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Marlene Martin, MD

Internal Medicine · San Francisco

NPI 1831465152

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
9
1 carrier
Office
1
Since medical school
14 years
Stanford University School of Medicine, 2012

Offices

1 location · University of California Sfgh Medical Group · 566 clinicians in this group

Looking this up.

Hospitals listed: Zuckerberg San Francisco General Hosp & Trauma Ctr. That is not proof they admit you there this week.

Plans that list them

9 plans · 1 carrier

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

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

California Medical Board record

Licence A128191 · Current

Licensed to practise in California · since 2013 · expires 2027-12-31 · Stanford University School of Medicine.

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

School, training and certification

What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.

Specialty certification

  • American Board of Internal Medicine - Internal Medicine
  • American Board of Preventive Medicine - Addiction Medicine

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
91.9 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

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.

  • Zuckerberg San Francisco General Hosp & Trauma CtrSan Francisco, CAAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of San Francisco Health Network, which runs 2 hospitalsPatients rate it 3 of 5 · 72% would definitely recommend it
    Overall rating: 2 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.449, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.37, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.538, Oct 2024 – Sep 2025
See every measure and the patient survey for Zuckerberg San Francisco General Hosp & Trauma Ctr

Behind the star rating — Deaths: 1 better, 6 the same, 0 worse of 7 measures. Safety: 1 better, 5 the same, 1 worse of 7 measures. Readmissions: 0 better, 7 the same, 2 worse of 9 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Zuckerberg San Francisco General Hosp & Trauma Ctr
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.449BetterOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.37BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.538BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths0.9 (0 to 1.91) · 667 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.12 (0.76 to 1.49)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths195.34 (147.34 to 243.34) · 76 casesNo differentJul 2022 – Jun 2024
Death rate for COPD patientsComplications and deaths7.2 · 114 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths12.2 · 48 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths7.5 · 201 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths14.5 · 214 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths10.3 · 261 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.5 · 1,351 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.29 (0.07 to 0.5) · 4,709 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.39 (0.19 to 0.59) · 4,644 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.34 (2.11 to 6.56) · 795 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.59 (0 to 3.28) · 234 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.85 (1.33 to 4.38) · 861 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths8.95 (0.25 to 17.64) · 261 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths6 (2.01 to 9.98) · 242 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.66 (0.17 to 3.14) · 167 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.79 (0.08 to 1.49) · 4,129 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4.4 · 35 casesNoneApr 2023 – Mar 2025
MRSA BacteremiaInfections0.709No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.769No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits14.7 · 41 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits22.1 · 227 casesNoneJul 2023 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits28.6 · 257 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits75.1 · 239 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits18.2 · 232 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits6.8 (4.7 to 9.6) · 175 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits11.3 (8.3 to 15.1) · 175 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6.1 · 37 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20.2 · 132 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.6 (10.4 to 17.9) · 966 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1.2 (0.8 to 1.7) · 88 casesNo differentJan 2024 – Dec 2024

What patients said (1,644 patients answered, 16% of those asked)

Patient survey stars by topic at Zuckerberg San Francisco General Hosp & Trauma Ctr
Cleanliness4
Nurse communication2
Doctor communication3
Communication about medicines2
Discharge information3
Overall hospital rating4
Quietness3
Recommend hospital4
Share of patients giving the best answer at Zuckerberg San Francisco General Hosp & Trauma Ctr
Room was "always" clean69%
Nurses "always" communicated well73%
Doctors "always" communicated well75%
Staff "always" explained56%
Yes, staff "did" give patients this information84%
Yes, staff "did" give patients information about help after discharge83%
Doctors "always" explained things so they could understand68%
Doctors "always" listened carefully75%
Doctors "always" treated them with courtesy and respect82%
Patients who gave a rating of "9" or "10" (high)72%
Staff "always" explained new medications67%
Nurses "always" explained things so they could understand68%
Nurses "always" listened carefully70%
Nurses "always" treated them with courtesy and respect80%
"Always" quiet at night55%
"YES", patients would definitely recommend the hospital72%
Staff "always" explained possible side effects44%
Yes, staff "did" give patients information about possible symptoms84%

Original Medicare doctor bills

$12,748

Medicare paid this office $12,748 for 42 people.

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

Largest Original Medicare bills
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes19$5,078$104
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes14$2,994$68
Initial hospital care with moderate level of medical decision making at least 75 minutes14$2,134$152
Hospital discharge day management, more than 30 minutes14$1,567$104

Who their Medicare patients are

42 Original Medicare patients in 2024. Average age 69 · Women 36% · Health risk score 3.49. Sicker patients than 9 in 10 peers; the typical internal medicine clinician is at 1.76.

Conditions among them: High blood pressure 75% · Diabetes 45% · Heart failure 45% · Chronic kidney disease 43% · COPD 40% · Coronary heart disease 31% · Depression 29%.

