Dr. Gustavo R. Armaiz-Pena
- Gender: Male
- Experience: 8 years
- Graduated from: University Central Del Caribe Escuela De Medicina
- Graduation year: 2013
- Sole propriator: No
- NPI: 1205271095
Dr. Gustavo R. Armaiz-Pena M.D.
Endocrinologist
He is located at 4502 Medical Drive in San Antonio, TX 78229. Can help patients with the following: Carcinoid Tumor, Growth Hormone Imbalance, Hypocalcemia, Hypoglycemia, Insulin Resistance (IR), Thyroid Cancer. His National Provider Identifier (NPI) number is 1205271095. Appointment can be made via the phone number (210) 358-4000. He is affiliated with 2 practices and 1 hospitals.
Conditions treated
Dr. Gustavo R. Armaiz-Pena, being an endocrinologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Gustavo R. Armaiz-Pena.
- Achondroplasia
- Addison's Disease
- Amyloidosis
- Bone Loss
- Carcinoid Tumor
- Cushing's Syndrome
- Diabetes
- Diabetes Insipidus (DI)
- Diabetes Mellitus (DM) Type 1
- Diabetes Mellitus (DM) Type 2
- Diabetic Neuropathy
- Fertility
- Goiter
- Graves' Disease
- Growth Hormone Imbalance
- Gynecomastia
- Hypercalcemia
- Hyperglycemia
- Hyperlipidemia
- Hyperparathyroidism
- Hyperthyroidism
- Hypocalcemia
- Hypoglycemia
- Hypoparathyroidism
- Hypothyroidism
- Insulin Resistance (IR)
- Low Testosterone
- Metabolic Syndrome
- Obesity
- Osteoporosis
- Thyroid Cancer
- Thyroid Disease
- Thyroiditis
- Vitamin D Deficiency
- Wilson-Turner Syndrome
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Gustavo R. Armaiz-Pena as in-network for the following 2026 plans.
Health plans
Blue Cross and Blue Shield of Texas
Network data as of Jun 7, 2026, as reported by the insurer.
Show all 19 plans from Blue Cross and Blue Shield of Texas
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Advantage Bronze HMO℠ 204 (27 plan variants) | HMO · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Bronze HMO℠ 301 (14 plan variants) | HMO · Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Bronze HMO℠ Standard (27 plan variants) | HMO · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ 206 (27 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ 603 (14 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ Standard (27 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ 303 (27 plan variants) | POS · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ 305 (27 plan variants) | POS · Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ Standard (27 plan variants) | POS · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ 203 (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ 803 (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ Standard (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ 202 (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ 605 (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ Standard (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Security HMO℠ 200 (27 plan variants) | HMO · Catastrophic | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ 205 (27 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ 801 (14 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ Standard (27 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
Harbor Health
Network data as of Sep 14, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Harbor Health G0 $0 Deductible $0 PCP $0 Mental Health Office Visit $0 Express Care | HMO · Gold | Preferred | Accepting new patients |
| Harbor Health G1S $30 PCP $30 Mental Health Office Visit $30 Express Care | HMO · Gold | Preferred | Accepting new patients |
| Harbor Health S1 $0 PCP $0 Mental Health Office Visit $0 Express Care | HMO · Silver | Preferred | Accepting new patients |
| Harbor Health S1S $40 PCP $40 Mental Health Office Visit $40 Express Care | HMO · Silver | Preferred | Accepting new patients |
Imperial Insurance Companies, Inc.
Network data as of Sep 16, 2025, as reported by the insurer.
Show all 7 plans from Imperial Insurance Companies, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Imperial Preferred Bronze | HMO · Bronze | Preferred | Accepting new patients |
| Imperial Preferred Gold | HMO · Gold | Preferred | Accepting new patients |
| Imperial Preferred Gold Zero | HMO · Gold | Preferred | Accepting new patients |
| Imperial Preferred Silver | HMO · Silver | Preferred | Accepting new patients |
| Imperial Standard Bronze | HMO · Expanded Bronze | Standard | Accepting new patients |
| Imperial Standard Gold | HMO · Gold | Standard | Accepting new patients |
| Imperial Standard Silver | HMO · Silver | Standard | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Gustavo R. Armaiz-Pena is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Gustavo R. Armaiz-Pena is enrolled to bill Medicare as a Practitioner - Endocrinology (also registered under: Practitioner - Internal Medicine, Practitioner - Hospitalist) .
Bills through: University Of Texas Health Science Center At San Antonio
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Studies
UNIVERSITY CENTRAL DEL CARIBE ESCUELA DE MEDICINA
Graduated in 2013Additional Specialities
- Resident
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- Address: 5107 Medical Drive San Antonio, 78229, TX
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- Address: 8300 Floyd Curl Drive San Antonio, 78229, TX
- Gender: Female
- Address: 5107 Medical Drive San Antonio, 78229, TX
Questions & Answers
Does Dr. Gustavo R. Armaiz-Pena have affiliation with practices?
Dr. Gustavo R. Armaiz-Pena is affiliated with UT Health San Antonio. For the full list of practices see this list.
Has Dr. Gustavo R. Armaiz-Pena affiliation with hospitals?
Dr. Gustavo R. Armaiz-Pena is affiliated with UNIVERSITY HEALTH SYSTEM.
Does Dr. Gustavo R. Armaiz-Pena accept insurance?
Dr. Gustavo R. Armaiz-Pena is listed in-network for 30 ACA Marketplace (Obamacare/HealthCare.gov) plans from Blue Cross and Blue Shield of Texas, Harbor Health, Imperial Insurance Companies, Inc.. See the Marketplace plans section for details.
Where can you meet with Dr. Gustavo R. Armaiz-Pena?
Dr. Gustavo R. Armaiz-Pena's office is located at 4502 Medical Drive in San Antonio, TX 78229.
What conditions does Dr. Gustavo R. Armaiz-Pena treat?
Dr. Gustavo R. Armaiz-Pena provides treatment for Carcinoid Tumor, Growth Hormone Imbalance, Hypocalcemia, Hypoglycemia, Insulin Resistance (IR), Thyroid Cancer. For the full list see this list.