JENNIFER Y CHEN MD
NPI 1376771758
Internal Medicine - Gastroenterology in San Francisco, CA

Q: What is Jennifer Chen's NPI number?

The NPI number for Jennifer Chen is 1376771758. It was assigned to this individual provider in the NPPES registry on June 24, 2009.

Q: What is Jennifer Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Jennifer Chen was last updated on November 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 24, 2009PECOS EnrolledAccepts Medicare Assignment

91.85/100

CMS Quality Rating

400 PARNASSUS AVE FL 7, SAN FRANCISCO, CA 94143(415) 502-4444(415) 502-2249 Get Directions Write a Review

NPPES record last updated: November 29, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Jennifer Y Chen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JENNIFER Y CHEN MD (NPI 1376771758) is an individual gastroenterology provider in San Francisco, California, licensed in California (A149830) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Harvard Medical School (2009).

NPPES Registry Identity

NPI1376771758

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameJENNIFER Y CHENCredential: MD

Location Address400 PARNASSUS AVE FL 7San Francisco, CA 94143-2202

Mailing Address400 Parnassus Ave Fl 7San Francisco, CA 94143-2202 · (415) 502-4444 · Fax (415) 502-2249

Phone(415) 502-4444

Fax(415) 502-2249

Sole ProprietorNo

Medical School CMSHarvard Medical SchoolGraduated 2009

Enumeration DateJune 24, 2009

Last NPPES UpdateNovember 29, 2024

NPPES CertifiedNovember 29, 2024

✔ NPI 1376771758 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · A149830

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License 250627 (MA)

400 PARNASSUS AVE FL 7, San Francisco, CA 94143

Open in Google Maps ↗

Secondary Practice Location 1

Location 155 Fruit St, GI UnitBoston, MA 02114-2621 · Phone (617) 724-6113

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Jennifer Y Chen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9032363155

PECOS Enrollment IDI20170908003263

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Jennifer Chen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco

Same address

Surgery

400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
5,645 clinicians in this Medicare group

NPI 1346329380 (415) 353-2161

Ucsf Medical Group Business Services

Same address

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94122

Reassigned Medicare billing, California enrollment
5,544 clinicians in this Medicare group

NPI 1477624104 (415) 353-2808

Regents Of The University Of California

0.1 mi

Endocrinology, Diabetes & Metabolism

505 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
2,112 clinicians in this Medicare group

NPI 1376613943 (415) 353-2350

City & County Of San Francisco

1.1 mi

Mental Health (Including Community Mental Health Center)

375 LAGUNA HONDA BLVD
San Francisco, CA 94116

Reassigned Medicare billing, California enrollment
1,573 clinicians in this Medicare group

NPI 1528083300 (415) 759-3348

University Of California Sfgh Medical Group

2.9 mi

Medical Oncology

995 POTRERO AVE, BLDG.80, RM 229
San Francisco, CA 94110

Reassigned Medicare billing, California enrollment
Also billed through NPI 1578538609 (California)
637 clinicians in this Medicare group

NPI 1356696215 (415) 476-4082

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

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 G0500

Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.

18 services18 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

14 services12 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

13 services13 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.85/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

83.53

Promoting Interoperability

100

Improvement Activities

Cost

68.01

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. GREGORY SCOTT MERRILL LCSW

Social Worker (Clinical)