PROSPER OAK MEDICAL
NPI 1649911371
Family Medicine in Hacienda Heights, CA
About Prosper Oak Medical NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PROSPER OAK MEDICAL (NPI 1649911371) is a healthcare organization registered as a family medicine in Hacienda Heights, California and active in the NPI registry since April 2022. The organization maintains 2 additional practice locations and lists Edward T Lin, Ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
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)
Prosper Oak Medical is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
5Medicare enrollment records show 5 clinicians reassign Medicare billing to Prosper Oak Medical, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.
Clinicians, nearest first (5)
Hacienda Heights, CA 91745
Hacienda Heights, CA 91745
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 E Lin, Do, Inc.'s NPI number?
The NPI number for E Lin, Do, Inc. is 1649911371. It was assigned to this organization in the NPPES registry on April 5, 2022. The provider is doing business as Prosper Oak Medical.
Where is E Lin, Do, Inc. located?
E Lin, Do, Inc. is located at 1850 S Azusa Ave Ste 201, Hacienda Heights, CA 91745. The listed phone number is (626) 913-2383.
What is E Lin, Do, Inc.'s specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is E Lin, Do, Inc. enrolled in Medicare?
Yes. E Lin, Do, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through E Lin, Do, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 3 Medicare specialties reassign their Medicare billing to E Lin, Do, 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. The largest specialties are Family Practice (3), Hospitalist (1) and Internal Medicine (1). Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for E Lin, Do, Inc. was last updated on December 7, 2023. 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.
# Prosper Oak Medical · NPI 1649911371
Family Medicine organization in Hacienda Heights, California. Organization record, active in the CMS NPPES registry since April 5, 2022.
## Identity
- **NPI:** 1649911371 (Entity type: Organization)
- **Enumerated:** April 5, 2022
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Legal business name:** E Lin, Do, Inc.
- **Organization subpart:** No
- **Authorized official:** Edward Lin, CEO
## Practice location
- **Address:** 1850 S AZUSA AVE STE 201, Hacienda Heights, CA 91745-6854
- **Phone:** (626) 913-2383 · **Fax:** (626) 913-2013
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 5 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Family Practice (3), Hospitalist (1), Internal Medicine (1); 2 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 7, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1649911371) · Data from the CMS NPPES public registry.