NPI age
15 years
Enumerated 2010-08-17
● Active
Type 1 · Individual
John Howard Rex, MD
Rex is 1 of 198 internal medicine providers in Houston and 1 of 920 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2010-08-17
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 920 active internal medicine providers in Texas.
NPI age
15 years
↓ 2 yr below median (17 yr)
State licenses
1 state
16% of peers hold multiple states
Subspecialties
0
35% of peers hold subspecialties
NPI lifetime · 2010 → 2026
2010-08Enumerated in NPPES
2010
2026
Where they practice
Practice location
2617c W Holcombe Blvd # 114
Houston, TX 770251601
Mailing address
2617c W Holcombe Blvd # 114
Houston, TX 770251601
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...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | P080H1776 | |
| 01 (TX) | 1322455 | TEXAS PROVIDER IDENTIFICATION (TPI) |
| 01 (TX) | G8957 | TEXAS MEDICAL LICENSE NUMBER |
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
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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.
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