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Margaret Chen, MD

Family Practice · Berkeley

NPI 1427403617

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
9
1 carrier
Offices
6
Since medical school
10 years
Graduated 2016

Offices

6 locations · UCSF Medical Group Business Services · University of California San Francisco

Looking this up.

Hospitals listed: UCSF Medical Center. 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. Chen’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 A152850 · Current

Licensed to practise in California · since 2017 · expires 2027-11-30 · David Geffen School of Medicine at UCLA.

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 Family Medicine - Family Medicine

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
74.5 / 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.

  • UCSF Medical CenterSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of University of California Health, which runs 12 hospitalsHome of UCSF Helen Diller Family Comprehensive Cancer Center, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 81% would definitely recommend it
    Overall rating: 4 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 4.9 (3.79 to 6.02) · 7,590 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 12.8 (11.3 to 14.4) · 2,019 cases, Jan 2024 – Dec 2024Better than the national rate — Death rate among surgical inpatients with serious treatable complications: 139.4 (110.22 to 168.58) · 452 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.622, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.626, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.491, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.8 (0.7 to 1) · 2,336 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for UCSF Medical Center

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: 3 better, 5 the same, 3 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 UCSF Medical Center
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.9 (3.79 to 6.02) · 7,590 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12.8 (11.3 to 14.4) · 2,019 casesWorseJan 2024 – Dec 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths139.4 (110.22 to 168.58) · 452 casesBetterJul 2022 – Jun 2024
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.622BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.626BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.491BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.8 (0.7 to 1) · 2,336 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.24 (0.58 to 1.9) · 4,689 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.05 (0.89 to 1.2)No differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.9 · 89 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.5 · 85 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10.1 · 132 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.6 · 454 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 618 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.6 · 380 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.7 · 5,000 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.22 (0.06 to 0.38) · 15,965 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.2 (0.05 to 0.35) · 17,859 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.85 (0 to 1.83) · 4,184 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2 (1.1 to 2.9) · 6,516 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.35 (4.49 to 10.21) · 3,989 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5 (3.22 to 6.77) · 4,087 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.95 (0.74 to 3.15) · 2,034 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.95 (0.63 to 1.28) · 15,431 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 399 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.899No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.689No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.224No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16 · 156 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20 · 564 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits60.3 · 160 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-9.7 · 550 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits44.1 · 660 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.8 · 667 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.7 (4.8 to 6.7) · 2,019 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6 · 421 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.5 · 53 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20 · 107 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.9 (11.3 to 17.1) · 3,247 casesNo differentJan 2022 – Dec 2024

What patients said (3,181 patients answered, 25% of those asked)

Patient survey stars by topic at UCSF Medical Center
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at UCSF Medical Center
Room was "always" clean71%
Nurses "always" communicated well80%
Doctors "always" communicated well80%
Staff "always" explained61%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge87%
Doctors "always" explained things so they could understand74%
Doctors "always" listened carefully78%
Doctors "always" treated them with courtesy and respect86%
Patients who gave a rating of "9" or "10" (high)76%
Staff "always" explained new medications75%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully78%
Nurses "always" treated them with courtesy and respect86%
"Always" quiet at night50%
"YES", patients would definitely recommend the hospital81%
Staff "always" explained possible side effects46%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$21,522

Medicare paid this office $21,522 for 149 people.

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

Largest Original Medicare bills
Return visit (30+ min)46$3,987$75
Long return visit (40+ min)23$3,481$116
Long return visit (40+ min)16$2,001$105
Short return visit (20+ min)34$1,881$54
Return visit (30+ min)20$1,561$71
See all 9 services
Every Original Medicare service billed
Return visit (30+ min)46$3,987$75
Long return visit (40+ min)23$3,481$116
Long return visit (40+ min)16$2,001$105
Short return visit (20+ min)34$1,881$54
Return visit (30+ min)20$1,561$71
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's54$940$14
Telephone medical discussion with physician, 11-20 minutes14$741$53
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's25$400$14
Online digital evaluation and management service for an established patient for up to 7 days, total time 5-10 minutes29$377$10

Who their Medicare patients are

149 Original Medicare patients in 2024. Average age 72 · Under 65 8% · 85 and older 9% · Also on Medicaid 26% · Health risk score 1.31. Above the middle of the specialty; the typical family practice clinician is at 1.13.

Conditions among them: High blood pressure 45% · Depression 31% · Cancer 20% · Chronic kidney disease 19% · Diabetes 17% · Atrial fibrillation 10% · Stroke 10% · Coronary heart disease 9% · COPD 9% · Dementia 7%.

