CHUK W KWAN M D INC
NPI 1669611729
Internal Medicine - Cardiovascular Disease in San Francisco, CA
About Chuk W Kwan M D Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHUK W KWAN M D INC (NPI 1669611729) is a healthcare organization registered as a cardiovascular disease in San Francisco, California and active in the NPI registry since February 2009. The organization lists Chuk W Kwan, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Chuk W Kwan M D Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Chuk W Kwan M D Inc, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Chuk W Kwan M D Inc's NPI number?
The NPI number for Chuk W Kwan M D Inc is 1669611729. It was assigned to this organization in the NPPES registry on February 13, 2009.
Where is Chuk W Kwan M D Inc located?
Chuk W Kwan M D Inc is located at 929 Clay St Suite 600, San Francisco, CA 94108. The listed phone number is (415) 398-5926.
What is Chuk W Kwan M D Inc's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Chuk W Kwan M D Inc enrolled in Medicare?
Yes. Chuk W Kwan M D Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Chuk W Kwan M D Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Chuk W Kwan M D Inc. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Chuk W Kwan M D Inc was last updated on May 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Chuk W Kwan M D Inc · NPI 1669611729
Cardiovascular Disease organization in San Francisco, California. Organization record, active in the CMS NPPES registry since February 13, 2009.
## Identity
- **NPI:** 1669611729 (Entity type: Organization)
- **Enumerated:** February 13, 2009
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **Organization subpart:** No
- **Authorized official:** Chuk Kwan, PRESIDENT
## Practice location
- **Address:** 929 CLAY ST, SUITE 600, San Francisco, CA 94108-1556
- **Phone:** (415) 398-5926
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 15, 2026
- **Other identifiers:** Medicaid 00G322380 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1669611729) · Data from the CMS NPPES public registry.