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Steven Barry Machtinger, MD

Allergy/Immunology · San Francisco

NPI 1093719437

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
15
4 carriers
Offices
2

Offices

2 locations · Regents of the University of California - UCSF · Steven Machtinger MD and Associates Inc

Looking this up.

Hospitals listed: Mills-Peninsula Medical Center. That is not proof they admit you there this week.

Plans that list them

15 plans · 4 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Machtinger’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

15 of 15 plans

Plans whose provider directory lists this clinician
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026
Anthem Full Dual Advantage Aligned (HMO D-SNP)Anthem Blue CrossListedOct 3, 2026
Anthem Medicare Advantage (HMO-POS)Anthem Blue CrossListedOct 3, 2026
Anthem Prime (HMO-POS)Anthem Blue Cross Partnership PlanListedOct 3, 2026
Imperial Courage Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Dynamic Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Senior Value (HMO C-SNP)Imperial Health Plan of California, Inc.ListedSep 1, 2026

California Medical Board record

Licence G42041 · Current

Licensed to practise in California · since 1980 · expires 2028-03-31 · University of Pittsburgh School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Hospitals they work in

1 hospital

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

  • Peninsula Medical CenterBurlingame, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 4 of 5 · 78% would definitely recommend it
    Overall rating: 5 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.139, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.242, Oct 2024 – Sep 2025
See every measure and the patient survey for Peninsula Medical Center

Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 0 worse of 7 measures. Readmissions: 0 better, 10 the same, 1 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Peninsula Medical Center
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.139BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.242BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.21 (0.27 to 2.15) · 1,258 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.81 (0.51 to 1.1)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths155.44 (112.67 to 198.21) · 90 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths2.5 · 32 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.1 · 82 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10 · 188 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths9 · 473 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths14.8 · 342 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.4 · 485 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.9 · 3,730 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.2 (0 to 0.4) · 6,904 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.21 (0.02 to 0.4) · 7,052 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.41 (1.43 to 5.39) · 1,695 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.72 (0.17 to 3.28) · 665 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.11 (0.66 to 3.56) · 1,545 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.1 (1.3 to 12.9) · 670 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.96 (2.63 to 9.29) · 653 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.61 (0.15 to 3.08) · 418 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.14 (0 to 0.78) · 5,539 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.7 · 192 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.215No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.263No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.74No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits14.3 · 300 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits19 · 702 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits1.2 · 207 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-13.6 · 531 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits24.3 · 343 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits18.1 · 449 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits4.5 (2.8 to 7) · 85 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits9.6 (6.7 to 13.7) · 85 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.7 · 189 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits11 · 45 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20.6 · 117 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13 (9.7 to 17.2) · 584 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.9 (0.7 to 1.2) · 764 casesNo differentJan 2024 – Dec 2024

What patients said (523 patients answered, 27% of those asked)

Patient survey stars by topic at Peninsula Medical Center
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness3
Recommend hospital5
Share of patients giving the best answer at Peninsula Medical Center
Room was "always" clean76%
Nurses "always" communicated well81%
Doctors "always" communicated well80%
Staff "always" explained58%
Yes, staff "did" give patients this information89%
Yes, staff "did" give patients information about help after discharge87%
Doctors "always" explained things so they could understand74%
Doctors "always" listened carefully79%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)75%
Staff "always" explained new medications72%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect88%
"Always" quiet at night54%
"YES", patients would definitely recommend the hospital78%
Staff "always" explained possible side effects44%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$168,444

Medicare paid this office $168,444 for 118 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Professional service for preparation and provision of 1 or more antigens28$8,896$15
Short return visit (20+ min)58$6,376$75
Return visit (30+ min)39$6,225$106
New patient visit (45+ min)30$4,487$150
Test for allergy using allergenic extract13$2,982$3
See all 10 services
Every Original Medicare service billed
Professional service for preparation and provision of 1 or more antigens28$8,896$15
Short return visit (20+ min)58$6,376$75
Return visit (30+ min)39$6,225$106
New patient visit (45+ min)30$4,487$150
Test for allergy using allergenic extract13$2,982$3
Professional service for multiple injections of allergen17$2,602$13
Injection of drug or substance under skin or into muscle13$2,564$13
Professional service for single injection of allergen18$2,119$10
Test to measure expiratory airflow and volume47$1,642$26
Test to measure the level of nitric oxide gas41$1,109$18

Who their Medicare patients are

118 Original Medicare patients in 2024. Average age 75 · Women 63% · Health risk score 0.80. At or below the middle of the specialty; the typical allergy/ immunology clinician is at 1.

