Jennifer Y Chen, MD
Gastroenterology · San Francisco
- 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
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.
| Alignment Health BreathEasy (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Clarity (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Harmony (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes CalPlus (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes Care (HMO C-SNP) | Alignment Health Plan | Listed | Sep 28, 2026 |
| Alignment Health Heart & Diabetes Choice (HMO C-SNP) | Alignment Health Plan | Listed | Sep 28, 2026 |
| Alignment Health Honor+ Plan (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health My Choice CalCare (HMO) | Alignment Health Plan | Listed | Oct 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 itOverall 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.
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 4.9 (3.79 to 6.02) · 7,590 cases | Worse | Jul 2022 – Jun 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 12.8 (11.3 to 14.4) · 2,019 cases | Worse | Jan 2024 – Dec 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 139.4 (110.22 to 168.58) · 452 cases | Better | Jul 2022 – Jun 2024 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.622 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.626 | Better | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.491 | Better | Oct 2024 – Sep 2025 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.8 (0.7 to 1) · 2,336 cases | Better | Jan 2024 – Dec 2024 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.24 (0.58 to 1.9) · 4,689 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.05 (0.89 to 1.2) | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 1.9 · 89 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 7.5 · 85 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 10.1 · 132 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 6.6 · 454 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 10.3 · 618 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 9.6 · 380 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 2.7 · 5,000 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.22 (0.06 to 0.38) · 15,965 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.2 (0.05 to 0.35) · 17,859 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 0.85 (0 to 1.83) · 4,184 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2 (1.1 to 2.9) · 6,516 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 7.35 (4.49 to 10.21) · 3,989 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 5 (3.22 to 6.77) · 4,087 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.95 (0.74 to 3.15) · 2,034 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.95 (0.63 to 1.28) · 15,431 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 4 · 399 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.899 | No different | Oct 2024 – Sep 2025 |
| SSI - Abdominal HysterectomyInfections | 0.689 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 1.224 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 16 · 156 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 20 · 564 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 60.3 · 160 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -9.7 · 550 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 44.1 · 660 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.8 · 667 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.7 (4.8 to 6.7) · 2,019 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 6 · 421 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 10.5 · 53 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 20 · 107 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 13.9 (11.3 to 17.1) · 3,247 cases | No different | Jan 2022 – Dec 2024 |
What patients said (3,181 patients answered, 25% of those asked)
| Cleanliness | 4 |
| Nurse communication | 4 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 2 |
| Recommend hospital | 5 |
| Room was "always" clean | 71% |
| Nurses "always" communicated well | 80% |
| Doctors "always" communicated well | 80% |
| Staff "always" explained | 61% |
| Yes, staff "did" give patients this information | 88% |
| Yes, staff "did" give patients information about help after discharge | 87% |
| Doctors "always" explained things so they could understand | 74% |
| Doctors "always" listened carefully | 78% |
| Doctors "always" treated them with courtesy and respect | 86% |
| Patients who gave a rating of "9" or "10" (high) | 76% |
| Staff "always" explained new medications | 75% |
| Nurses "always" explained things so they could understand | 77% |
| Nurses "always" listened carefully | 78% |
| Nurses "always" treated them with courtesy and respect | 86% |
| "Always" quiet at night | 50% |
| "YES", patients would definitely recommend the hospital | 81% |
| Staff "always" explained possible side effects | 46% |
| Yes, staff "did" give patients information about possible symptoms | 90% |
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.