The office billed $140,078, Medicare allowed $28,868 and paid $21,522; for 367 services of 18 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
2024149367721.31$140,078$21,522
2023118201731.17$118,111$17,641
2022115165711.08$88,831$13,509
20216799711.24$61,416$8,885
20204861690.89$35,483$4,576

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: 5 services

Original Medicare services billed in 2023
Return visit (30+ min)54$5,315$78
Long return visit (40+ min)22$3,777$114
New patient visit (45+ min)15$1,193$80
Short return visit (20+ min)19$963$48
Telephone medical discussion with physician, 11-20 minutes11$720$55

2022: 4 services

Original Medicare services billed in 2022
Return visit (30+ min)40$3,853$82
Long return visit (40+ min)13$2,587$123
Short return visit (20+ min)33$1,708$50
New patient visit (45+ min)12$1,316$110

2021: 2 services

Original Medicare services billed in 2021
Long return visit (40+ min)19$3,016$121
Return visit (30+ min)26$2,144$82

2020: 1 service

Original Medicare services billed in 2020
Return visit (30+ min)22$1,275$55

Medicaid work

$905 in 2022

Medicaid paid $905 for 15 billed services this clinician did in 2022, 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 2022
Telehealth originating site facility fee15$905
Medicaid work by year
202215114$905
202140113$2,194
202032116$1,645
See the largest Medicaid services in earlier years

2021

Largest Medicaid services in 2021
Telehealth originating site facility fee40$2,194

2020

Largest Medicaid services in 2020
Telehealth originating site facility fee32$1,645

Drugs they prescribed that Part D paid

$112,425

Pharmacies billed $112,425 in 2024.

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

Opioids were 2% of their Part D prescriptions (17 of 883) in 2024. Above the middle of the specialty; the typical family practice clinician is at 2%.

712 generic and fewer than 11 brand-name prescriptions · $112,425 in drug cost · 12 antibiotic prescriptions.

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
Ozempic14$20,150$1,439
Albuterol Sulfate Hfa27$879$33
Atorvastatin76$690$9
Ventolin Hfa11$616$56
Gabapentin22$556$25
See all 24 drugs
Every Part D drug this clinician prescribed
Ozempic14$20,150$1,439
Albuterol Sulfate Hfa27$879$33
Atorvastatin76$690$9
Ventolin Hfa11$616$56
Gabapentin22$556$25
Levothyroxine45$438$10
Diclofenac13$374$29
Rosuvastatin17$367$22
Amlodipine Besylate31$285$9
Metformin24$263$11
Alendronate25$248$10
Amlodipine-Valsartan12$241$20
Losartan16$239$15
Fluticasone Propionate21$207$10
Famotidine22$182$8
Citalopram Hbr20$133$7
Metoprolol12$128$11
Omeprazole17$106$6
Pantoprazole13$89$7
Spironolactone11$71$6
Venlafaxine Hcl Er11$69$6
Lisinopril13$69$5
Furosemide11$10$1
Paxlovid11$0$0

Year by year

Part D prescribing by year
20248831742% (17)None$112,425
2023619130NoneNone$53,865
20224601393% (14)13%$35,607
202116953NoneNone$10,652
202048230% (0)None$6,593
201956180% (0)None$11,643
201869230% (0)None$6,328

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

See the drugs prescribed each year

2023: 15 drugs

Part D drugs prescribed in 2023
Atorvastatin52$921$18
Rosuvastatin15$823$55
Levothyroxine29$574$20
Gabapentin11$494$45
Metformin24$457$19
Fluticasone Propionate23$455$20
Metoprolol19$431$23
Lisinopril21$353$17
Losartan13$254$20
Alendronate28$211$8
Amlodipine Besylate19$211$11
Famotidine12$153$13
Citalopram Hbr15$116$8
Simvastatin14$99$7
Lorazepam13$81$6

2022: 9 drugs

Part D drugs prescribed in 2022
Eliquis12$6,527$544
Atorvastatin34$524$15
Levothyroxine15$291$19
Amlodipine Besylate29$206$7
Metformin13$144$11
Simvastatin21$128$6
Sertraline14$112$8
Fluticasone Propionate12$108$9
Lisinopril18$43$2

Money from drug and device companies

$15 in 2025

Industry payments by year
202511None$15
202311None$16

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
AstraZeneca Pharmaceuticals LPWainua$15
1 payment
  • Meals for Wainua · 2025-08-08 · $15
See the published payment
Every published payment
AstraZeneca Pharmaceuticals LPMeals · 2025-08-08Wainua$15
See earlier years (2023)

2023: $16

Payments by company in 2023
DexcomDexcom G6 Transmitter$16
1 payment
  • Meals for Dexcom G6 Transmitter · 2023-10-11 · $16

Professional record

NPI
1427403617
Licence
CA A152850California A152850: Current · expires 2027-11-30
Group
UCSF Medical Group Business Services · University of California San Francisco
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Family medicine (207Q00000X)
Mailing address
1001 Potrero Ave Bldg 80-83, San Francisco, CA, 94110
NPI first listed
2016-04-26
NPI last updated
2020-03-02
NPI record certified
2020-03-02

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