CHI-WHEI LIN, MD, INC.
NPI 1912328865
Internal Medicine in Laguna Hills, CA
About Chi-whei Lin, Md, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHI-WHEI LIN, MD, INC. (NPI 1912328865) is a healthcare organization registered as an internal medicine in Laguna Hills, California and active in the NPI registry since December 2013. The organization lists Chi-whei Lin, 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)
Chi-whei Lin, Md, 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 Chi-Whei Lin, MD, Inc., which bills Medicare for the services this clinician delivers.
Clinician (1)
Laguna Hills, CA 92653
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 Chi-Whei Lin, MD, Inc.'s NPI number?
The NPI number for Chi-Whei Lin, MD, Inc. is 1912328865. It was assigned to this organization in the NPPES registry on December 19, 2013.
Where is Chi-Whei Lin, MD, Inc. located?
Chi-Whei Lin, MD, Inc. is located at 23521 Paseo De Valencia Suite 310, Laguna Hills, CA 92653. The listed phone number is (949) 716-4555.
What is Chi-Whei Lin, MD, Inc.'s specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Chi-Whei Lin, MD, Inc. enrolled in Medicare?
Yes. Chi-Whei Lin, MD, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Chi-Whei Lin, MD, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Chi-Whei Lin, MD, 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 Chi-Whei Lin, MD, Inc. was last updated on June 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Chi-Whei Lin, Md, Inc. · NPI 1912328865
Internal Medicine organization in Laguna Hills, California. Organization record, active in the CMS NPPES registry since December 19, 2013.
## Identity
- **NPI:** 1912328865 (Entity type: Organization)
- **Enumerated:** December 19, 2013
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Chi-Whei Lin, PRESIDENT
## Practice location
- **Address:** 23521 PASEO DE VALENCIA, SUITE 310, Laguna Hills, CA 92653-3107
- **Phone:** (949) 716-4555 · **Fax:** (949) 716-4437
## 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:** June 27, 2025
- **Other identifiers:** Other 1114057254
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Source: [NPI Profile](https://npiprofile.com/npi/1912328865) · Data from the CMS NPPES public registry.