NPI age
20 years
Enumerated 2006-02-06
● Active
Type 1 · Individual
DR. Guillermo L Montanez JR., MD
Montanez is 1 of 51 specialist providers in McAllen and 1 of 4038 in Texas.
Primary specialty
Specialist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2008-07-18
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 4038 active specialist providers in Texas.
NPI age
20 years
↑ 2 yr above median (18 yr)
State licenses
1 state
0% of peers hold multiple states
Subspecialties
0
7% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-02Enumerated in NPPES
2006
2026
Where they practice
Practice location
1200 E Savannah Ave, Suite 18
McAllen, TX 785031727
Mailing address
Po Box 2105
McAllen, TX 785052105
Specialties
-
Specialist PrimaryAn individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 135513309 | |
| 01 (TX) | 0071JA | BC/BS OF TEXAS |
Practice context
Part of a multi-provider practice. 20 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.