oklahoma
Specialties
Internist
Dr. John Gemma
Dr. John Gemma

Dr. John Gemma

  • Gender: Male
  • Experience: 7 years
  • Graduation year: 2014
  • Sole propriator: Yes
  • NPI: 1750791760

Dr. John Gemma

Internist

He is located at 4502 East 41st Street in Tulsa, OK 74135. Can help patients with the following: Acute Pain, Gastroesophageal Reflux Disease (GERD), Heart Disease, Hiatal Hernia, Influenza, Osteoporosis. His National Provider Identifier (NPI) number is 1750791760. Appointment can be made via the phone number (918) 619-4400. He is affiliated with 1 practices and 1 hospitals.

Conditions treated

Dr. John Gemma, 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. John Gemma.

  • 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)

ACA Marketplace (Obamacare/HealthCare.gov) plan networks

Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. John Gemma 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 22 plans from Blue Cross and Blue Shield of Oklahoma
Blue Cross and Blue Shield of Oklahoma plans
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
MyBlue Bronze HMO℠ 902 (3 plan variants) HMO · Bronze Myblue HMO Accepting new patients
MyBlue Bronze HMO℠ 904 (3 plan variants) HMO · Bronze Myblue HMO Accepting new patients
MyBlue Bronze HMO℠ Standard (3 plan variants) HMO · Expanded Bronze Myblue HMO Accepting new patients
MyBlue Gold HMO℠ 704 (3 plan variants) HMO · Gold Myblue HMO Accepting new patients
MyBlue Gold HMO℠ 804 (3 plan variants) HMO · Gold Myblue HMO Accepting new patients
MyBlue Gold HMO℠ Standard (3 plan variants) HMO · Gold Myblue HMO Accepting new patients
MyBlue Silver HMO℠ 705 (3 plan variants) HMO · Silver Myblue HMO Accepting new patients
MyBlue Silver HMO℠ 803 (3 plan variants) HMO · Silver Myblue HMO Accepting new patients
MyBlue Silver HMO℠ Standard (3 plan variants) HMO · Silver Myblue HMO Accepting new patients

Medica

Network data as of Jan 5, 2026, as reported by the insurer.

Show all 18 plans from Medica
Medica plans
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

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. John Gemma is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.

Insurance information looks wrong? Let us know

Medicare Enrollment

Dr. John Gemma 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.

Studies

Graduated in 2014

Affiliated practices

Siggins Memorial Clinic
112 North 5th Street
Barnsdall, 74002 OK
(918) 847-2558

Affiliated hospitals

ST JOHN MEDICAL CENTER, INC
1923 SOUTH UTICA AVENUE
TULSA, 74104 OK
(918) 744-3131

Looking for more Internists?

Out of the 46 internists in this region, here are 10 randomly selected ones for you to explore.

Dr. James Lee
  • Gender: Male
  • Address: 4502 East 41st Street Tulsa, 74135, OK
Dr. Richard Allen Hastings
  • Gender: Male
  • Address: 5606 Southwest Lee Boulevard Suite 305 Lawton, 73505, OK
Dr. Stephanie Sarita Harry
  • Gender: Female
  • Address: 11212 East 48th Street Tulsa, 74146, OK
Dr. John Schumann
  • Gender: Male
  • Address: 2130 Southwest 59th Street Oklahoma City, 73119, OK
Dr. Erik Allen Wallace
  • Gender: Male
  • Address: 2877 East Fountain Boulevard Colorado Springs, 80910, CO
Dr. Sai Atluri Md
  • Gender: Female
  • Address: 4502 East 41st Street Tulsa, 74135, OK
Dr. Roma Aatish Patel
  • Gender: Female
  • Address: 4444 E 41ST ST Tulsa, 74135, OK
Dr. Christine Wilson
  • Gender: Female
  • Address: 6465 South Yale Avenue Suite 401 Tulsa, 74136, OK
Dr. Reeja John
  • Gender: Female
  • Address: 4502 East 41st Street Tulsa, 74135, OK
Dr. Brent W. Beasley
  • Gender: Male
  • Address: 16659 East 23rd Street South Independence, 64055, MO

Questions & Answers

Does Dr. John Gemma have affiliation with practices?

Dr. John Gemma is affiliated with Siggins Memorial Clinic.

What conditions does Dr. John Gemma treat?

Dr. John Gemma provides treatment for Acute Pain, Gastroesophageal Reflux Disease (GERD), Heart Disease, Hiatal Hernia, Influenza, Osteoporosis. For the full list see this list.

Does Dr. John Gemma accept insurance?

Dr. John Gemma is listed in-network for 40 ACA Marketplace (Obamacare/HealthCare.gov) plans from Blue Cross and Blue Shield of Oklahoma, Medica. See the Marketplace plans section for details.

Where can you meet with Dr. John Gemma?

Dr. John Gemma's office is located at 4502 East 41st Street in Tulsa, OK 74135.

Has Dr. John Gemma affiliation with hospitals?

Dr. John Gemma is affiliated with ST JOHN MEDICAL CENTER, INC.