Conditions among them: High blood pressure 58% · Cancer 17% · COPD 17% · Depression 17% · Coronary heart disease 16% · Atrial fibrillation 16% · Diabetes 15% · Chronic kidney disease 11% · Heart failure 9%.

The office billed $396,303, Medicare allowed $217,188 and paid $168,444; for 6,736 services of 22 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare by year
20241186,736750.80$396,303$168,444
20231095,576740.76$298,395$131,233
20221054,043730.70$196,268$84,170
2021903,956740.83$176,257$88,528
2020913,663740.80$180,154$94,567
2019965,111730.77$219,043$110,871
2018934,451730.84$172,862$89,414
2017914,193720.83$170,411$87,334
2016953,236720.75$131,953$62,801
20151052,128720.78$89,783$36,878
2014741,432740.85$68,356$27,556
2013862,162730.91$72,072$33,356

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

See the services billed each year

2023: 10 services

Original Medicare services billed in 2023
Professional service for preparation and provision of 1 or more antigens25$8,637$14
Short return visit (20+ min)62$8,187$74
New patient visit (45+ min)35$4,945$141
Test for allergy using allergenic extract16$3,665$4
Return visit (30+ min)26$3,332$115
Professional service for multiple injections of allergen16$2,460$12
Professional service for single injection of allergen19$2,163$10
Injection of drug or substance under skin or into muscle11$1,880$12
Test to measure expiratory airflow and volume35$1,313$25
Test to measure the level of nitric oxide gas33$799$16

2022: 9 services

Original Medicare services billed in 2022
Professional service for preparation and provision of 1 or more antigens25$9,074$16
Short return visit (20+ min)55$6,574$76
New patient visit (45+ min)30$3,903$130
Test for allergy using allergenic extract12$3,237$4
Return visit (30+ min)22$2,761$95
Professional service for multiple injections of allergen17$2,479$10
Professional service for single injection of allergen16$1,698$8
Test to measure expiratory airflow and volume28$975$25
Test to measure the level of nitric oxide gas29$768$19

2021: 9 services

Original Medicare services billed in 2021
Professional service for preparation and provision of 1 or more antigens21$9,367$16
Short return visit (20+ min)42$5,151$77
New patient visit (45+ min)26$3,533$136
Test for allergy using allergenic extract12$3,080$4
Return visit (30+ min)18$2,624$105
Professional service for multiple injections of allergen17$2,460$11
Professional service for single injection of allergen14$1,066$8
Test to measure expiratory airflow and volume23$846$30
Test to measure the level of nitric oxide gas18$383$21

2020: 6 services

Original Medicare services billed in 2020
Professional service for preparation and provision of 1 or more antigens29$8,161$14
Short return visit (20+ min)40$3,534$54
New patient visit (45+ min)23$3,234$141
Return visit (30+ min)19$1,788$85
Professional service for multiple injections of allergen18$1,707$10
Professional service for single injection of allergen16$1,247$8

2019: 8 services

Original Medicare services billed in 2019
Professional service for preparation and provision of 1 or more antigens30$10,761$14
Short return visit (20+ min)61$7,449$63
Test for allergy using allergenic extract12$3,268$4
New patient visit (45+ min)23$3,162$137
Professional service for multiple injections of allergen21$2,867$11
Professional service for single injection of allergen21$2,488$8
Test to measure expiratory airflow and volume32$1,679$34
Test to measure the level of nitric oxide gas15$379$20

