Dr. John M. Williams
- Gender: Male
- Experience: 45 years
- Graduated from: Duke University School Of Medicine
- Graduation year: 1976
- Sole propriator: No
- NPI: 1700869401
Dr. John M. Williams MD
Surgeon
He is located at 115 Heart Drive in Greenville, NC 27834. Can help patients with the following: Anal Fissure, Cancer, Gangrene, Heart Disease, Hernia, Ventricular Septal Defect (VSD). His National Provider Identifier (NPI) number is 1700869401. Appointment can be made via the phone number (252) 744-4400. He is affiliated with 3 practices and 1 hospitals.
Conditions treated
Dr. John Mark Williams, being an surgeon, 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 M. Williams.
- Achalasia
- Anal Fissure
- Aortic Dissection
- Aortic Stenosis
- Appendicitis
- Boils
- Cancer
- Collapsed Lung
- Colon Cancer
- Crohn's Disease
- Cyst
- Diverticulosis
- Enlarged Spleen
- Esophageal Cancer
- Gallstones
- Gangrene
- Heart Disease
- Hemorrhoids
- Hernia
- Inflammatory Bowel Disease (IBD)
- Lymphedema
- Pancreatitis
- Peptic Ulcer
- Pilonidal Cyst
- Sebaceous Cyst
- Thoracic Outlet Syndrome (TOS)
- Ulcerative Colitis
- Ventricular Septal Defect (VSD)
Procedures Performed by Dr. John M. Williams
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. John M. Williams as in-network for the following 2026 plans.
Health plans
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 |
| Connect Bronze 6500 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze CMS Standard | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze RD 5000 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze RD 6000 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze RD CMS Standard | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Gold 1500 Indiv Med Deductible | HMO · Gold | Preferred | Accepting new patients |
| Connect Gold CMS Standard | HMO · Gold | Preferred | Accepting new patients |
| Connect Gold RD CMS Standard | HMO · Gold | Preferred | Accepting new patients |
| Connect myDiabetesCare Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect myDiabetesCare Silver | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver 3600 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver 5000 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver CMS Standard | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver RD 3500 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver RD 5000 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver RD CMS Standard | HMO · 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 M. Williams 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 M. Williams is enrolled to bill Medicare as a Practitioner - Thoracic Surgery (also registered under: Practitioner - Cardiac Surgery) .
Bills through: Vidant Medical Group Llc
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
| Covidien | $113 |
| St. Jude Medical | $65 |
| AstraZeneca | $26 |
Other
| Food and Beverage | $242 |
Studies
DUKE UNIVERSITY SCHOOL OF MEDICINE
Graduated in 1976Additional Specialities
- Cardiothoracic Surgeon
Affiliated practices
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- Address: 517 Moye Boulevard Greenville, 27834, NC
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Questions & Answers
Has Dr. John Mark Williams affiliation with hospitals?
Dr. John Mark Williams is affiliated with VIDANT MEDICAL CENTER.
What conditions does Dr. John Mark Williams treat?
Dr. John Mark Williams provides treatment for Anal Fissure, Cancer, Gangrene, Heart Disease, Hernia, Ventricular Septal Defect (VSD). For the full list see this list.
Does Dr. John Mark Williams have affiliation with practices?
Dr. John Mark Williams is affiliated with Vidant Medical Center. For the full list of practices see this list.
Does Dr. John Mark Williams accept patients with Cigna Healthcare?
Yes, Dr. John Mark Williams 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 Mark Williams?
Dr. John Mark Williams's office is located at 115 Heart Drive in Greenville, NC 27834.