GUSTAVO R. ARMAIZ-PENA M.D.
NPI 1205271095
Internal Medicine - Endocrinology, Diabetes & Metabolism in San Antonio, TX

Q: What is Gustavo Armaiz-pena's NPI number?

The NPI number for Gustavo Armaiz-pena is 1205271095. It was assigned to this individual provider in the NPPES registry on May 7, 2013.

Q: What is Gustavo Armaiz-pena's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Active since May 07, 2013PECOS Enrolled

4502 MEDICAL DR, SAN ANTONIO, TX 78229(210) 358-4000 Get Directions Write a Review

NPPES record last updated: August 14, 2025. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Aug 14, 2025, Apr 6, 2022, Aug 30, 2019 and 2 more (5 updates tracked since 2017).

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About Gustavo R. Armaiz-pena M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GUSTAVO R. ARMAIZ-PENA M.D. (NPI 1205271095) is an individual endocrinology, diabetes & metabolism provider in San Antonio, Texas, licensed in Texas (S1976) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1205271095

Entity TypeIndividualMale

Primary Taxonomy207RE0101X

Provider Legal NameGUSTAVO R. ARMAIZ-PENACredential: M.D.

Location Address4502 MEDICAL DRSan Antonio, TX 78229-4402

Mailing Address4502 Medical DrSan Antonio, TX 78229-4402 · (210) 358-4000

Phone(210) 358-4000

Sole ProprietorNo

Enumeration DateMay 7, 2013

Last NPPES UpdateAugust 14, 20255 updates tracked since enumeration

NPPES CertifiedAugust 14, 2025

✔ NPI 1205271095 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in TX · S1976

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Also ListedInternal MedicineTaxonomy 207R00000X · License S1976 (TX)

Also ListedHospitalistTaxonomy 208M00000X · License S1976 (TX)

4502 MEDICAL DR, San Antonio, TX 78229

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Other Identifiers 2

Medicaid400097801TX

Other400097802TX · Cshcn

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc., Molina Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gustavo R. Armaiz-pena M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

10 suppliers21 claims66 services$6.46 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

5 suppliers170 claims170 services$179.86 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EDUARDO N. POLLONO MD

Internal Medicine (Cardiovascular Disease)