2018: 9 services

Original Medicare services billed in 2018
Professional service for preparation and provision of 1 or more antigens28$8,405$11
Short return visit (20+ min)60$5,919$54
Test for allergy using allergenic extract13$3,546$5
New patient visit (45+ min)20$2,564$128
Professional service for single injection of allergen16$1,963$8
Test to measure expiratory airflow and volume36$1,743$31
Professional service for multiple injections of allergen16$1,683$9
Return visit (30+ min)11$1,269$85
Test to measure the level of nitric oxide gas15$421$17

2017: 8 services

Original Medicare services billed in 2017
Professional service for preparation and provision of 1 or more antigens28$7,881$12
Short return visit (20+ min)62$6,760$59
New patient visit (45+ min)22$2,738$124
Professional service for multiple injections of allergen20$2,513$10
Return visit (30+ min)15$2,021$75
Test to measure expiratory airflow and volume34$1,837$31
Professional service for single injection of allergen16$1,719$8
Test to measure the level of nitric oxide gas16$453$19

2016: 7 services

Original Medicare services billed in 2016
Short return visit (20+ min)54$7,392$63
Professional service for preparation and provision of 1 or more antigens28$7,335$12
Return visit (30+ min)27$4,474$88
New patient visit (45+ min)19$2,404$127
Professional service for multiple injections of allergen16$1,826$10
Test to measure expiratory airflow and volume33$1,740$35
Professional service for single injection of allergen13$1,229$8

2015: 8 services

Original Medicare services billed in 2015
Short return visit (20+ min)61$6,034$61
Test for allergy using allergenic extract16$5,148$6
New patient visit (45+ min)36$4,840$134
Professional service for preparation and provision of 1 or more antigens25$4,605$11
Return visit (30+ min)27$3,796$93
Professional service for multiple injections of allergen18$2,358$9
Professional service for single injection of allergen11$1,935$9
Test to measure expiratory airflow and volume24$1,105$33

2014: 7 services

Original Medicare services billed in 2014
Return visit (30+ min)25$6,037$93
Short return visit (20+ min)40$4,217$64
Professional service for preparation and provision of 1 or more antigens24$4,178$12
New patient visit (45+ min)23$3,400$148
Professional service for multiple injections of allergen21$2,611$10
Professional service for single injection of allergen14$1,385$8
Test to measure expiratory airflow and volume13$589$35

2013: 8 services

Original Medicare services billed in 2013
Test for allergy using allergenic extract16$7,142$7
Professional service for preparation and provision of 1 or more antigens25$6,489$13
Return visit (30+ min)25$5,040$99
Short return visit (20+ min)52$4,588$60
New patient visit (45+ min)26$3,788$146
Professional service for multiple injections of allergen23$2,979$10
Professional service for single injection of allergen15$1,407$9
Test to measure expiratory airflow and volume16$610$36

Drugs they prescribed that Part D paid

$357,569

Pharmacies billed $357,569 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

Opioids were 0% of their Part D prescriptions (0 of 404) in 2024. At or below the middle of the specialty; the typical allergy/ immunology clinician is at 0%.

179 generic and 225 brand-name prescriptions · $357,569 in drug cost · 29 antibiotic prescriptions to 18 people.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Largest Part D drug costs
Nucala17$120,983$7,117
Dupixent11$42,053$3,823
Trelegy Ellipta25$21,951$878
Breo Ellipta20$17,502$875
Arnuity Ellipta16$12,813$801
See all 15 drugs
Every Part D drug this clinician prescribed
Nucala17$120,983$7,117
Dupixent11$42,053$3,823
Trelegy Ellipta25$21,951$878
Breo Ellipta20$17,502$875
Arnuity Ellipta16$12,813$801
Spiriva Respimat17$12,799$753
Epinephrine30$6,261$209
Symbicort18$5,887$327
Advair Hfa15$5,836$389
Breyna12$1,816$151
Ipratropium24$667$28
Albuterol Sulfate Hfa21$554$26
Montelukast21$174$8
Prednisone14$78$6
Azithromycin13$74$6

