Dr. Thomas A. Showalter
- Gender: Male
- Experience: 16 years
- Graduated from: Oklahoma State University College Of Osteopathic Medicine
- Graduation year: 2005
- Sole propriator: No
- NPI: 1780853358
Dr. Thomas A. Showalter III D.O.
Oncologist
He is located at 5915 West Memorial Road Suite 200 in Oklahoma City, OK 73142. Can help patients with the following: Acute Pain, Gastroesophageal Reflux Disease (GERD), Glioma, Hyperlipidemia, Penis Cancer, Urinary Tract Infection (UTI). His National Provider Identifier (NPI) number is 1780853358. Appointment can be made via the phone number (405) 773-6400. He is affiliated with 1 practices and 2 hospitals.
Conditions treated
Dr. Thomas Ammen Showalter, being an oncologist, 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. Thomas A. Showalter.
- Abdominal Pain
- Acute Pain
- Anal Cancer
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Basal Cell Carcinoma
- Bile Duct Cancer
- Bladder Cancer
- Bladder Control
- Bone Cancer
- Brain Cancer
- Breast Cancer
- Cancer
- Carcinoid Tumor
- Carcinoma
- Cervical Cancer
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Colon Cancer
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Esophageal Cancer
- Fever
- Gallbladder Cancer
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Glioma
- Head and Neck Cancer
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hodgkin's Disease
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Kidney Cancer
- Larynx Cancer
- Leukemia
- Liver Cancer
- Lung Cancer
- Melanoma
- Mesothelioma
- Migraine
- Nasopharyngeal Cancer
- Nausea and Vomiting
- Neoplasm
- Neuroblastoma
- Non-Hodgkin's Lymphoma (NHL)
- Obesity
- Oral Cancer
- Osteoporosis
- Ovarian Cancer
- Pancreatic Cancer
- Penis Cancer
- Peptic Ulcer
- Pheochromocytoma (PCC)
- Polycythemia
- Prescription Refill
- Prostate Cancer
- Retinoblastoma
- Salivary Gland Cancer
- Sarcoma
- Skin Cancer
- Stomach Cancer
- Testicular Cancer
- Thymoma
- Thyroid Cancer
- Urethral Cancer
- Urethritis
- Urinary Tract Infection (UTI)
- Uterine Cancer
- Vaginal Cancer
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Thomas A. Showalter as in-network for the following 2026 plans.
Health plans
Blue Cross and Blue Shield of Oklahoma
Network data as of Jun 7, 2026, as reported by the insurer.
Show all 13 plans from Blue Cross and Blue Shield of Oklahoma
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Advantage Bronze PPO℠ 202 (5 plan variants) | PPO · Bronze | Blue Advantage PPO | Accepting new patients |
| Blue Advantage Bronze PPO℠ 203 (5 plan variants) | PPO · Expanded Bronze | Blue Advantage PPO | Accepting new patients |
| Blue Advantage Bronze PPO℠ Standard (5 plan variants) | PPO · Expanded Bronze | Blue Advantage PPO | Accepting new patients |
| Blue Advantage Gold PPO℠ 309 (5 plan variants) | PPO · Gold | Blue Advantage PPO | Accepting new patients |
| Blue Advantage Gold PPO℠ 604 (5 plan variants) | PPO · Gold | Blue Advantage PPO | Accepting new patients |
| Blue Advantage Gold PPO℠ Standard (5 plan variants) | PPO · Gold | Blue Advantage PPO | Accepting new patients |
| Blue Advantage Silver PPO℠ 204 (5 plan variants) | PPO · Silver | Blue Advantage PPO | Accepting new patients |
| Blue Advantage Silver PPO℠ 501 (5 plan variants) | PPO · Silver | Blue Advantage PPO | Accepting new patients |
| Blue Advantage Silver PPO℠ Standard (5 plan variants) | PPO · Silver | Blue Advantage PPO | Accepting new patients |
| Blue Preferred Bronze PPO℠ Standard (5 plan variants) | PPO · Expanded Bronze | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Gold PPO℠ Standard (5 plan variants) | PPO · Gold | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Security PPO℠ 200 (5 plan variants) | PPO · Catastrophic | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Silver PPO℠ Standard (5 plan variants) | PPO · Silver | Blue Preferred PPO | Accepting new patients |
CommunityCare
Network data as of Aug 19, 2026, as reported by the insurer.
Show all 10 plans from CommunityCare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| CommunityCare Bronze IH223 | HMO · Expanded Bronze | Preffered | Accepting new patients |
| CommunityCare Bronze IH224 | HMO · Expanded Bronze | Preffered | Accepting new patients |
| CommunityCare Catastrophic | HMO · Catastrophic | Preffered | Accepting new patients |
| CommunityCare Expanded Bronze Standardized | HMO · Expanded Bronze | Preffered | Accepting new patients |
| CommunityCare Gold IH221 | HMO · Gold | Preffered | Accepting new patients |
| CommunityCare Gold L21 | HMO · Gold | Preffered | Accepting new patients |
| CommunityCare Gold Standardized | HMO · Gold | Preffered | Accepting new patients |
| CommunityCare Silver L21 | HMO · Silver | Preffered | Accepting new patients |
| CommunityCare Silver SLIH223 | HMO · Silver | Preffered | Accepting new patients |
| CommunityCare Silver Standardized | HMO · Silver | Preffered | Accepting new patients |
Medica
Network data as of Jun 16, 2026, as reported by the insurer.
