NPI age
20 years
Enumerated 2006-03-29
● Active
Type 1 · Individual
DR. John Williamson, M.D.
Williamson is 1 of 4 pain medicine providers in Huntsville and 1 of 319 in Texas.
Primary specialty
Pain Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2019-12-11
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 319 active pain medicine providers in Texas.
NPI age
20 years
↑ 6 yr above median (14 yr)
State licenses
1 state
6% of peers hold multiple states
Subspecialties
0
40% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-03Enumerated in NPPES
2006
2026
Where they practice
Practice location
133 Medical Park Ln Ste B
Huntsville, TX 773404979
Mailing address
4400 Fm 1061
Amarillo, TX 791244716
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
1020 Riverwood Ct Ste 200
Conroe, TX 773042974
Location 3
1901 Medi Park, Suite 2002
Amarillo, TX 791062110
Specialties
-
Pain Medicine PrimaryPain Medicine is a primary medical specialty based on a distinct body of knowledge and a well-defined scope of clinical practice that is founded on science, research and education. It is concerned with the study of pain, the prevention...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 141581201 |
Practice context
Part of a multi-provider practice. 2 other active providers share this practice address in NPPES.
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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.