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Bill Chen, MD

Psychiatry · San Francisco

NPI 1023578713

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
9
1 carrier
Office
1
Since medical school
7 years
Saint Louis University School of Medicine, 2019

Offices

1 location · Sutter Bay Medical Foundation · 3,783 clinicians in this group

Looking this up.

Hospitals listed: California Pacific Medical Center - Mission Bernal · California Pacific Medical Ctr-Davies Campus Hosp. 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 at (415) 600-5959 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 A189587 · Current

Licensed to practise in California · since 2023 · expires 2027-08-31 · Saint Louis University School of Medicine.

Matched on the licence number without its letter prefix; check the name before relying on it.

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 Psychiatry and Neurology - Psychiatry

Hospitals they work in

2 hospitals

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

  • California Pacific Medical Center - Mission BernalSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Church · Has an emergency departmentPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 76% would definitely recommend it
    Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.322, Oct 2024 – Sep 2025
  • California Pacific Medical Ctr-Davies Campus HospSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Other · No emergency departmentPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 74% would definitely recommend it
    Overall rating: 3 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.187, Oct 2024 – Sep 2025
See every measure and the patient survey for California Pacific Medical Center - Mission Bernal

Behind the star rating — Deaths: 0 better, 5 the same, 0 worse of 5 measures. Safety: 1 better, 6 the same, 0 worse of 7 measures. Readmissions: 0 better, 3 the same, 3 worse of 6 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at California Pacific Medical Center - Mission Bernal
Clostridium Difficile (C.Diff)Infections0.322BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.24 (0.19 to 2.28) · 336 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.87 (0.47 to 1.27)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths163.19 (101.27 to 225.11) · 28 casesNo differentJul 2022 – Jun 2024
Death rate for COPD patientsComplications and deaths8.5 · 44 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths9.6 · 155 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths13.4 · 177 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths11.6 · 32 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.2 · 1,281 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.19 (0 to 0.42) · 2,912 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.24 (0.04 to 0.45) · 2,681 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.07 (1.81 to 6.33) · 787 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.61 (0 to 3.31) · 425 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.46 (0.79 to 4.12) · 755 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.36 (0 to 16.38) · 431 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.47 (1.38 to 9.55) · 401 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.7 (0.2 to 3.2) · 105 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.27 (0 to 1.16) · 2,291 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths2.4 · 369 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.602No differentOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections1.618No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0No differentOct 2024 – Sep 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits22 · 242 casesNoneJul 2023 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits20.9 · 197 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits39.6 · 203 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits18.1 · 292 casesNoneJul 2023 – Jun 2025
Rate of readmission after hip/knee replacementUnplanned return visits4.9 · 353 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.9 · 74 casesNoneJul 2023 – Jun 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1 (0.7 to 1.4) · 110 casesNo differentJan 2024 – Dec 2024

What patients said (406 patients answered, 18% of those asked)

Patient survey stars by topic at California Pacific Medical Center - Mission Bernal
Cleanliness4
Nurse communication3
Doctor communication4
Communication about medicines3
Discharge information3
Overall hospital rating4
Quietness3
Recommend hospital4
Share of patients giving the best answer at California Pacific Medical Center - Mission Bernal
Room was "always" clean76%
Nurses "always" communicated well78%
Doctors "always" communicated well81%
Staff "always" explained60%
Yes, staff "did" give patients this information86%
Yes, staff "did" give patients information about help after discharge85%
Doctors "always" explained things so they could understand78%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect86%
Patients who gave a rating of "9" or "10" (high)74%
Staff "always" explained new medications74%
Nurses "always" explained things so they could understand76%
Nurses "always" listened carefully75%
Nurses "always" treated them with courtesy and respect83%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital76%
Staff "always" explained possible side effects47%
Yes, staff "did" give patients information about possible symptoms87%
See every measure and the patient survey for California Pacific Medical Ctr-Davies Campus Hosp

Behind the star rating — Deaths: 0 better, 4 the same, 0 worse of 4 measures. Safety: 1 better, 5 the same, 0 worse of 6 measures. Readmissions: 0 better, 4 the same, 1 worse of 5 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at California Pacific Medical Ctr-Davies Campus Hosp
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.187BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.02 (0 to 2.09) · 232 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.98 (0.56 to 1.4)No differentJul 2022 – Jun 2024
Death rate for heart failure patientsComplications and deaths10 · 72 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths15.1 · 106 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths10.4 · 257 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.8 · 721 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.26 (0.03 to 0.49) · 2,031 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.25 (0.04 to 0.45) · 2,032 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.35 (0.94 to 5.76) · 419 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.41 (0 to 3) · 211 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.84 (1.24 to 4.44) · 414 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths11.95 (2.91 to 20.98) · 218 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.61 (1.47 to 9.75) · 198 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.74 (0.22 to 3.26) · 52 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.32 (0 to 1.28) · 1,461 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4.6 · 58 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections1.756No differentOct 2024 – Sep 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits22.1 · 91 casesNoneJul 2023 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits65.3 · 84 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits-26.6 · 115 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.4 · 142 casesNoneJul 2023 – Jun 2025
Rate of readmission after hip/knee replacementUnplanned return visits5.5 · 55 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.6 · 25 casesNoneJul 2023 – Jun 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1 (0.7 to 1.3) · 312 casesNo differentJan 2024 – Dec 2024