The office billed $68,899, Medicare allowed $16,256 and paid $12,748; for 134 services of 8 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
202442134693.49$68,899$12,748
202357163673.00$80,590$15,240
202237112683.09$52,434$9,883
202156118692.60$52,211$9,981
202067209702.77$91,905$18,424
201944114673.46$46,943$9,211
2018121431702.71$167,346$31,741
2017109255713.15$123,622$21,792
2016124376712.90$188,340$35,279

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: 4 services

Original Medicare services billed in 2023
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes21$5,823$108
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes24$3,517$72
Hospital discharge day management, more than 30 minutes19$2,001$105
Initial hospital care with moderate level of medical decision making at least 75 minutes12$1,884$157

2022: 3 services

Original Medicare services billed in 2022
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes18$4,120$88
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes16$1,761$63
Hospital discharge day management, more than 30 minutes13$1,226$94

2021: 3 services

Original Medicare services billed in 2021
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes21$3,509$92
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes21$2,535$60
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes16$2,182$121

2020: 4 services

Original Medicare services billed in 2020
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes29$5,769$95
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes24$5,124$66
Initial hospital care with moderate level of medical decision making at least 75 minutes17$3,287$183
Hospital discharge day management, more than 30 minutes22$2,106$96

2019: 2 services

Original Medicare services billed in 2019
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes26$3,348$64
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes11$554$35

2018: 7 services

Original Medicare services billed in 2018
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes77$15,037$63
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes29$4,903$89
Initial hospital care with moderate level of medical decision making at least 75 minutes22$3,804$173
Hospital discharge day management, 30 minutes or less38$2,325$61
Hospital discharge day management, more than 30 minutes23$2,200$96
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes18$2,134$119
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes11$1,085$34

2017: 6 services

Original Medicare services billed in 2017
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes31$5,924$90
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes52$5,686$62
Initial hospital care with moderate level of medical decision making at least 75 minutes20$3,373$169
Hospital discharge day management, more than 30 minutes28$2,533$90
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes17$1,946$114
Hospital discharge day management, 30 minutes or less12$762$63

2016: 6 services

Original Medicare services billed in 2016
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes47$11,446$92
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes37$5,079$64
Initial hospital care with moderate level of medical decision making at least 75 minutes27$4,737$175
Hospital discharge day management, more than 30 minutes44$4,376$97
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes35$4,131$118
Hospital observation care on day of discharge22$1,515$66

Medicaid work

$7,157 in 2024

Medicaid paid $7,157 for 110 billed services this clinician did in 2024, up to 14 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

Largest Medicaid services in 2024
Clinic visit/encounter, all-inclusive15$5,340
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES81$1,817
Service14$0
Medicaid work by year
2024110314$7,157
2023100315$2,805
202049215$1,265
201944113$891
201839212$906
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES44$1,329
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES40$1,319
Education and training for patient self-management by a nonphysician qualified health care professional using a standardized curriculum, face-to-face with the patient (could include caregiver/family) each 30 minutes; individual patient16$157

2020

Largest Medicaid services in 2020
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES35$875
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter14$390

2019

Largest Medicaid services in 2019
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES44$891

2018

Largest Medicaid services in 2018
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES26$765
Hospital inpatient or observation discharge day management; 30 minutes or less on the date of the encounter13$141

Drugs they prescribed that Part D paid

$3,406

Pharmacies billed $3,406 in 2024.

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

38 generic and fewer than 11 brand-name prescriptions · $3,406 in drug cost.

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.

Year by year

Part D prescribing by year
20244818NoneNone$3,406
20237827NoneNone$36,166
20224811NoneNone$1,536
20204418NoneNone$4,396
201934NoneNoneNone$5,953
201844120% (0)None$2,811
201729251NoneNone$27,622
201638188NoneNone$26,836
201525853NoneNone$27,930
201464200% (0)None$1,821

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

See the drugs prescribed each year

2017: 8 drugs

Part D drugs prescribed in 2017
Xarelto17$8,884$523
Metoprolol12$684$57
Atorvastatin27$522$19
Isosorbide Mononitrate Er11$297$27
Amlodipine Besylate24$241$10
Furosemide14$134$10
Gabapentin15$118$8
Hydrochlorothiazide11$21$2

2016: 8 drugs

Part D drugs prescribed in 2016
Atorvastatin22$383$17
Gabapentin16$317$20
Isosorbide Mononitrate Er16$240$15
Carvedilol26$144$6
Amlodipine Besylate12$132$11
Pantoprazole15$116$8
Furosemide19$89$5
Lisinopril14$76$5

2015: 4 drugs

Part D drugs prescribed in 2015
Atorvastatin20$515$26
Metoprolol12$469$39
Lisinopril13$98$8
Propranolol11$50$5

Money from drug and device companies

$74 in 2021

A payment is not proof that care is biased.

Payments by company
AstraZeneca Pharmaceuticals LPNone$74
1 payment
  • Meals · 2021-08-20 · $74
See the published payment
Every published payment
AstraZeneca Pharmaceuticals LPMeals · 2021-08-20None$74

Professional record

NPI
1831465152
Licence
CA A128191California A128191: Current · expires 2027-12-31
Trained
Stanford University School of Medicine, 2012 · 14 years ago
Gender
Female
More record details
Sole proprietor
Yes
Taxonomy
Internal medicine (207R00000X); Federal specialty code 207RA0401X (207RA0401X)
Mailing address
1001 Potrero Ave Bldg 25, San Francisco, CA, 94110
NPI first listed
2012-03-30
NPI last updated
2026-04-30
NPI record certified
2026-04-30

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

Extra NPI addresses: 751 S Bascom Ave, San Jose, CA, 95128