Year by year

Part D prescribing by year
2024404970% (0)56%$357,569
20234631040% (0)57%$404,219
2022481980% (0)57%$366,661
2021433780% (0)55%$221,374
2020514870% (0)54%$205,867
2019417810% (0)48%$134,337
2018468740% (0)54%$155,057
2017486740% (0)53%$159,747
2016532680% (0)52%$132,242
2015353690% (0)48%$100,926
2014303520% (0)49%$60,711
2013323540% (0)58%$52,929

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 16 drugs

Part D drugs prescribed in 2023
Nucala42$143,546$3,418
Dupixent28$99,772$3,563
Trelegy Ellipta27$25,143$931
Breo Ellipta27$17,396$644
Spiriva Respimat19$14,178$746
Symbicort25$13,800$552
Advair Hfa16$6,883$430
Epinephrine20$5,464$273
Wixela Inhub12$5,040$420
Ipratropium21$1,179$56
Montelukast33$735$22
Albuterol Sulfate Hfa20$671$34
Flunisolide12$602$50
Fluticasone Propionate11$390$35
Amoxicillin-Clavulanate Potass11$209$19
Azithromycin12$71$6

2022: 14 drugs

Part D drugs prescribed in 2022
Dupixent42$141,221$3,362
Nucala15$57,485$3,832
Trelegy Ellipta33$28,075$851
Symbicort34$15,822$465
Breo Ellipta29$12,635$436
Spiriva Respimat16$11,106$694
Wixela Inhub24$8,708$363
Advair Hfa17$6,871$404
Epinephrine18$4,680$260
Albuterol Sulfate Hfa22$1,020$46
Ipratropium21$839$40
Flunisolide13$666$51
Montelukast33$581$18
Fluticasone Propionate11$325$30

2021: 12 drugs

Part D drugs prescribed in 2021
Dupixent19$61,380$3,231
Nucala14$44,431$3,174
Symbicort26$19,022$732
Breo Ellipta40$15,493$387
Wixela Inhub20$6,862$343
Advair Hfa16$5,435$340
Epinephrine20$4,879$244
Azelastine23$1,418$62
Ipratropium14$1,146$82
Albuterol Sulfate Hfa22$1,038$47
Montelukast44$870$20
Flunisolide12$604$50

2020: 14 drugs

Part D drugs prescribed in 2020
Xolair27$54,937$2,035
Nucala12$36,882$3,074
Breo Ellipta47$19,276$410
Symbicort20$14,884$744
Wixela Inhub25$7,028$281
Advair Diskus15$6,932$462
Advair Hfa12$4,588$382
Dymista19$3,749$197
Ipratropium27$1,927$71
Azelastine24$1,511$63
Albuterol Sulfate Hfa30$1,243$41
Montelukast57$1,146$20
Flunisolide12$582$48
Triamcinolone Acetonide12$308$26

2019: 14 drugs

Part D drugs prescribed in 2019
Xolair14$31,727$2,266
Spiriva Respimat20$12,161$608
Symbicort17$11,002$647
Breo Ellipta21$7,411$353
Advair Diskus17$4,577$269
Wixela Inhub13$4,413$339
Advair Hfa12$3,741$312
Dymista14$2,552$182
Ipratropium33$2,019$61
Azelastine31$1,632$53
Ventolin Hfa13$759$58
Montelukast56$719$13
Triamcinolone Acetonide15$302$20
Valacyclovir14$196$14

2018: 17 drugs

Part D drugs prescribed in 2018
Xolair11$24,373$2,216
Advair Diskus30$16,595$553
Symbicort31$11,661$376
Spiriva Respimat15$9,766$651
Spiriva17$6,846$403
Breo Ellipta19$6,391$336
Advair Hfa15$4,957$330
Alvesco14$4,842$346
Olopatadine11$2,923$266
Theo-2411$2,468$224
Arnuity Ellipta13$2,201$169
Azelastine20$1,620$81
Ipratropium21$1,427$68
Ventolin Hfa23$1,273$55
Montelukast64$858$13
Fluticasone Propionate16$336$21
Prednisone11$43$4

