NPI age
19 years
Enumerated 2007-03-19
● Active
Type 1 · Individual
James Willig
Willig is 1 of 127 internal medicine providers in Dallas and 1 of 920 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX, AL
2 states
Status
Active
No deactivations on record
Last NPPES update
2025-07-09
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 920 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
2 states
Top 83% — 16% of peers are multi-state
Subspecialties
0
35% of peers hold subspecialties
NPI lifetime · 2007 → 2026
2007-03Enumerated in NPPES
2007
2026
Where they practice
Practice location
6201 Harry Hines Blvd
Dallas, TX 753902610
Mailing address
Po Box 845347
Dallas, TX 752847208
Specialties
-
Internal Medicine PrimaryAn internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients...
Practice context
Part of a multi-provider practice. 449 other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new internal medicine provider has been added in Dallas in the last 180 days.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.