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Michelle S Zandian, PA

Physician Assistant · Stanford

NPI 1225226475

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Office
1
Since medical school
23 years
Graduated 2003

Offices

1 location · Stanford Health Care · 3,152 clinicians in this group

Looking this up.

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Michelle S Zandian’s office at (650) 723-4000 to ask if they take your plan before you enroll.

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.

  • Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend it
    Overall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for Stanford Health Care

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 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 Stanford Health Care
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths5.31 (4.24 to 6.37) · 8,661 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits14.1 (12.7 to 15.7) · 2,191 casesWorseJan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths4.08 (1.95 to 6.21) · 5,296 casesBetterJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.317BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.446BetterOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.241BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.7 (0.6 to 0.9) · 3,348 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.06 (0.45 to 1.67) · 5,374 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.86 (0.72 to 1)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths166.09 (137.88 to 194.3) · 470 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.1 · 192 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.4 · 146 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths9.7 · 253 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.3 · 880 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 935 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.7 · 501 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.1 · 7,730 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.13 (0 to 0.27) · 20,799 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.28 (0.14 to 0.43) · 23,182 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.94 (0.2 to 1.68) · 5,694 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.36 (1.54 to 3.19) · 7,846 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.2 (3.76 to 6.64) · 5,603 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.38 (0.23 to 2.53) · 2,211 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.52 (0.21 to 0.83) · 19,915 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.6 · 416 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.869No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.857No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.368No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16.2 · 247 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.5 · 1,021 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits47.8 · 258 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-1.6 · 990 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits20.8 · 976 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.5 · 959 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.2 (4.4 to 6.2) · 2,191 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.1 · 425 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.6 · 158 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.6 · 183 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.7 (10.4 to 15.4) · 4,578 casesNo differentJan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

Patient survey stars by topic at Stanford Health Care
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at Stanford Health Care
Room was "always" clean75%
Nurses "always" communicated well82%
Doctors "always" communicated well81%
Staff "always" explained63%
Yes, staff "did" give patients this information89%
Yes, staff "did" give patients information about help after discharge89%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)79%
Staff "always" explained new medications76%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect88%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital83%
Staff "always" explained possible side effects50%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$6,184

Medicare paid this office $6,184 for 43 people. Most of that is long return visits and Botox.

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

Largest Original Medicare bills
Long return visit (40+ min)25$3,763$134
Long return visit (40+ min)11$1,444$111

Who their Medicare patients are

43 Original Medicare patients in 2024. Average age 66 · Women 33% · Also on Medicaid 74% · Health risk score 4.79. Sicker patients than 9 in 10 peers; the typical physician assistant clinician is at 1.31.

Conditions among them: High blood pressure 75% · Chronic kidney disease 60% · Diabetes 56% · Depression 30% · Coronary heart disease 28%.

The office billed $33,449, Medicare allowed $8,323 and paid $6,184; for 52 services of 4 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
20244352664.79$33,449$6,184
20234257675.39$32,505$5,386
20223946644.67$28,781$4,288
20211425653.91$18,240$2,189
20193853634.38$6,022$3,822
20186584654.46$12,319$6,813
20173849643.74$10,885$3,954
20161924613.35$6,820$1,773

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: 1 service

Original Medicare services billed in 2023
Long return visit (40+ min)32$4,541$106

2022: 2 services

Original Medicare services billed in 2022
Long return visit (40+ min)19$2,543$116
Return visit (30+ min)15$1,255$74

2019: 2 services

Original Medicare services billed in 2019
Long return visit (40+ min)26$2,688$81
Return visit (30+ min)13$976$61

2018: 1 service

Original Medicare services billed in 2018
Long return visit (40+ min)63$6,709$83

2017: 1 service

Original Medicare services billed in 2017
Long return visit (40+ min)36$3,895$83

2016: 1 service

Original Medicare services billed in 2016
Long return visit (40+ min)17$1,684$84

Drugs they prescribed that Part D paid

$217,756

Pharmacies billed $217,756 in 2024.

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

1,095 generic and fewer than 11 brand-name prescriptions · $217,756 in drug cost · 18 antibiotic prescriptions · 11 antipsychotic prescriptions to people over 65.

