Guillermo L. Montanez, MD
Specialist · McAllen, TX
Guillermo L. Montanez, MD is a specialist with a practice address in McAllen, Texas, and NPI 1902878721, issued on Feb 6, 2006. Check the license (Texas H3711, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Guillermo L. Montanez
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- H3711 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1200 E Savannah Ave, McAllen, TX 78503
- Phone
- (956) 631-8354
- Enumerated
- Feb 6, 2006
- Record last updated
- Jul 18, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (956) 631-8441
- Medicaid ID
- 135513309 TX
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,716 in Texas → Look up another NPI →
Also registered at 1200 E Savannah Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Saroja Viswamitra, MDPhysical Medicine & Rehabilitation Physician1598764292
- Subbarao Yarra, MDCardiovascular Disease Physician1417928326
Verify Guillermo L. Montanez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license H3711Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average specialist in 2024
62 Medicare Part D claims for 22 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Myrbetriq11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Guillermo L. Montanez among 1,716 specialist records in Texas
Guillermo L. Montanez, MD is one of 1,716 specialist records with a practice address in Texas. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 46% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 18% of these records are
- Record last updated2008 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Texas
There are 1,716 specialist records in Texas.
All 1,716 in Texas → Every provider in McAllen → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Julio Astacio, M.D.McAllen, TX 785031063693547
- Ramiro Caballero, MDMcAllen, TX 785031730141086
- Nga Goodahl, DOMcAllen, TX 785031689691453
- Ruy Mireles QuintanillaMcAllen, TX 785031467458422
- Jennifer Griffith, B.S., O.T.RMcAllen, TX 785041518032465
- Jacobo Hohenstein, M.D.McAllen, TX 785041174621403
- Vincent Honrubia, M.D.McAllen, TX 785041487658035
- Hossein Lahiji, M.D.McAllen, TX 785041255375390
Common questions
What is Guillermo L. Montanez, MD's NPI number?
Guillermo L. Montanez, MD's National Provider Identifier (NPI) is 1902878721, issued on Feb 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Guillermo L. Montanez, MD located?
The NPPES record lists a practice address at 1200 E Savannah Ave, McAllen, TX, 78503. Phone: (956) 631-8354. Providers update this record themselves, so call before visiting.
How can I verify Guillermo L. Montanez, MD's license?
NPPES lists Texas license number H3711, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Guillermo L. Montanez, MD prescribe under Medicare Part D?
In 2024, Guillermo L. Montanez, MD had 62 Medicare Part D claims for 22 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.