JOHNTIN MEDICAL GROUP INC
NPI 1336261031
Preferred Provider Organization in Rowland Heights, CA
About Johntin Medical Group Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHNTIN MEDICAL GROUP INC (NPI 1336261031) is a healthcare organization registered as a preferred provider organization in Rowland Heights, California and active in the NPI registry since April 2007. The organization lists Tin Yung, Medical Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Johntin Medical Group 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 Johntin Medical Group 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 Johntin Medical Group Inc's NPI number?
The NPI number for Johntin Medical Group Inc is 1336261031. It was assigned to this organization in the NPPES registry on April 4, 2007.
Where is Johntin Medical Group Inc located?
Johntin Medical Group Inc is located at 18397 Colima Rd, Rowland Heights, CA 91748. The listed phone number is (626) 913-1888.
What is Johntin Medical Group Inc's specialty?
The primary specialty registered for this NPI is Preferred Provider Organization with taxonomy code 305R00000X.
Is Johntin Medical Group Inc enrolled in Medicare?
Yes. Johntin Medical Group Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Johntin Medical Group Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Johntin Medical Group 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 Johntin Medical Group Inc was last updated on July 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Johntin Medical Group Inc · NPI 1336261031
Preferred Provider Organization organization in Rowland Heights, California. Organization record, active in the CMS NPPES registry since April 4, 2007.
## Identity
- **NPI:** 1336261031 (Entity type: Organization)
- **Enumerated:** April 4, 2007
- **Primary specialty:** Preferred Provider Organization · taxonomy 305R00000X
- **Organization subpart:** No
- **Authorized official:** Tin Yung, MEDICAL DIRECTOR
## Practice location
- **Address:** 18397 COLIMA RD, Rowland Heights, CA 91748-2749
- **Phone:** (626) 913-1888 · **Fax:** (626) 913-1999
## 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:** July 2, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1336261031) · Data from the CMS NPPES public registry.