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

HEIDI M CHANG D.C.
NPI 1538600234
Chiropractor in San Francisco, CA

Active since March 14, 2017
1520 STOCKTON ST, SAN FRANCISCO, CA 94133(415) 391-9686(415) 352-5089 Get Directions Write a Review

NPPES record last updated: September 27, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 27, 2019, Mar 22, 2017, Mar 14, 2017 (3 updates tracked since 2017).

About Heidi M Chang D.c. NPPES

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

HEIDI M CHANG D.C. (NPI 1538600234) is an individual chiropractor in San Francisco, California, licensed in California (33804) and active in the NPI registry since March 2017.

NPPES Registry Identity

NPI1538600234
Entity TypeIndividualFemale
Primary Taxonomy111N00000X
Provider Legal NameHEIDI M CHANGCredential: D.C.
Location Address1520 STOCKTON STSan Francisco, CA 94133-3354
Mailing Address1520 Stockton StSan Francisco, CA 94133-3354 · (415) 391-9686 · Fax (415) 352-5089
Phone(415) 391-9686
Fax(415) 352-5089
Sole ProprietorNo
Enumeration DateMarch 14, 2017
Last NPPES UpdateSeptember 27, 20193 updates tracked since enumeration
✔ NPI 1538600234 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers
Taxonomy Code111N00000X
License✔ Licensed in CA · 33804
Definition
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.
1520 STOCKTON ST, San Francisco, CA 94133
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Heidi M Chang D.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Heidi Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

North East Medical Services
Same address
Federally Qualified Health Center (FQHC)
1520 STOCKTON STREET
San Francisco, CA 94133
  • Reassigned Medicare billing, California enrollment
  • 176 clinicians in this Medicare group
NPI 1518911304 (415) 391-9686

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

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.

MAI ABDELNABI MD
Internal Medicine (Rheumatology)
1520 STOCKTON ST
SAN FRANCISCO, CA 94133
San Francisco County (415) 391-9686
DR. HOI YUNG SIT D.D.S.
Dentist
1520 STOCKTON ST
SAN FRANCISCO, CA 94133
San Francisco County (415) 706-9392
CHUAN-HSIN CHANG M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1520 STOCKTON ST
SAN FRANCISCO, CA 94133
San Francisco County (415) 391-9686
MS. JUDY HSU MD
Internal Medicine
1520 STOCKTON ST
SAN FRANCISCO, CA 94133
San Francisco County (415) 391-9686
KWAN TAM
Licensed Vocational Nurse
1520 STOCKTON ST
SAN FRANCISCO, CA 94133
San Francisco County (415) 391-9686
SHIRLEY CHIANG
Student in an Organized Health Care Education/Training Program
1520 STOCKTON ST
SAN FRANCISCO, CA 94133
San Francisco County (415) 391-9686
CAITLIN HA DDS
Dentist (General Practice)
1520 STOCKTON ST
SAN FRANCISCO, CA 94133
San Francisco County (415) 391-9686
MS. PAN GU LCSW
Social Worker (Clinical)
1520 STOCKTON ST
SAN FRANCISCO, CA 94133
San Francisco County (415) 391-9686

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 Heidi Chang's NPI number?

The NPI number for Heidi Chang is 1538600234. It was assigned to this individual provider in the NPPES registry on March 14, 2017.

Where is Heidi Chang located?

Heidi Chang practices at 1520 Stockton St, San Francisco, CA 94133. The listed phone number is (415) 391-9686.

What is Heidi Chang's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Is Heidi Chang enrolled in Medicare?

Yes. Heidi Chang is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Heidi Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Heidi Chang reassigns Medicare benefits to North East Medical Services (San Francisco, CA). The 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 Heidi Chang'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 Heidi Chang was last updated on September 27, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.