NPI age
19 years
Enumerated 2006-07-11
● Active
Type 1 · Individual
DR. Gonzalo A. Aillon II, D.O.
Aillon is 1 of 80 internal medicine providers in Harlingen and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2019-10-08
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
1 state
12% of peers hold multiple states
Subspecialties
0
33% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-07Enumerated in NPPES
2006
2026
Where they practice
Practice location
1401 S Rangerville Rd
Harlingen, TX 785527638
Mailing address
1138 Bradley Dr
Duncanville, TX 751374224
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
1605 N State Highway 118 Ste B
Alpine, TX 798302150
Location 3
4545 Fuller Dr, Suite 325
Irving, TX 750386530
Specialties
-
Internal Medicine PrimaryA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer,...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 158305602 | |
| 05 (TX) | 158305603 |
Practice context
Part of a multi-provider practice. 23 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.