TMSA - RHEUMATOLOGY
NPI 1265052922
Internal Medicine - Rheumatology in Dallas, TX
About Tmsa - Rheumatology NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TMSA - RHEUMATOLOGY (NPI 1265052922) is a healthcare organization registered as a rheumatology in Dallas, Texas and active in the NPI registry since April 2020. The organization lists Yijun Fan, Md, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
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)
Tmsa - Rheumatology 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 Tmsa - Rheumatology, 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 Tmsa - Rheumatology's NPI number?
The NPI number for Tmsa - Rheumatology is 1265052922. It was assigned to this organization in the NPPES registry on April 23, 2020.
Where is Tmsa - Rheumatology located?
Tmsa - Rheumatology is located at 8440 Walnut Hill Ln Ste 580, Dallas, TX 75231. The listed phone number is (214) 345-5703.
What is Tmsa - Rheumatology's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Tmsa - Rheumatology enrolled in Medicare?
Yes. Tmsa - Rheumatology is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Tmsa - Rheumatology?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Rheumatology) reassigns their Medicare billing to Tmsa - Rheumatology. 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 Tmsa - Rheumatology was last updated on August 21, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Tmsa - Rheumatology · NPI 1265052922
Rheumatology organization in Dallas, Texas. Organization record, active in the CMS NPPES registry since April 23, 2020.
## Identity
- **NPI:** 1265052922 (Entity type: Organization)
- **Enumerated:** April 23, 2020
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **Organization subpart:** No
- **Authorized official:** Yijun Fan, MD
## Practice location
- **Address:** 8440 WALNUT HILL LN STE 580, Dallas, TX 75231-3881
- **Phone:** (214) 345-5703 · **Fax:** (214) 345-5712
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Rheumatology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 21, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1265052922) · Data from the CMS NPPES public registry.