2017: 15 drugs

Part D drugs prescribed in 2017
Xolair13$35,978$2,768
Advair Diskus31$12,618$407
Symbicort29$11,868$409
Spiriva Respimat14$8,031$574
Alvesco20$7,045$352
Spiriva18$6,765$376
Advair Hfa15$6,091$406
Olopatadine15$3,451$230
Theo-2412$2,341$195
Qnasl12$2,315$193
Azelastine26$1,860$72
Arnuity Ellipta11$1,754$159
Ventolin Hfa20$1,076$54
Montelukast68$845$12
Fluticasone Propionate28$357$13

2016: 18 drugs

Part D drugs prescribed in 2016
Xolair11$42,498$3,863
Spiriva33$13,079$396
Advair Diskus22$9,407$428
Symbicort25$7,588$304
Alvesco21$6,181$294
Breo Ellipta15$5,572$371
Spiriva Respimat13$4,786$368
Advair Hfa11$4,358$396
Olopatadine12$2,681$223
Arnuity Ellipta15$2,278$152
Theo-2412$2,147$179
Azelastine27$2,049$76
Montelukast75$1,135$15
Ventolin Hfa19$996$52
Fluticasone Propionate38$456$12
Ipratropium12$347$29
Levocetirizine Dihydrochloride12$49$4
Prednisone11$41$4

2015: 14 drugs

Part D drugs prescribed in 2015
Xolair17$51,909$3,053
Spiriva14$6,165$440
Advair Diskus13$5,156$397
Breo Ellipta13$3,672$282
Symbicort12$2,902$242
Olopatadine13$2,678$206
Pataday14$2,130$152
Azelastine23$1,916$83
Proair Hfa16$819$51
Triamcinolone Acetonide15$753$50
Montelukast61$688$11
Flunisolide13$337$26
Fluticasone Propionate24$314$13
Ipratropium11$254$23

2014: 9 drugs

Part D drugs prescribed in 2014
Xolair12$19,823$1,652
Spiriva18$8,569$476
Advair Diskus12$4,607$384
Nasonex16$2,680$168
Azelastine16$868$54
Montelukast55$662$12
Flunisolide14$538$38
Fluticasone Propionate32$513$16
Ipratropium11$231$21

2013: 9 drugs

Part D drugs prescribed in 2013
Spiriva24$8,604$358
Advair Diskus13$4,487$345
Symbicort19$4,356$229
Combivent Respimat11$3,179$289
Alvesco18$3,160$176
Nasonex12$1,687$141
Fluticasone Propionate33$1,234$37
Montelukast48$1,011$21
Pantoprazole12$146$12

Money from drug and device companies

$535 in 2025

Industry payments by year
2025919None$535
202478$175$529
202368None$470
202267None$320
202179None$448
2020411$4,630$5,012
201969$3,795$4,725

