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Jennifer Y Chen, MD

Gastroenterology · San Francisco

NPI 1376771758

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
9
1 carrier
Offices
3
Since medical school
17 years
Harvard Medical School, 2009

Offices

3 locations · Regents of the University of California · 706 clinicians in this group

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 at (415) 476-4029 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

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

$12,723

Medicare paid this office $12,723 for 59 people.

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

Largest Original Medicare bills
Removal of polyps or growths of large bowel using an endoscope with mechanical snare12$2,821$235
Initial hospital care with moderate level of medical decision making at least 75 minutes13$2,014$155
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes12$987$71
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito18$86$5

Procedures Medicare counted

Procedure volume Medicare published
Colonoscopy14More than 44% of doctors who do this
Upper gastrointestinal (GI) endoscopy for acid reflux1-10None

Procedures year by year

Procedures billed to Original Medicare by year
Procedure201920202021202220232024
Removal of polyps or growths of large bowel using an endoscope with mechanical snare13131225–12
Biopsy of large bowel using a flexible endoscope16161126––
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope2016––––

Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.

Who their Medicare patients are

59 Original Medicare patients in 2024. Average age 68 · Women 53% · Also on Medicaid 58% · Health risk score 1.58. Above the middle of the specialty; the typical gastroenterology clinician is at 1.42.

Conditions among them: High blood pressure 73% · Diabetes 36% · Depression 32% · Chronic kidney disease 25% · Coronary heart disease 20% · Stroke 20% · Cancer 19% · COPD 19%.

The office billed $110,567, Medicare allowed $15,621 and paid $12,723; for 129 services of 24 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
202459129681.58$110,567$12,723
20233257732.18$30,370$5,052
202281189711.84$112,120$16,898
202167176722.54$92,664$15,525
202060158672.33$82,460$13,082
201988185671.68$89,831$15,636
201881219681.95$105,437$16,965
20175795682.73$73,569$8,355
20166193701.77$80,882$11,535

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
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito17$75$4

2022: 5 services

Original Medicare services billed in 2022
Removal of polyps or growths of large bowel using an endoscope with mechanical snare25$5,209$208
Initial hospital care with moderate level of medical decision making at least 75 minutes22$3,839$174
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes22$2,131$63
Biopsy of large bowel using a flexible endoscope26$1,528$59
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito42$191$5

2021: 5 services

Original Medicare services billed in 2021
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes33$4,367$64
Initial hospital care with moderate level of medical decision making at least 75 minutes22$3,938$179
Removal of polyps or growths of large bowel using an endoscope with mechanical snare12$2,630$219
Biopsy of large bowel using a flexible endoscope11$335$30
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito21$100$5

2020: 6 services

Original Medicare services billed in 2020
Removal of polyps or growths of large bowel using an endoscope with mechanical snare13$2,366$182
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes14$2,302$66
Initial hospital care with moderate level of medical decision making at least 75 minutes12$2,203$184
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope16$1,725$108
Biopsy of large bowel using a flexible endoscope16$1,252$78
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito34$161$5

2019: 5 services

Original Medicare services billed in 2019
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes31$3,469$65
Removal of polyps or growths of large bowel using an endoscope with mechanical snare13$3,054$235
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope20$2,123$106
Biopsy of large bowel using a flexible endoscope16$1,944$121
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito42$194$5

2018: 5 services

Original Medicare services billed in 2018
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes28$3,781$63
Removal of polyps or growths of large bowel using an endoscope with mechanical snare13$2,728$195
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope16$1,569$98
Biopsy of large bowel using a flexible endoscope13$1,019$78
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito36$168$5

2017: 1 service

Original Medicare services billed in 2017
Return visit (30+ min)24$2,236$80

2016: 2 services

Original Medicare services billed in 2016
Return visit (30+ min)24$2,427$90
New patient visit (60+ min)11$1,866$170

