Dr. John T. Geneczko
- Gender: Male
- Experience: 43 years
- Graduated from: University Of Michigan Medical School
- Graduation year: 1978
- Sole propriator: No
- NPI: 1902875727
Dr. John T. Geneczko JR. M.D.
Gastroenterologist
He is located at 200 Trent Drive 3662 Dumc in Durham, NC 27710. Can help patients with the following: Eosinophilic Esophagitis, Gastric Bypass Surgery, General Care, Internal Bleeding, Irritable Bowel Syndrome (IBS), Leaky Gut Syndrome. His National Provider Identifier (NPI) number is 1902875727. Appointment can be made via the phone number (919) 684-1817. He is affiliated with 1 practices and 3 hospitals.
Conditions treated
Dr. John T. Geneczko, 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. John T. Geneczko.
- 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. John T. Geneczko
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. John T. Geneczko as in-network for the following 2026 plans.
Health plans
Ambetter of North Carolina
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 29 plans from Ambetter of North Carolina
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Clear Silver with $0 Insulin Options | HMO · Silver | Preferred | Not accepting new patients |
| Complete Gold | HMO · Gold | Preferred | Not accepting new patients |
| Complete Gold + Vision + Adult Dental | HMO · Gold | Preferred | Not accepting new patients |
| Complete Gold with Atrium Health | HMO · Gold | Preferred | Not accepting new patients |
| Complete Gold with Atrium Health + Vision + Adult Dental | HMO · Gold | Preferred | Not accepting new patients |
| Elite Bronze | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Elite Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Elite Bronze with Atrium Health | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Elite Bronze with Atrium Health + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Enhanced Asthma/COPD Care Silver with $0 Drug Options | HMO · Silver | Preferred | Not accepting new patients |
| Enhanced Asthma/COPD Care Silver with $0 Drug Options + Vision + Adult Dental | HMO · Silver | Preferred | Not accepting new patients |
| Everyday Bronze | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Everyday Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Everyday Bronze with Atrium Health | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Everyday Bronze with Atrium Health + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Focused Silver with Atrium Health | HMO · Silver | Preferred | Not accepting new patients |
| Focused Silver with Atrium Health + Vision + Adult Dental | HMO · Silver | Preferred | Not accepting new patients |
| Standard Expanded Bronze | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Standard Expanded Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Standard Expanded Bronze with Atrium Health | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Standard Expanded Bronze with Atrium Health + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Not accepting new patients |
| Standard Gold | HMO · Gold | Preferred | Not accepting new patients |
| Standard Gold + Vision + Adult Dental | HMO · Gold | Preferred | Not accepting new patients |
| Standard Gold with Atrium Health | HMO · Gold | Preferred | Not accepting new patients |
| Standard Gold with Atrium Health + Vision + Adult Dental | HMO · Gold | Preferred | Not accepting new patients |
| Standard Silver | HMO · Silver | Preferred | Not accepting new patients |
| Standard Silver + Vision + Adult Dental | HMO · Silver | Preferred | Not accepting new patients |
| Standard Silver with Atrium Health | HMO · Silver | Preferred | Not accepting new patients |
| Standard Silver with Atrium Health + Vision + Adult Dental | HMO · Silver | Preferred | Not accepting new patients |
Cigna Healthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 17 plans from Cigna Healthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Connect Bronze 5500 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Connect Bronze 6500 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Connect Bronze CMS Standard | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Connect Bronze RD 5000 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Connect Bronze RD 6000 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Connect Bronze RD CMS Standard | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Connect Gold 1500 Indiv Med Deductible | HMO · Gold | Preferred | Accepting new patients at some locations |
| Connect Gold CMS Standard | HMO · Gold | Preferred | Accepting new patients at some locations |
| Connect Gold RD CMS Standard | HMO · Gold | Preferred | Accepting new patients at some locations |
| Connect myDiabetesCare Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients at some locations |
| Connect myDiabetesCare Silver | HMO · Silver | Preferred | Accepting new patients at some locations |
| Connect Silver 3600 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients at some locations |
| Connect Silver 5000 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients at some locations |
| Connect Silver CMS Standard | HMO · Silver | Preferred | Accepting new patients at some locations |
| Connect Silver RD 3500 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients at some locations |
| Connect Silver RD 5000 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients at some locations |
| Connect Silver RD CMS Standard | HMO · Silver | Preferred | Accepting new patients at some locations |
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 T. Geneczko 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. John T. Geneczko is enrolled to bill Medicare as a Practitioner - Gastroenterology .
Bills through: Duke Health Integrated Practice 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
UNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated in 1978Additional Specialities
- Internist
Affiliated hospitals
Looking for more Gastroenterologists?
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- Address: 200 Duke Medical Center Durham, 27710, NC
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- Address: DUMC 3662 Durham, 27710, NC
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- Address: 40 Duke Medicine Circle Durham, 27710, NC
- Gender: Male
- Address: 111 Hospital Drive Utica, 13502, NY
- Gender: Female
- Address: 40 Duke Medicine Circle Durham, 27710, NC
- Gender: Male
- Address: 40 Duke Medicine Circle Durham, 27710, NC
- Gender: Female
- Address: 3480 Wake Forest Road Suite 500 Raleigh, 27609, NC
- Gender: Male
- Address: 1000 Duke Medical Center Durham, 27710, NC
- Gender: Male
- Address: 3913 Duke Medical Center Durham, 27710, NC
- Gender: Female
- Address: Suite 3107BOX 200 Duke Medical Center Durham, 27710, NC
Questions & Answers
What conditions does Dr. John T. Geneczko treat?
Dr. John T. Geneczko provides treatment for Eosinophilic Esophagitis, Gastric Bypass Surgery, General Care, Internal Bleeding, Irritable Bowel Syndrome (IBS), Leaky Gut Syndrome. For the full list see this list.
Has Dr. John T. Geneczko affiliation with hospitals?
Dr. John T. Geneczko is affiliated with DUKE UNIVERSITY HOSPITAL. For the full list of hospitals see this list.
Does Dr. John T. Geneczko have affiliation with practices?
Dr. John T. Geneczko is affiliated with Duke Health Center of Clayton.
Does Dr. John T. Geneczko accept patients with Cigna Healthcare?
Yes, Dr. John T. Geneczko is listed in-network for Cigna Healthcare through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Where can you meet with Dr. John T. Geneczko?
Dr. John T. Geneczko's office is located at 200 Trent Drive 3662 Dumc in Durham, NC 27710.