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
Vemlidy30$40,651$1,355
Cellcept30$21,948$732
Tacrolimus269$19,851$74
Baraclude15$19,018$1,268
Sirolimus34$13,379$394
See all 23 drugs
Every Part D drug this clinician prescribed
Vemlidy30$40,651$1,355
Cellcept30$21,948$732
Tacrolimus269$19,851$74
Baraclude15$19,018$1,268
Sirolimus34$13,379$394
Mycophenolate Mofetil103$12,830$125
Ursodiol63$8,029$127
Mycophenolic Acid14$7,395$528
Entecavir39$6,680$171
Prograf17$4,838$285
Cyclosporine Modified28$4,092$146
Tenofovir Disoproxil13$1,042$80
Gabapentin44$722$16
Pantoprazole138$524$4
Fludrocortisone Acetate37$506$14
Amlodipine Besylate51$182$4
Famotidine20$173$9
Omeprazole19$136$7
Mirtazapine17$101$6
Metoprolol22$55$3
Quetiapine11$42$4
Carvedilol14$32$2
Amoxicillin17$12$1

Year by year

Part D prescribing by year
20241,228115NoneNone$217,756
20231,187118NoneNone$275,615
20221,419130NoneNone$256,434
20211,584136None8%$263,354
20201,17996None11%$195,256
20191,095111None7%$149,427
20181,1081242% (21)8%$228,521
20179001232% (20)None$428,285
2016664972% (13)None$189,929
201536679None18%$108,700
201422140None87%$235,688
201317927None70%$106,250

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

See the drugs prescribed each year

2023: 26 drugs

Part D drugs prescribed in 2023
Vemlidy55$76,385$1,389
Tacrolimus216$32,367$150
Creon12$22,032$1,836
Sirolimus25$19,834$793
Lokelma20$17,562$878
Cellcept20$16,445$822
Entecavir49$13,660$279
Ursodiol45$7,737$172
Mycophenolic Acid16$6,891$431
Tenofovir Disoproxil24$5,265$219
Mycophenolate Mofetil82$4,899$60
Ramelteon13$4,242$326
Cyclosporine Modified25$3,579$143
Pantoprazole113$1,176$10
Omeprazole31$875$28
Tamsulosin32$831$26
Amlodipine Besylate67$654$10
Gabapentin25$549$22
Metoprolol23$329$14
Carvedilol22$195$9
Famotidine14$182$13
Mirtazapine18$176$10
Chlorthalidone11$145$13
Finasteride13$92$7
Furosemide13$57$4
Amoxicillin15$15$1

2022: 31 drugs

Part D drugs prescribed in 2022
Vemlidy73$94,818$1,299
Tacrolimus234$49,657$212
Entecavir80$16,839$210
Ursodiol60$13,763$229
Mycophenolate Mofetil90$10,389$115
Mycophenolic Acid25$7,761$310
Tenofovir Disoproxil18$1,387$77
Gabapentin38$1,073$28
Fludrocortisone Acetate29$970$33
Pantoprazole111$916$8
Omeprazole37$760$21
Amlodipine Besylate94$559$6
Ondansetron Odt13$538$41
Tamsulosin31$413$13
Famotidine20$322$16
Prednisone26$252$10
Finasteride23$247$11
Levothyroxine16$194$12
Mirtazapine16$180$11
Acyclovir11$177$16
Losartan22$166$8
Atorvastatin16$143$9
Levetiracetam11$123$11
Metoprolol30$105$4
Hydroxyzine17$104$6
Citalopram Hbr12$95$8
Carvedilol14$91$6
Benazepril12$62$5
Trazodone13$52$4
Escitalopram13$46$4
Amoxicillin23$25$1

2021: 31 drugs

Part D drugs prescribed in 2021
Vemlidy76$95,356$1,255
Tacrolimus289$41,028$142
Entecavir101$25,588$253
Viread11$14,567$1,324
Ursodiol47$10,950$233
Sirolimus12$8,230$686
Mycophenolate Mofetil99$7,704$78
Mycophenolic Acid11$7,391$672
Astagraf Xl11$5,180$471
Valganciclovir19$3,353$176
Tenofovir Disoproxil25$2,145$86
Cyclosporine Modified17$1,939$114
Pantoprazole144$1,414$10
Fludrocortisone Acetate55$1,118$20
Gabapentin43$1,090$25
Amlodipine Besylate133$1,002$8
Omeprazole32$515$16
Metoprolol20$375$19
Mirtazapine22$361$16
Famotidine18$360$20
Losartan33$228$7
Prednisone19$201$11
Carvedilol12$167$14
Metoprolol40$164$4
Atorvastatin21$155$7
Finasteride16$150$9
Glipizide25$127$5
Potassium Chloride11$111$10
Benazepril12$59$5
Amoxicillin16$37$2
Hydrochlorothiazide11$7$1

