ASTRANA CARE HOSPITALISTS, A MEDICAL CORPORATION
NPI 1265658595
Hospitalist in Alhambra, CA
About Astrana Care Hospitalists, A Medical Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ASTRANA CARE HOSPITALISTS, A MEDICAL CORPORATION (NPI 1265658595) is a healthcare organization registered as a hospitalist in Alhambra, California and active in the NPI registry since April 2007. The organization lists Thomas S. Lam, C.e.o., as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Astrana Care Hospitalists, A Medical Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by January 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
77Medicare enrollment records show 77 clinicians reassign Medicare billing to Astrana Care Hospitalists, A Medical Corporation, which bills Medicare for the services they deliver. Of these, 4 practice at this address and 38 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 8
Nearest to this location (20)
See all 77Source: 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 Astrana Care Hospitalists, A Medical Corporation's NPI number?
The NPI number for Astrana Care Hospitalists, A Medical Corporation is 1265658595. It was assigned to this organization in the NPPES registry on April 17, 2007.
Where is Astrana Care Hospitalists, A Medical Corporation located?
Astrana Care Hospitalists, A Medical Corporation is located at 1680 S Garfield Ave # 204, Alhambra, CA 91801. The listed phone number is (626) 943-6476.
What is Astrana Care Hospitalists, A Medical Corporation's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Astrana Care Hospitalists, A Medical Corporation enrolled in Medicare?
Yes. Astrana Care Hospitalists, A Medical Corporation is registered in the Medicare PECOS enrollment system.
When is Astrana Care Hospitalists, A Medical Corporation's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by January 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Astrana Care Hospitalists, A Medical Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 77 clinicians in 8 Medicare specialties reassign their Medicare billing to Astrana Care Hospitalists, A Medical Corporation. 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. The largest specialties are Internal Medicine (37), Family Practice (13) and Hospitalist (11). Of these, 4 practice at this address and 38 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 Astrana Care Hospitalists, A Medical Corporation was last updated on May 3, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Astrana Care Hospitalists, A Medical Corporation · NPI 1265658595
Hospitalist organization in Alhambra, California. Organization record, active in the CMS NPPES registry since April 17, 2007.
## Identity
- **NPI:** 1265658595 (Entity type: Organization)
- **Enumerated:** April 17, 2007
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **Organization subpart:** No
- **Authorized official:** Thomas Lam, C.E.O.
## Practice location
- **Address:** 1680 S GARFIELD AVE # 204, Alhambra, CA 91801-5413
- **Phone:** (626) 943-6476 · **Fax:** (818) 844-3887
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** January 31, 2027 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 77 clinicians in 8 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (37), Family Practice (13), Hospitalist (11); 4 practice at this address and 38 within 10 miles; [full list](https://npiprofile.com/npi/1265658595/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 3, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1265658595) · Data from the CMS NPPES public registry.