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 12 | $2,821 | $235 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 13 | $2,014 | $155 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 12 | $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 monito | 18 | $86 | $5 |
Procedures Medicare counted
| Colonoscopy | 14 | More than 44% of doctors who do this |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 1-10 | None |
Procedures year by year
| Procedure | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 13 | 13 | 12 | 25 | – | 12 |
| Biopsy of large bowel using a flexible endoscope | 16 | 16 | 11 | 26 | – | – |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 20 | 16 | – | – | – | – |
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
| 2024 | 59 | 129 | 68 | 1.58 | $110,567 | $12,723 |
| 2023 | 32 | 57 | 73 | 2.18 | $30,370 | $5,052 |
| 2022 | 81 | 189 | 71 | 1.84 | $112,120 | $16,898 |
| 2021 | 67 | 176 | 72 | 2.54 | $92,664 | $15,525 |
| 2020 | 60 | 158 | 67 | 2.33 | $82,460 | $13,082 |
| 2019 | 88 | 185 | 67 | 1.68 | $89,831 | $15,636 |
| 2018 | 81 | 219 | 68 | 1.95 | $105,437 | $16,965 |
| 2017 | 57 | 95 | 68 | 2.73 | $73,569 | $8,355 |
| 2016 | 61 | 93 | 70 | 1.77 | $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
| 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 monito | 17 | $75 | $4 |
2022: 5 services
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 25 | $5,209 | $208 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 22 | $3,839 | $174 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 22 | $2,131 | $63 |
| Biopsy of large bowel using a flexible endoscope | 26 | $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 monito | 42 | $191 | $5 |
2021: 5 services
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 33 | $4,367 | $64 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 22 | $3,938 | $179 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 12 | $2,630 | $219 |
| Biopsy of large bowel using a flexible endoscope | 11 | $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 monito | 21 | $100 | $5 |
2020: 6 services
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 13 | $2,366 | $182 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 14 | $2,302 | $66 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 12 | $2,203 | $184 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 16 | $1,725 | $108 |
| Biopsy of large bowel using a flexible endoscope | 16 | $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 monito | 34 | $161 | $5 |
2019: 5 services
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 31 | $3,469 | $65 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 13 | $3,054 | $235 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 20 | $2,123 | $106 |
| Biopsy of large bowel using a flexible endoscope | 16 | $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 monito | 42 | $194 | $5 |
2018: 5 services
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 28 | $3,781 | $63 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 13 | $2,728 | $195 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 16 | $1,569 | $98 |
| Biopsy of large bowel using a flexible endoscope | 13 | $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 monito | 36 | $168 | $5 |
2017: 1 service
| Return visit (30+ min) | 24 | $2,236 | $80 |
2016: 2 services
| 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.
| 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 older | 13 | $174 |
| 2024 | 13 | 1 | 13 | $174 |
| 2022 | 76 | 1 | 18 | $1,233 |
| 2021 | 20 | 1 | 12 | $295 |
| 2020 | 54 | 2 | 15 | $2,019 |
| 2019 | 67 | 2 | 17 | $1,057 |
| 2018 | 78 | 2 | 16 | $2,145 |
See the largest Medicaid services in earlier years
2022
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 76 | $1,233 |
2021
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 20 | $295 |
2020
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 42 | $1,013 |
| Upper gastrointestinal endoscopy with biopsy | 12 | $1,006 |
2019
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 54 | $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 older | 13 | $168 |
2018
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 64 | $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 older | 14 | $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
| 2024 | 12 | None | 0% (0) | None | $200 |
| 2022 | 23 | None | 0% (0) | None | $3,478 |
| 2021 | 27 | None | None | None | $1,219 |
| 2018 | 22 | None | 0% (0) | 0% | $404 |
| 2017 | 125 | 28 | None | 10% | $16,751 |
| 2016 | 177 | 48 | None | 20% | $26,438 |
| 2015 | 172 | 36 | 0% (0) | 34% | $243,465 |
| 2014 | 104 | 26 | 0% (0) | 36% | $23,801 |
| 2013 | 68 | 27 | 0% (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
| Mycophenolate Mofetil | 11 | $2,073 | $188 |
2017: 2 drugs
| Omeprazole | 29 | $443 | $15 |
| Ranitidine | 23 | $182 | $8 |
2016: 4 drugs
| Omeprazole | 25 | $788 | $32 |
| Ranitidine | 19 | $198 | $10 |
| Amitriptyline | 15 | $192 | $13 |
| Prednisone | 15 | $102 | $7 |
2015: 6 drugs
| Xifaxan | 23 | $37,872 | $1,647 |
| Nexium | 13 | $6,083 | $468 |
| Nadolol | 15 | $1,503 | $100 |
| Omeprazole | 22 | $901 | $41 |
| Ranitidine | 27 | $172 | $6 |
| Amlodipine Besylate | 12 | $137 | $11 |
2014: 3 drugs
| Xifaxan | 14 | $16,483 | $1,177 |
| Nexium | 15 | $6,212 | $414 |
| Ranitidine | 15 | $70 | $5 |
2013: 1 drug
| Omeprazole | 13 | $481 | $37 |
Money from drug and device companies
$25 in 2025
| 2025 | 1 | 1 | None | $25 |
| 2021 | 1 | 1 | $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.
| Abbott Laboratories | Perclose Prostyle | $25 | 1 payment
|
See the published payment
| Abbott Laboratories | Meals · 2025-02-25 | Perclose Prostyle | $25 |
See earlier years (2021)
2021: $2,000
| Merck Sharp & Dohme | None | $2,000 | 1 payment
|
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.
| Merck Sharp & Dohme LLC · Null · 2023 | Their institution | $80,750 |
| Merck Sharp & Dohme LLC · Null · 2024 | Their 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