2020: 23 drugs

Part D drugs prescribed in 2020
Vemlidy67$83,325$1,244
Tacrolimus191$33,653$176
Sandimmune14$10,457$747
Ursodiol38$8,300$218
Entecavir71$5,626$79
Mycophenolate Mofetil69$3,976$58
Tenofovir Disoproxil19$2,440$128
Fludrocortisone Acetate31$697$22
Pantoprazole86$529$6
Amlodipine Besylate105$521$5
Gabapentin38$364$10
Omeprazole32$268$8
Famotidine24$260$11
Amoxicillin19$200$11
Losartan26$190$7
Tamsulosin16$152$10
Carvedilol25$123$5
Furosemide26$114$4
Prednisone14$111$8
Metoprolol32$78$2
Mirtazapine17$77$5
Atorvastatin15$66$4
Sulfamethoxazole-Trimethoprim12$57$5

2019: 22 drugs

Part D drugs prescribed in 2019
Vemlidy48$54,660$1,139
Tacrolimus166$23,331$141
Ursodiol42$9,909$236
Mycophenolate Mofetil68$7,799$115
Entecavir65$6,472$100
Tenofovir Disoproxil40$2,665$67
Cyclosporine Modified15$2,192$146
Pantoprazole112$1,004$9
Amlodipine Besylate125$572$5
Fludrocortisone Acetate26$561$22
Gabapentin33$495$15
Famotidine20$443$22
Nystop13$303$23
Omeprazole28$274$10
Terazosin15$207$14
Losartan29$175$6
Metoprolol40$148$4
Hydralazine12$146$12
Levothyroxine11$129$12
Carvedilol16$101$6
Atorvastatin11$71$6
Furosemide12$23$2

2018: 23 drugs

Part D drugs prescribed in 2018
Atovaquone24$25,444$1,060
Ursodiol69$19,708$286
Tacrolimus136$15,512$114
Entecavir31$12,675$409
Mycophenolate Mofetil67$8,151$122
Tenofovir Disoproxil30$8,089$270
Cyclosporine Modified24$4,687$195
Metoprolol19$884$47
Pantoprazole89$882$10
Gabapentin45$757$17
Fludrocortisone Acetate40$590$15
Amlodipine Besylate114$422$4
Famotidine31$311$10
Prednisone23$198$9
Omeprazole29$189$7
Losartan32$165$5
Mirtazapine16$113$7
Metoprolol19$107$6
Terazosin11$102$9
Quetiapine13$87$7
Sulfamethoxazole-Trimethoprim11$77$7
Furosemide11$53$5
Amoxicillin17$37$2

2017: 22 drugs

Part D drugs prescribed in 2017
Entecavir49$35,580$726
Viread30$30,125$1,004
Baraclude16$21,842$1,365
Tacrolimus109$21,505$197
Atovaquone18$21,208$1,178
Ursodiol47$12,996$277
Nexium12$4,608$384
Mycophenolate Mofetil55$3,812$69
Cyclosporine Modified11$1,387$126
Fludrocortisone Acetate68$916$13
Gabapentin42$593$14
Metoprolol12$524$44
Omeprazole58$504$9
Amlodipine Besylate53$273$5
Pantoprazole36$223$6
Prednisone15$132$9
Furosemide21$106$5
Sulfamethoxazole-Trimethoprim40$99$2
Famotidine12$82$7
Losartan17$59$3
Amoxicillin16$51$3
Metoprolol13$30$2

2016: 17 drugs

Part D drugs prescribed in 2016
Entecavir34$29,335$863
Tacrolimus103$11,708$114
Ursodiol31$7,015$226
Sirolimus14$3,121$223
Mycophenolate Mofetil29$2,382$82
Diphenoxylate-Atropine13$490$38
Fludrocortisone Acetate35$468$13
Spironolactone25$310$12
Omeprazole46$229$5
Pantoprazole30$226$8
Amlodipine Besylate54$225$4
Prednisone14$154$11
Furosemide29$82$3
Sulfamethoxazole-Trimethoprim15$79$5
Trazodone11$73$7
Metoprolol20$69$3
Losartan14$41$3

2015: 9 drugs

Part D drugs prescribed in 2015
Baraclude16$19,979$1,249
Viread18$18,409$1,023
Entecavir23$17,061$742
Tacrolimus60$8,787$146
Ursodiol24$7,474$311
Mycophenolate Mofetil16$1,321$83
Omeprazole23$162$7
Pantoprazole14$158$11
Amlodipine Besylate14$55$4

2014: 3 drugs

Part D drugs prescribed in 2014
Baraclude92$115,865$1,259
Viread82$75,858$925
Pantoprazole13$121$9

2013: 3 drugs

Part D drugs prescribed in 2013
Viread60$54,532$909
Baraclude40$42,272$1,057
Epivir Hbv14$5,554$397

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
76.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1225226475
Licence
CA PA 20349, NV PA1061
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Medicaid ID
NV 1225226475
Taxonomy
Physician assistant (363A00000X); Physician assistant, surgical (363AS0400X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2007-10-11
NPI last updated
2026-01-06
NPI record certified
2026-01-06

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