Show all 18 plans from Medica
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Harmony by Medica Bronze $0 Copay PCP Visits | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Harmony by Medica Bronze $0 Copay PCP Visits + Adult Eye Exam | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Harmony by Medica Bronze Premier | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Harmony by Medica Bronze Premier + Adult Eye Exam | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Harmony by Medica Expanded Bronze Standard | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Harmony by Medica Expanded Bronze Standard + Adult Eye Exam | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Harmony by Medica Gold $0 Copay PCP Visits | PPO · Gold | Preferred | Accepting new patients |
| Harmony by Medica Gold $0 Copay PCP Visits + Adult Eye Exam | PPO · Gold | Preferred | Accepting new patients |
| Harmony by Medica Gold Share | PPO · Gold | Preferred | Accepting new patients |
| Harmony by Medica Gold Share + Adult Eye Exam | PPO · Gold | Preferred | Accepting new patients |
| Harmony by Medica Gold Standard | PPO · Gold | Preferred | Accepting new patients |
| Harmony by Medica Gold Standard + Adult Eye Exam | PPO · Gold | Preferred | Accepting new patients |
| Harmony by Medica Silver $0 Copay PCP Visits | PPO · Silver | Preferred | Accepting new patients |
| Harmony by Medica Silver $0 Copay PCP Visits + Adult Eye Exam | PPO · Silver | Preferred | Accepting new patients |
| Harmony by Medica Silver Share | PPO · Silver | Preferred | Accepting new patients |
| Harmony by Medica Silver Share + Adult Eye Exam | PPO · Silver | Preferred | Accepting new patients |
| Harmony by Medica Silver Standard | PPO · Silver | Preferred | Accepting new patients |
| Harmony by Medica Silver Standard + Adult Eye Exam | PPO · Silver | Preferred | Accepting new patients |
Mending Health
Network data as of Sep 10, 2026, as reported by the insurer.
Show all 6 plans from Mending Health
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| MENDING Direct Primary Care Bronze 4950 ($0 DPC + $0 PCP + $0 Mental Health) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| MENDING Direct Primary Care Gold $0 Ded ($0 DPC $0 PCP + $0 Mental Health) | HMO · Gold | Preferred | Accepting new patients |
| MENDING Direct Primary Care Silver 2300 ($0 DPC + $0 PCP + $0 Mental Health) | HMO · Silver | Preferred | Accepting new patients |
| MENDING Standard Bronze (No Direct Primary Care, for DPC select DPC Bronze) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| MENDING Standard Gold (No Direct Primary Care, for DPC select DPC Gold) | HMO · Gold | Preferred | Accepting new patients |
| MENDING Standard Silver (No Direct Primary Care, for DPC select DPC Silver) | HMO · Silver | Preferred | Accepting new patients |
UnitedHealthcare
Network data as of Sep 16, 2026, as reported by the insurer.
Show all 13 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Essential (No Referrals) | HMO · Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard (No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard+ (Dental + Vision, No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Gold Advantage ($0 Virtual Urgent Care, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Advantage+ ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $5 Tier 2 Rx, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Standard (No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Silver Advantage ($0 Virtual Urgent Care, $5 Tier 2 Rx, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Advantage+ ($0 Virtual Urgent Care, $5 Tier 2 Rx, Dental + Vision, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Standard (No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value ($0 Virtual Urgent Care, $5 Tier 2 Rx, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value+ ($0 Virtual Urgent Care, $5 Tier 2 Rx, Dental + Vision, No Referrals) | 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. Thomas A. Showalter 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. Thomas A. Showalter is enrolled to bill Medicare as a Practitioner - Medical Oncology .
Bills through: Integris Ambulatory Care Corporation
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
| Lilly | $75 |
| Novartis | $42 |
| Bayer | $29 |
Other
| Food and Beverage | $423 |
Studies
OKLAHOMA STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated in 2005Additional Specialities
- Internist
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Questions & Answers
Does Dr. Thomas Ammen Showalter have affiliation with practices?
Dr. Thomas Ammen Showalter is affiliated with Integris Medical Group.
What conditions does Dr. Thomas Ammen Showalter treat?
Dr. Thomas Ammen Showalter provides treatment for Acute Pain, Gastroesophageal Reflux Disease (GERD), Glioma, Hyperlipidemia, Penis Cancer, Urinary Tract Infection (UTI). For the full list see this list.
Where can you meet with Dr. Thomas Ammen Showalter?
Dr. Thomas Ammen Showalter's office is located at 5915 West Memorial Road Suite 200 in Oklahoma City, OK 73142.
Does Dr. Thomas Ammen Showalter accept insurance?
Dr. Thomas Ammen Showalter is listed in-network for 60 ACA Marketplace (Obamacare/HealthCare.gov) plans from Blue Cross and Blue Shield of Oklahoma, CommunityCare, Medica, Mending Health, UnitedHealthcare. See the Marketplace plans section for details.
Has Dr. Thomas Ammen Showalter affiliation with hospitals?
Dr. Thomas Ammen Showalter is affiliated with INTEGRIS BAPTIST MEDICAL CENTER, INC. For the full list of hospitals see this list.