What patients said (602 patients answered, 22% of those asked)

Patient survey stars by topic at California Pacific Medical Ctr-Davies Campus Hosp
Cleanliness4
Nurse communication2
Doctor communication4
Communication about medicines3
Discharge information3
Overall hospital rating3
Quietness2
Recommend hospital4
Share of patients giving the best answer at California Pacific Medical Ctr-Davies Campus Hosp
Room was "always" clean75%
Nurses "always" communicated well73%
Doctors "always" communicated well79%
Staff "always" explained59%
Yes, staff "did" give patients this information86%
Yes, staff "did" give patients information about help after discharge88%
Doctors "always" explained things so they could understand73%
Doctors "always" listened carefully78%
Doctors "always" treated them with courtesy and respect85%
Patients who gave a rating of "9" or "10" (high)70%
Staff "always" explained new medications72%
Nurses "always" explained things so they could understand68%
Nurses "always" listened carefully71%
Nurses "always" treated them with courtesy and respect81%
"Always" quiet at night46%
"YES", patients would definitely recommend the hospital74%
Staff "always" explained possible side effects46%
Yes, staff "did" give patients information about possible symptoms85%

Original Medicare doctor bills

$8,170

Medicare paid this office $8,170 for 31 people.

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

Largest Original Medicare bills
Psychiatric diagnostic evaluation with medical services12$1,928$161

Who their Medicare patients are

31 Original Medicare patients in 2024. Average age 64 · Women 39% · Also on Medicaid 61% · Health risk score 1.87. Above the middle of the specialty; the typical psychiatry clinician is at 1.35.

Conditions among them: High blood pressure 75% · Depression 55%.

The office billed $29,553, Medicare allowed $10,494 and paid $8,170; for 70 services of 10 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
20243170641.87$29,553$8,170
20231526621.98$5,469$1,747
20222551561.28$10,546$3,315

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

2022: 1 service

Original Medicare services billed in 2022
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes12$849$53

Medicaid work

$822 in 2023

Medicaid paid $822 for 23 billed services this clinician did in 2023, up to 16 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 2023
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES23$822
Medicaid work by year
202323116$822
202225113$822
See the largest Medicaid services in earlier years

2022

Largest Medicaid services in 2022
SBSQ HOSPITAL IP/OBS CARE SF/LOW MDM 25 MINUTES25$822

Drugs they prescribed that Part D paid

$1,696

Pharmacies billed $1,696 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 52) in 2024. At or below the middle of the specialty; the typical psychiatry clinician is at 0%.

51 generic and fewer than 11 brand-name prescriptions · $1,696 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
202452190% (0)None$1,696
202320327NoneNone$8,219
2022698650% (0)8%$128,512
2021334510% (0)6%$39,708
202074110% (0)None$3,318
20194214NoneNone$2,266

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

See the drugs prescribed each year

2023: 7 drugs

Part D drugs prescribed in 2023
Risperidone29$371$13
Clonazepam18$163$9
Trazodone29$148$5
Fluoxetine13$147$11
Citalopram Hbr11$86$8
Sertraline11$70$6
Diazepam12$18$2

2022: 23 drugs

Part D drugs prescribed in 2022
Abilify Maintena20$54,882$2,744
Divalproex Sodium Er16$2,629$164
Quetiapine30$2,414$80
Aripiprazole18$1,187$66
Duloxetine13$988$76
Atomoxetine16$981$61
Trazodone48$652$14
Fluoxetine57$566$10
Bupropion Xl26$428$16
Sertraline40$419$10
Clozapine13$334$26
Escitalopram24$332$14
Mirtazapine27$314$12
Gabapentin14$311$22
Olanzapine14$297$21
Divalproex17$287$17
Risperidone32$267$8
Propranolol13$266$20
Buspirone31$180$6
Topiramate18$151$8
Benztropine Mesylate12$96$8
Clonazepam13$78$6
Lithium Carbonate15$38$3

2021: 12 drugs

Part D drugs prescribed in 2021
Aripiprazole20$533$27
Quetiapine17$495$29
Haloperidol11$380$35
Mirtazapine13$250$19
Buspirone17$238$14
Trazodone29$238$8
Divalproex12$198$17
Lamotrigine14$157$11
Sertraline15$136$9
Escitalopram12$135$11
Fluoxetine11$95$9
Duloxetine12$92$8

2020: 1 drug

Part D drugs prescribed in 2020
Risperidone15$188$13

Money from drug and device companies

$15 in 2025

A payment is not proof that care is biased.

Payments by company
BiocompositesStimulan$15
1 payment
  • Meals for Stimulan · 2025-10-09 · $15
See the published payment
Every published payment
BiocompositesMeals · 2025-10-09Stimulan$15

Professional record

NPI
1023578713
Licence
CA 189587California A189587: Current · expires 2027-08-31
Trained
Saint Louis University School of Medicine, 2019 · 7 years ago
Video visits
Lists video visits
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Psychiatry (2084P0800X)
Mailing address
791 Vida Larga Loop, Milpitas, CA, 95035
NPI first listed
2019-03-20
NPI last updated
2023-08-29
NPI record certified
2023-08-29

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