LAWRENCE L. CHAO, MD A PROFESSIONAL CORP.
NPI 1922422526
Clinic/Center - Primary Care in San Francisco, CA
About Lawrence L. Chao, Md A Professional Corp. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAWRENCE L. CHAO, MD A PROFESSIONAL CORP. (NPI 1922422526) is a healthcare organization registered as a primary care in San Francisco, California and active in the NPI registry since February 2014. The organization lists Lawrence L Chao, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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)
Lawrence L. Chao, Md A Professional Corp. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Lawrence L. Chao, MD A Professional Corp., which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.
Clinicians, nearest first (2)
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 Lawrence L. Chao, MD A Professional Corp.'s NPI number?
The NPI number for Lawrence L. Chao, MD A Professional Corp. is 1922422526. It was assigned to this organization in the NPPES registry on February 18, 2014.
Where is Lawrence L. Chao, MD A Professional Corp. located?
Lawrence L. Chao, MD A Professional Corp. is located at 2645 Ocean Ave Suite 207, San Francisco, CA 94132. The listed phone number is (415) 333-3302.
What is Lawrence L. Chao, MD A Professional Corp.'s specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.
Is Lawrence L. Chao, MD A Professional Corp. enrolled in Medicare?
Yes. Lawrence L. Chao, MD A Professional Corp. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Lawrence L. Chao, MD A Professional Corp.?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Internal Medicine, reassign their Medicare billing to Lawrence L. Chao, MD A Professional Corp.. 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. Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Lawrence L. Chao, MD A Professional Corp. was last updated on February 18, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Lawrence L. Chao, Md A Professional Corp. · NPI 1922422526
Primary Care organization in San Francisco, California. Organization record, active in the CMS NPPES registry since February 18, 2014.
## Identity
- **NPI:** 1922422526 (Entity type: Organization)
- **Enumerated:** February 18, 2014
- **Primary specialty:** Clinic/Center - Primary Care · taxonomy 261QP2300X
- **Organization subpart:** Yes (part of Lawrence L. Chao, Md)
- **Authorized official:** Lawrence Chao, PRESIDENT
## Practice location
- **Address:** 2645 OCEAN AVE, SUITE 207, San Francisco, CA 94132-1633
- **Phone:** (415) 333-3302 · **Fax:** (415) 692-8688
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 2 clinicians (Internal Medicine) reassign Medicare billing to this organization (form CMS-855R); 1 practice at this address and 2 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 18, 2014
- **Other identifiers:** Medicare UPIN G79217 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1922422526) · Data from the CMS NPPES public registry.