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
GlaxoSmithKlineNucala$189
8 payments
  • Meals for Nucala · 2025-08-12 · $7
  • Meals for Nucala · 2025-05-27 · $7
  • Meals for Nucala · 2025-04-16 · $100
  • Meals for Nucala · 2025-03-26 · $13
  • Meals for Nucala · 2025-03-13 · $9
  • Meals for Nucala · 2025-03-04 · $10
  • Meals for Nucala · 2025-02-18 · $13
  • Meals for Nucala · 2025-01-28 · $30
GenzymeAyvakit$63
2 payments
  • Meals for Ayvakit · 2025-09-17 · $41
  • Meals for Dupixent · 2025-03-26 · $22
ARS Pharmaceuticals OperationsNeffy$55
2 payments
  • Meals for Neffy · 2025-10-29 · $28
  • Meals for Neffy · 2025-04-18 · $28
Sanofi-Aventis U.S.Dupixent$55
1 payment
  • Education for Dupixent · 2025-05-08 · $55
Novartis PharmaceuticalsRhapsido$51
2 payments
  • Meals for Rhapsido · 2025-10-14 · $24
  • Meals · 2025-07-10 · $27
Optinose USXhance$35
1 payment
  • Meals for Xhance · 2025-02-27 · $35
See all 19 published payments
Every published payment
LEO PharmaMeals · 2025-12-17Anzupgo$27
InsmedMeals · 2025-11-12Brinsupri$30
ARS Pharmaceuticals OperationsMeals · 2025-10-29Neffy$28
Novartis PharmaceuticalsMeals · 2025-10-14Rhapsido$24
GenzymeMeals · 2025-09-17Ayvakit$41
GlaxoSmithKlineMeals · 2025-08-12Nucala$7
Novartis PharmaceuticalsMeals · 2025-07-10None$27
GlaxoSmithKlineMeals · 2025-05-27Nucala$7
Sanofi-Aventis U.S.Education · 2025-05-08Dupixent$55
ARS Pharmaceuticals OperationsMeals · 2025-04-18Neffy$28
GlaxoSmithKlineMeals · 2025-04-16Nucala$100
Lilly USAMeals · 2025-04-02Ebglyss$31
GlaxoSmithKlineMeals · 2025-03-26Nucala$13
GenzymeMeals · 2025-03-26Dupixent$22
GlaxoSmithKlineMeals · 2025-03-13Nucala$9
GlaxoSmithKlineMeals · 2025-03-04Nucala$10
Optinose USMeals · 2025-02-27Xhance$35
GlaxoSmithKlineMeals · 2025-02-18Nucala$13
GlaxoSmithKlineMeals · 2025-01-28Nucala$30
See earlier years (2024, 2023, 2022, 2021, 2020, 2019)

2024: $529

Payments by company in 2024
Aimmune TherapeuticsPalforzia$175
1 payment
  • Honoraria for Palforzia · 2024-02-07 · $175
Regeneron Healthcare SolutionsNone$122
1 payment
  • Meals · 2024-05-08 · $122
GenzymeDupixent$117
1 payment
  • Meals for Dupixent · 2024-07-10 · $117
AstraZeneca Pharmaceuticals LPFasenra$50
2 payments
  • Meals for Tezspire · 2024-12-05 · $20
  • Meals for Fasenra · 2024-07-29 · $29
Dermavant SciencesVtama$26
1 payment
  • Meals for Vtama · 2024-04-18 · $26
Greer LaboratoriesPalforzia$22
1 payment
  • Meals for Palforzia · 2024-12-05 · $22
BioCryst US Sales Co.Orladeyo$18
1 payment
  • Meals for Orladeyo · 2024-02-08 · $18

2023: $470

Payments by company in 2023
GenzymeDupixent$224
2 payments
  • Meals for Dupixent · 2023-05-16 · $99
  • Meals for Dupixent · 2023-05-04 · $125
BioCryst US Sales Co.Orladeyo$137
1 payment
  • Meals for Orladeyo · 2023-04-29 · $137
PfizerCibinqo$36
2 payments
  • Meals for Cibinqo · 2023-03-30 · $21
  • Education for Cibinqo · 2023-03-29 · $15
LEO PharmaAdbry$30
1 payment
  • Meals for Adbry · 2023-03-06 · $30
Dermavant SciencesVtama$22
1 payment
  • Meals for Vtama · 2023-06-07 · $22
AstraZeneca Pharmaceuticals LPTezspire$21
1 payment
  • Meals for Tezspire · 2023-03-02 · $21

2022: $320

Payments by company in 2022
BioCryst US Sales Co.Orladeyo$140
1 payment
  • Meals for Orladeyo · 2022-05-21 · $140
PfizerCibinqo$59
2 payments
  • Meals for Cibinqo · 2022-11-03 · $31
  • Meals for Cibinqo · 2022-05-05 · $28
Regeneron Healthcare SolutionsDupixent$40
1 payment
  • Meals for Dupixent · 2022-11-07 · $40
kaleoAuvi-Q$35
1 payment
  • Meals for Auvi-Q · 2022-05-25 · $35
Aimmune TherapeuticsPalforzia$30
1 payment
  • Meals for Palforzia · 2022-04-12 · $30
Genentech USAXolair$16
1 payment
  • Meals for Xolair · 2022-08-24 · $16

