Dr. Robert J. Postlewait
- Gender: Male
- Experience: 13 years
- Graduation year: 2008
- Sole propriator: No
- NPI: 1396907366
Dr. Robert J. Postlewait MD
Internist
He is located at 912 South Capital Of Texas Highway Suite 100 in West Lake Hills, TX 78746. Can help patients with the following: Abdominal Pain, Acute Pain, Chest Pain, Chronic Obstructive Pulmonary Disease (COPD), Gastroesophageal Reflux Disease (GERD), High Blood Pressure. His National Provider Identifier (NPI) number is 1396907366. Appointment can be made via the phone number (512) 306-8360. He is affiliated with 3 practices and 2 hospitals.
Conditions treated
Dr. Robert James Postlewait, being an internist, 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. Robert J. Postlewait.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. Robert J. Postlewait
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Robert J. Postlewait 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 |
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 |
Oscar Insurance Company
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 11 plans from Oscar Insurance Company
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Gold Classic Guided Care (8 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Gold Classic Standard Guided Care (8 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Gold Simple Diabetes Guided Care (8 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Gold Simple Guided Care (8 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Silver Classic Standard Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Breathe Easy with Enhanced COPD Benefits Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Chronic Care CKM Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Women's Health with Menopause Benefits Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
UnitedHealthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 14 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Essential ($0 Virtual Urgent Care) | HMO · Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard+ (Dental + Vision) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Gold Advantage ($0 Virtual Urgent Care, $8 Tier 2 Rx) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Advantage+ ($0 Virtual Urgent Care, $8 Tier 2 Rx, Dental + Vision) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx, Dental + Vision) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Standard | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Silver Advantage ($0 Virtual Urgent Care, $5 Tier 2 Rx) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Advantage+ ($0 Virtual Urgent Care, $5 Tier 2 Rx, Dental + Vision) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Standard | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value ($0 Virtual Urgent Care) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value+ ($0 Virtual Urgent Care, Dental + Vision) | HMO · Silver | Non Preferred | 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. Robert J. Postlewait 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. Robert J. Postlewait is enrolled to bill Medicare as a Practitioner - Internal Medicine .
Bills through: St. John Physicians, Inc.
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.
Payments received
Drug payment
| AstraZeneca | $121 |
| Lilly | $37 |
| Valeritas | $24 |
Other
| Food and Beverage | $210 |
Studies
Graduated in 2008Affiliated practices
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Questions & Answers
Does Dr. Robert James Postlewait have affiliation with practices?
Dr. Robert James Postlewait is affiliated with Siggins Memorial Clinic. For the full list of practices see this list.
What conditions does Dr. Robert James Postlewait treat?
Dr. Robert James Postlewait provides treatment for Abdominal Pain, Acute Pain, Chest Pain, Chronic Obstructive Pulmonary Disease (COPD), Gastroesophageal Reflux Disease (GERD), High Blood Pressure. For the full list see this list.
Does Dr. Robert James Postlewait accept patients with Blue Cross and Blue Shield of Texas?
Yes, Dr. Robert James Postlewait is listed in-network for Blue Cross and Blue Shield of Texas through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Where can you meet with Dr. Robert James Postlewait?
Dr. Robert James Postlewait's office is located at 912 South Capital Of Texas Highway Suite 100 in West Lake Hills, TX 78746.
Has Dr. Robert James Postlewait affiliation with hospitals?
Dr. Robert James Postlewait is affiliated with GREAT PLAINS REGIONAL MEDICAL CENTER. For the full list of hospitals see this list.