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TERESA CHEN M.D.
NPI 1336352558
Internal Medicine - Nephrology in San Francisco, CA

Active since May 07, 2007PECOS EnrolledAccepts Medicare Assignment
74.46/100
CMS Quality Rating
400 PARNASSUS AVE, SAN FRANCISCO, CA 94143(415) 353-1551 Get Directions Write a Review

NPPES record last updated: September 26, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Teresa Chen M.d. NPPES

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

TERESA CHEN M.D. (NPI 1336352558) is an individual nephrology provider in San Francisco, California, licensed in California (C179475) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1336352558
Entity TypeIndividualFemale
Primary Taxonomy207RN0300X
Provider Legal NameTERESA CHENCredential: M.D.
Location Address400 PARNASSUS AVESan Francisco, CA 94143-2202
Mailing Address400 Parnassus AveSan Francisco, CA 94143-2202 · (415) 353-1551
Phone(415) 353-1551
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateMay 7, 2007
Last NPPES UpdateSeptember 26, 2025
NPPES CertifiedSeptember 26, 2025
✔ NPI 1336352558 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
Licenses✔ Licensed in CA · C179475✔ Licensed in MD · D71030
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Also ListedInternal MedicineTaxonomy 207R00000X · License C179475 (CA)
400 PARNASSUS AVE, San Francisco, CA 94143
Open in Google Maps ↗

Secondary Practice Location 1

Location 11001 Potrero Ave. Bldg. 100, 3rd Fl. #342San Francisco, CA 94110-3518 · Phone (628) 206-8843

Other Identifiers 1

Medicaid054883900MD

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

Teresa Chen M.d. 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 ID3779747233
PECOS Enrollment IDI20220714002475
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

5

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

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
University Of California San Francisco
Same address
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1164512851 (415) 476-1000
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 1063487122 (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 3

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
113 services64 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
60 services32 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
16 services16 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.

74.46/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability76
Improvement Activities40
Cost46.68

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
6 suppliers48 claims4,095 services$0.30 avg. paid by Medicare
Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
2 suppliers19 claims2,280 services$0.20 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
5 suppliers38 claims38 services$17.75 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
3 suppliers15 claims16 services$12.66 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

DR. ALEJANDRA GABRIELA DE ALBA CAMPOMANES MD, MPH
Ophthalmology
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2560
DR. MARISSA A BOECK M.D.
Surgery (Surgical Critical Care)
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2161
DR. JACQUELINE EVA WEINSTEIN M.D.
Otolaryngology (Pediatric Otolaryngology)
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-1000
TIFFANY PONG ROSS PA-C
Physician Assistant
400 PARNASSUS AVE, 3RD FLOOR, SUITE 311
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2739
SHINTARO TATEBE MSPT
Physical Therapist
400 PARNASSUS AVE, A-68
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-8574
DR. YVONNE W WU MD
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2813
DR. DAVID S. BRADFORD MD
Orthopaedic Surgery
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2739
DR. SANG-MO KANG MD
Surgery
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-1551

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Teresa Chen's NPI number?

The NPI number for Teresa Chen is 1336352558. It was assigned to this individual provider in the NPPES registry on May 7, 2007.

Where is Teresa Chen located?

Teresa Chen practices at 400 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 353-1551.

What is Teresa Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Teresa Chen enrolled in Medicare?

Yes. Teresa Chen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Teresa Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Teresa Chen reassigns Medicare benefits to 5 organizations: Ucsf Medical Group Business Services (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Regents Of The University Of California (San Francisco, CA), City & County Of San Francisco (San Francisco, CA) and University Of California Sfgh Medical Group (San Francisco, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Teresa Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Teresa Chen was last updated on September 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.