2021: $448

Payments by company in 2021
BioCryst US Sales Co.Orladeyo$165
2 payments
  • Meals for Orladeyo · 2021-09-11 · $17
  • Meals for Orladeyo · 2021-09-11 · $148
Genentech USAXolair$150
1 payment
  • Meals for Xolair · 2021-09-11 · $150
kaleoAuvi-Q$46
2 payments
  • Meals for Auvi-Q · 2021-06-22 · $16
  • Meals for Auvi-Q · 2021-01-13 · $30
GlaxoSmithKlineTrelegy Ellipta$26
1 payment
  • Meals for Trelegy Ellipta · 2021-03-03 · $26
Optinose USXhance$25
1 payment
  • Meals for Xhance · 2021-08-09 · $25
Boehringer Ingelheim PharmaceuticalsSpiriva Respimat$24
1 payment
  • Meals for Spiriva Respimat · 2021-08-16 · $24
Horizon Therapeutics plcActimmune$13
1 payment
  • Education for Actimmune · 2021-03-26 · $13

2020: $5,012

Payments by company in 2020
Boehringer Ingelheim PharmaceuticalsNone$2,880
4 payments
  • Paid to speak or teach · 2020-12-17 · $720
  • Paid to speak or teach · 2020-09-08 · $1,200
  • Consulting · 2020-07-10 · $240
  • Paid to speak or teach · 2020-06-12 · $720
OptiNose USXhance$2,057
4 payments
  • Meals for Xhance · 2020-02-28 · $126
  • Meals for Xhance · 2020-02-05 · $117
  • Consulting for Xhance · 2020-02-02 · $1,750
  • Meals for Xhance · 2020-02-02 · $63
Horizon Therapeutics plcActimmune$48
2 payments
  • Meals for Actimmune · 2020-12-02 · $25
  • Meals for Actimmune · 2020-08-17 · $23
kaleoAuvi-Q$27
1 payment
  • Meals for Auvi-Q · 2020-10-08 · $27

2019: $4,725

Payments by company in 2019
Genentech USAXolair$4,012
3 payments
  • Meals for Xolair · 2019-10-26 · $198
  • Travel for Xolair · 2019-10-25 · $20
  • Consulting for Xolair · 2019-10-25 · $3,795
ALK-AbelloOdactra$276
2 payments
  • Meals for Odactra · 2019-02-23 · $117
  • Meals for Odactra · 2019-01-22 · $159
OptiNose USXhance$120
1 payment
  • Meals for Xhance · 2019-02-28 · $120
Regeneron Healthcare SolutionsDupixent$114
1 payment
  • Meals for Dupixent · 2019-11-21 · $114
Teva Pharmaceuticals USACinqair$106
1 payment
  • Meals for Cinqair · 2019-04-20 · $106
Circassia PharmaceuticalsNiox Vero$97
1 payment
  • Meals for Niox Vero · 2019-02-24 · $97

Professional record

NPI
1093719437
Licence
CA G42041California G42041: Current · expires 2028-03-31
Trained
University of Pittsburgh School of Medicine, 1977
Group
Regents of the University of California - UCSF · Steven Machtinger MD and Associates Inc
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 2080P0201X (2080P0201X); Federal specialty code 207K00000X (207K00000X); Pediatrics (208000000X)
Mailing address
725 Welch Rd, Palo Alto, CA, 94304
NPI first listed
2005-06-13
NPI last updated
2025-12-12
NPI record certified
2025-12-12

This is when the NPI record was last certified, not a medical board exam.

Extra NPI addresses: 725 Welch Rd, Palo Alto, CA, 94304 · 100 South Ellsworth Avenue Suite 707, San Mateo, CA, 94401