Dr. Johnasan M. Gregory
- Gender: Male
- Experience: 37 years
- Graduated from: University Of Texas Medical School At San Antonio
- Graduation year: 1984
- Sole propriator: No
- NPI: 1699774869
Dr. Johnasan M. Gregory M.D.
Gastroenterologist
He is located at 300 North Highland Avenue Suite 340 in Sherman, TX 75092. Can help patients with the following: Autoimmune Hepatitis, Heart Disease, Hepatitis B (HBV), Hot Flashes, Irritable Bowel Syndrome (IBS), Pancreatic Cancer. His National Provider Identifier (NPI) number is 1699774869. Appointment can be made via the phone number (903) 957-0233. He is affiliated with 2 practices and 2 hospitals.
Conditions treated
Dr. Johnasan M. Gregory, being an gastroenterologist, 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. Johnasan M. Gregory.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Ascites
- Asthma
- Atherosclerosis
- Autoimmune Hepatitis
- Bad Breath
- Barrett's Esophagus
- Bladder Control
- Bleeding Varices
- Blood in Stool
- Botulism
- Cancer
- Carcinoid Tumor
- Celiac Disease
- Chest Pain
- Childhood Obesity
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Cirrhosis
- Clostridium Difficile Colitis
- Colitis
- Colonoscopy
- Common Cold
- Constipation
- Crohn's Disease
- Cystitis
- Diarrhea
- Diverticulosis
- Edema
- Eosinophilic Esophagitis
- Esophagitis
- Fatty Liver Disease
- Feeding and Swallowing
- Fever
- Food Allergies
- Gallbladder Pain
- Gastric Bypass Surgery
- Gastritis
- Gastroesophageal Reflux Disease (GERD)
- Gastroparesis
- General Care
- Headache
- Heart Disease
- Heartburn
- Helicobacter Pylori Infection
- Hemorrhoids
- Hepatitis A (HAV)
- Hepatitis B (HBV)
- Hepatitis C (HCV)
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Indigestion
- Inflammatory Bowel Disease (IBD)
- Influenza
- Inguinal Hernia
- Internal Bleeding
- Intussusception
- Irritable Bowel Syndrome (IBS)
- Lactose Intolerance
- Leaky Gut Syndrome
- Liver Disease
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Pancreas Divisum
- Pancreatic Cancer
- Pancreatic Cysts
- Pancreatitis
- Peptic Ulcer
- Portal Hypertension
- Prescription Refill
- Primary Biliary Cirrhosis (PBC)
- Primary Sclerosing Cholangitis (PSC)
- Stomach Cancer
- Swallowing Disorders
- Ulcerative Colitis
- Urethritis
- Urinary Tract Infection (UTI)
Procedures Performed by Dr. Johnasan M. Gregory
Insurances Accepted by Dr. Johnasan M. Gregory
- Medicare
Medicare Enrollment
Dr. Johnasan M. Gregory is enrolled to bill Medicare as a Practitioner - Gastroenterology (also registered under: Practitioner - Internal Medicine) .
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.
Payments received
Drug payment
| Salix Pharmaceuticals a division of Bausch Health US LLC | $182 |
| AbbVie | $66 |
| Valeant Pharmaceuticals North America | $52 |
Other
| Food and Beverage | $361 |
Studies
UNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated in 1984Additional Specialities
- Internist
- Specialist
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Questions & Answers
Where can you meet with Dr. Johnasan M. Gregory?
Dr. Johnasan M. Gregory's office is located at 300 North Highland Avenue Suite 340 in Sherman, TX 75092.
Does Dr. Johnasan M. Gregory accept patients with Medicare?
Yes, Dr. Johnasan M. Gregory accepts patients with Medicare.
Has Dr. Johnasan M. Gregory affiliation with hospitals?
Dr. Johnasan M. Gregory is affiliated with GOOD SHEPHERD MEDICAL CENTER MARSHALL. For the full list of hospitals see this list.
Does Dr. Johnasan M. Gregory have affiliation with practices?
Dr. Johnasan M. Gregory is affiliated with Grayson Digestive Health. For the full list of practices see this list.
What conditions does Dr. Johnasan M. Gregory treat?
Dr. Johnasan M. Gregory provides treatment for Autoimmune Hepatitis, Heart Disease, Hepatitis B (HBV), Hot Flashes, Irritable Bowel Syndrome (IBS), Pancreatic Cancer. For the full list see this list.