WILLIAM MARTENS LEE MD
NPI 1043262512
Internal Medicine - Hepatology in Dallas, TX
About William Martens Lee Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM MARTENS LEE MD (NPI 1043262512) is an individual hepatology provider in Dallas, Texas, licensed in Texas (H9452) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William Martens Lee Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Lee reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Dallas, TX 75390
- Reassigned Medicare billing, Texas enrollment
- 5,299 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DALLAS, TX 75390
DALLAS, TX 75390
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 Lee's NPI number?
The NPI number for William Lee is 1043262512. It was assigned to this individual provider in the NPPES registry on May 16, 2006.
Where is William Lee located?
William Lee practices at 5323 Harry Hines Blvd, Dallas, TX 75390. The listed phone number is (214) 645-8600.
What is William Lee's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hepatology, with taxonomy code 207RI0008X.
Is William Lee enrolled in Medicare?
Yes. William Lee is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Lee's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Lee reassigns Medicare benefits to The University Of Texas Southwestern Medical Center At Dallas (Dallas, 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 Lee's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Lee accept?
Health plans from Blue Cross and Blue Shield of Texas list William Lee as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for William Lee was last updated on April 3, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# William Martens Lee, MD · NPI 1043262512
Hepatology physician in Dallas, Texas. Individual provider, active in the CMS NPPES registry since May 16, 2006.
## Identity
- **NPI:** 1043262512 (Entity type: Individual)
- **Enumerated:** May 16, 2006
- **Primary specialty:** Internal Medicine - Hepatology · taxonomy 207RI0008X
- **State license:** H9452 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 5323 HARRY HINES BLVD, Dallas, TX 75390-7208
- **Phone:** (214) 645-8600
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** The University Of Texas Southwestern Medical Center At Dallas (NPI 1386619237, Dallas, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 3, 2008
- **Other identifiers:** Medicare ID-Type Unspecified 87H413; Medicaid 104345702 (TX); Medicare UPIN D74146
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Source: [NPI Profile](https://npiprofile.com/npi/1043262512) · Data from the CMS NPPES public registry.