Medicaid work

$174 in 2024

Medicaid paid $174 for 13 billed services this clinician did in 2024, up to 13 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
Moderate sedation services provided by the same physician or other qualified health care professional performing the diagnostic or therapeutic service that the sedation supports, requiring the presence of an independent trained observer to assist in the monitoring of the patient's level of consciousness and physiological status; initial 15 minutes of intraservice time, patient age 5 years or older13$174
Medicaid work by year
202413113$174
202276118$1,233
202120112$295
202054215$2,019
201967217$1,057
201878216$2,145
See the largest Medicaid services in earlier years

2022

Largest Medicaid services in 2022
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES76$1,233

2021

Largest Medicaid services in 2021
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES20$295

2020

Largest Medicaid services in 2020
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES42$1,013
Upper gastrointestinal endoscopy with biopsy12$1,006

2019

Largest Medicaid services in 2019
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES54$889
Moderate sedation services provided by the same physician or other qualified health care professional performing the diagnostic or therapeutic service that the sedation supports, requiring the presence of an independent trained observer to assist in the monitoring of the patient's level of consciousness and physiological status; initial 15 minutes of intraservice time, patient age 5 years or older13$168

2018

Largest Medicaid services in 2018
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES64$2,009
Moderate sedation services provided by the same physician or other qualified health care professional performing the diagnostic or therapeutic service that the sedation supports, requiring the presence of an independent trained observer to assist in the monitoring of the patient's level of consciousness and physiological status; initial 15 minutes of intraservice time, patient age 5 years or older14$137

Drugs they prescribed that Part D paid

$200

Pharmacies billed $200 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 12) in 2024. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

$200 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
202412None0% (0)None$200
202223None0% (0)None$3,478
202127NoneNoneNone$1,219
201822None0% (0)0%$404
201712528None10%$16,751
201617748None20%$26,438
2015172360% (0)34%$243,465
2014104260% (0)36%$23,801
201368270% (0)34%$6,506

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

See the drugs prescribed each year

2022: 1 drug

Part D drugs prescribed in 2022
Mycophenolate Mofetil11$2,073$188

2017: 2 drugs

Part D drugs prescribed in 2017
Omeprazole29$443$15
Ranitidine23$182$8

2016: 4 drugs

Part D drugs prescribed in 2016
Omeprazole25$788$32
Ranitidine19$198$10
Amitriptyline15$192$13
Prednisone15$102$7

2015: 6 drugs

Part D drugs prescribed in 2015
Xifaxan23$37,872$1,647
Nexium13$6,083$468
Nadolol15$1,503$100
Omeprazole22$901$41
Ranitidine27$172$6
Amlodipine Besylate12$137$11

2014: 3 drugs

Part D drugs prescribed in 2014
Xifaxan14$16,483$1,177
Nexium15$6,212$414
Ranitidine15$70$5

2013: 1 drug

Part D drugs prescribed in 2013
Omeprazole13$481$37

Money from drug and device companies

$25 in 2025

Industry payments by year
202511None$25
202111$2,000$2,000

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
Abbott LaboratoriesPerclose Prostyle$25
1 payment
  • Meals for Perclose Prostyle · 2025-02-25 · $25
See the published payment
Every published payment
Abbott LaboratoriesMeals · 2025-02-25Perclose Prostyle$25
See earlier years (2021)

2021: $2,000

Payments by company in 2021
Merck Sharp & DohmeNone$2,000
1 payment
  • Consulting · 2021-05-05 · $2,000

Research money

Money a company paid to run a study. Where it went to their institution, the clinician is named as an investigator and did not receive it; the amount covers the whole study, often across many sites.

Research payments by company and study
Merck Sharp & Dohme LLC · Null · 2023Their institution$80,750
Merck Sharp & Dohme LLC · Null · 2024Their institution$60,563

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.

Professional record

NPI
1376771758
Licence
MA 241420, MA 250627
Trained
Harvard Medical School, 2009 · 17 years ago
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207RG0100X (207RG0100X); Internal medicine (207R00000X)
Mailing address
400 Parnassus Ave Fl 7, San Francisco, CA, 94143
NPI first listed
2009-06-24
NPI last updated
2024-11-29
NPI record certified
2024-11-29

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

Extra NPI addresses: 55 Fruit St, Boston, MA, 02114