1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Family Medicine
  6. NPI Profile

MICHELLE TSANG
NPI 1851754956
Family Medicine in San Francisco, CA

Active since April 05, 2016PECOS Enrolled
1001 POTRERO AVE, BLDG 80-83, SAN FRANCISCO, CA 94110(415) 206-5252 Get Directions Write a Review

NPPES record last updated: January 5, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Michelle Tsang NPPES

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

MICHELLE TSANG (NPI 1851754956) is an individual family medicine provider in San Francisco, California, licensed in California (A152261) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1851754956
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameMICHELLE TSANG
Location Address1001 POTRERO AVE, BLDG 80-83San Francisco, CA 94110-3518
Mailing Address1001 Potrero Ave, Bldg 80-83San Francisco, CA 94110-3518 · (415) 206-5252
Phone(415) 206-5252
Sole ProprietorNo
Enumeration DateApril 5, 2016
Last NPPES UpdateJanuary 5, 2022
NPPES CertifiedJanuary 5, 2022
✔ NPI 1851754956 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A152261
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1001 POTRERO AVE, San Francisco, CA 94110
Open in Google Maps ↗

Other Names 1

Other Name (5)Ashley Tsang

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michelle Tsang is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

3

Medicare enrollment records show Michelle Tsang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California Sfgh Medical Group
Same address
Family Medicine
1001 POTRERO AVE, BLDG 80 WARD 83 RM 320
San Francisco, CA 94110
  • Reassigned Medicare billing, California enrollment
  • 842 clinicians in this Medicare group
NPI 1174598296 (628) 206-8610
Healthright 360
1.4 mi
Community/Behavioral Health
1563 MISSION ST, 1ST, 3RD, AND 4TH FLOOR
San Francisco, CA 94103
  • Reassigned Medicare billing, California enrollment
  • 76 clinicians in this Medicare group
NPI 1467988691 (415) 762-3700
Maniilaq Association
2,424 mi
Public Health, Federal
51003 MAIN ST.
Kobuk, AK 99751
  • Reassigned Medicare billing, Alaska and Texas enrollments
  • 100 clinicians in this Medicare group
NPI 1265709901 (907) 948-2221

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94110 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
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.

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.

ROCIO C AGRAZ-LARA RN, PHN
Registered Nurse
1001 POTRERO AVE, ZSFG BUILDING 90 4TH FLOOR
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-8524
DR. SUSAN WLODARCZYK MD
Student in an Organized Health Care Education/Training Program
1001 POTRERO AVE, BLDG 10, 3RD FLOOR, WARD 13 BOX 1364
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-5164
AMY DINER PSY.D.
Student in an Organized Health Care Education/Training Program
1001 POTRERO AVE
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-5270
CHRISTOPHER RUIZ
Case Manager/Care Coordinator
1001 POTRERO AVE
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-3950
C. STIRLING SOMERS
Counselor
1001 POTRERO AVE
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-5270
WILLIAM RUSSEL CARPENTER FNP-C
Nurse Practitioner (Family)
1001 POTRERO AVE
SAN FRANCISCO, CA 94110
San Francisco County (628) 206-8000
REGENTS OF THE UNIVERSITY OF CALIFORNIA
Clinical Medical Laboratory
1001 POTRERO AVE, BLDG 100, RM 104
SAN FRANCISCO, CA 94110
San Francisco County (415) 502-4775
DR. DENISE RENEE GONZALEZ MD
Internal Medicine
1001 POTRERO AVE, 1M
SAN FRANCISCO, CA 94110
San Francisco County (415) 206-6075

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 Michelle Tsang's NPI number?

The NPI number for Michelle Tsang is 1851754956. It was assigned to this individual provider in the NPPES registry on April 5, 2016. The provider is also known as Ashley Tsang.

Where is Michelle Tsang located?

Michelle Tsang practices at 1001 Potrero Ave Bldg 80-83, San Francisco, CA 94110. The listed phone number is (415) 206-5252.

What is Michelle Tsang's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Michelle Tsang enrolled in Medicare?

Yes. Michelle Tsang is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Michelle Tsang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Tsang reassigns Medicare benefits to 3 organizations: University Of California Sfgh Medical Group (San Francisco, CA), Healthright 360 (San Francisco, CA) and Maniilaq Association (Kobuk, AK). 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 Michelle Tsang'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 Michelle Tsang was last updated on January 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.