Overview
Mark Nightengale is a Gastroenterologist in Tahlequah, Oklahoma. Dr. Nightengale is highly rated in 22 conditions, according to our data. His top areas of expertise are Lower Esophageal Ring, Benign Esophageal Stricture, Hepatitis B, Gastrectomy, and Colonoscopy.
Insurance
Please contact the provider to confirm they accept your insurance or if you don't see your insurance listed.
Accepted insurance plans
- Cigna
- Medica
- UnitedHealthcare
- Humana
Locations
100 S Bliss Ave, Tahlequah, OK 74464
6465 S Yale Ave, Suite 1002, Tulsa, OK 74136
4150 Se Adams Rd, Bartlesville, OK 74006
Additional Areas of Focus
Dr. Nightengale has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
MediFind cannot find any recent clinical research or clinical trials for Dr. Mark Nightengale
Northeastern Health System
William Simpson is a Gastroenterologist in Tahlequah, Oklahoma. Dr. Simpson is highly rated in 58 conditions, according to our data. His top areas of expertise are Lower Esophageal Ring, Benign Esophageal Stricture, Esophageal Varices, Endoscopy, and Gastrectomy.
River Valley Gastroenterology
Hrair Simonian is a Gastroenterologist in Fort Smith, Arkansas. Dr. Simonian is highly rated in 82 conditions, according to our data. His top areas of expertise are Lower Esophageal Ring, Benign Esophageal Stricture, Chronic Erosive Gastritis, Gastrectomy, and Colonoscopy.
Warren Clinic Inc
Ajay Sangal is a Gastroenterologist in Muskogee, Oklahoma. Dr. Sangal is highly rated in 27 conditions, according to our data. His top areas of expertise are Lower Esophageal Ring, Benign Esophageal Stricture, Gastritis, Gastrectomy, and Gastrostomy.
Areas of Expertise
When evaluating expertise, MediFind pulls from factors such as the number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
To learn more about how MediFind determines the expertise levels, check out our expert tiers page.
- Distinguished
- Benign Esophageal Stricture
- Lower Esophageal Ring
- Advanced
- Childhood Volvulus
- Chronic Erosive Gastritis
- Diarrhea
- Esophagitis
- Familial Adenomatous Polyposis
- Gardner Syndrome
- Experienced
- Achalasia
- Acute Pancreatitis
- Anemia
- Angiodysplasia of the Colon
- Ascites
- Bacterial Gastroenteritis