# Matthew S Chang, MD

Source: https://ourhealthnetwork.com/doctor/matthew-chang-md-1598949521
NPI: 1598949521
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

Matthew S Chang, MD is a gastroenterology based in San Francisco, CA practicing at Permanente Medical Group Inc with NPI 1598949521.

## Profile

- Primary specialty: Gastroenterology
- Credential: MD
- Gender: Male
- Medical school: UNIVERSITY OF MICHIGAN MEDICAL SCHOOL
- Graduation year: 2006
- NPI: 1598949521 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1598949521))

## Practice and contact

- Practice name: Permanente Medical Group Inc
- Address: 2350 Geary Blvd, San Francisco, CA, 941153305
- Phone: (415) 833-2871
- Group practice size: 10921 members

## Insurance accepted (3 networks)

This provider is in network with the following insurance carriers, based on federal Transparency in Coverage filings and FHIR provider directories:

- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 6 plans
- [Kaiser Permanente Northern California](https://ourhealthnetwork.com/insurance/kaiser-permanente-northern-california) — 1 plan
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan

To verify a specific plan covers Matthew S Chang, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1598949521).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 1 disclosed payment from medical industry sources totaling approximately $24.

Largest disclosed payer: ABBVIE INC. ($24 cumulative).

Source: CMS Open Payments program (federal financial-transparency dataset). Industry payment disclosures do not imply any wrongdoing; many are legitimate consulting fees, research support, or speaker honoraria.

## Related on OurHealthNetwork

- [More Gastroenterology doctors in SAN FRANCISCO, CA](https://ourhealthnetwork.com/gastroenterology/ca/san-francisco)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1598949521)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)