RYAN C. CHANG MD
NPI 1831277417
Internal Medicine - Critical Care Medicine in San Francisco, CA
About Ryan C. Chang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RYAN C. CHANG MD (NPI 1831277417) is an individual critical care medicine provider in San Francisco, California, licensed in California (A63692) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ryan C. Chang 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAN FRANCISCO, CA 94115
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 Ryan Chang's NPI number?
The NPI number for Ryan Chang is 1831277417. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is Ryan Chang located?
Ryan Chang practices at 2200 Ofarrell St, San Francisco, CA 94115. The listed phone number is (415) 833-2000.
What is Ryan Chang's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Ryan Chang enrolled in Medicare?
Yes. Ryan Chang 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.
When was this NPI record last updated?
The NPPES record for Ryan Chang was last updated on December 13, 2021. 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.
# Ryan C. Chang, MD · NPI 1831277417
Critical Care Medicine physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1831277417 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** A63692 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2200 OFARRELL ST, San Francisco, CA 94115-3357
- **Phone:** (415) 833-2000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** George Washington University School Of Medicine, class of 1996
## Record status
- **NPPES last updated:** December 13, 2021
- **Other identifiers:** Medicaid 00A636920 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1831277417) · Data from the CMS NPPES public registry.