WILLIAM MARK MILLER M.D.
NPI 1386647121
Family Medicine in Sulphur Springs, TX
About William Mark Miller M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM MARK MILLER M.D. (NPI 1386647121) is an individual family medicine provider in Sulphur Springs, Texas, licensed in Texas (D2530) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William Mark Miller M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Miller reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tyler, TX 75702
- Reassigned Medicare billing, Texas enrollment
- 2,745 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 75482 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 William Miller's NPI number?
The NPI number for William Miller is 1386647121. It was assigned to this individual provider in the NPPES registry on May 24, 2005.
Where is William Miller located?
William Miller practices at 105 Medical Plz, Sulphur Springs, TX 75482. The listed phone number is (903) 885-3181.
What is William Miller's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is William Miller enrolled in Medicare?
Yes. William Miller is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Miller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Miller reassigns Medicare benefits to Christus Trinity Clinic Texas (Tyler, TX). The 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 William Miller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Miller was last updated on July 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.