NPI age
17 years
Enumerated 2008-08-12
● Active Type 2 · Organization
Guillermo L Montanez, M.d.,p.a.
Guillermo L Montanez, M.d.,p.a. is 1 of 4038 specialist organizations in Texas.
Primary specialty
Specialist
Practice locations
1
0 secondary on file
Status
Active
No deactivations on record
Authorized official
Montanez
Owner
Last NPPES update
2008-08-12
Source: monthly bulk 2026-05
How this organization compares
Across 4038 active specialist providers in Texas.
NPI age
17 years
≈ at median (18 yr)
Practice locations
1
0 secondary on file
Subspecialties
0
NPI lifetime · 2008 → 2026
2008-08Enumerated in NPPES
2008
2026
Where they practice
Primary practice location
1200 E Savannah Ave Ste 18
McAllen, TX 785031728
Mailing address
Po Box 2105
McAllen, TX 785052105
Authorized official
Guillermo L Montanez, M.D.
Owner
📞 9566318354
Individual providers at this organization
5 individual providers on file at this primary practice address.
- Desmond Adamu, M.D. Urology NPI 1477996585
- Valeria Cedillo Nurse Practitioner NPI 1316763410
- Michael Kongnyuy, MD Urology NPI 1952833006
- Rebecca Olivarez, APRN Nurse Practitioner NPI 1740011451
- Vanessa Salinas, PA-C Physician Assistant NPI 1669051165
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 |
|---|---|---|
| 01 (TX) | 0071JA | BC/BS OF TEXAS |
| 05 (TX) | 135513309 |
Practice context
Multi-provider organization. 5 individual providers on file at this primary address.
Provyx · Custom healthcare lists
Need all 4038 Specialist providers in Texas?
Provyx verifies the list to your scope. Business emails and direct lines are looked up at delivery, validated, and not stored.
Request a quote →How to verify this organization
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Verify the organization is in good standing.Cross-check with the state's business registration and any applicable licensing boards.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.