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Gastroenterologists in Johnson City–Tri-Cities, TN

49 listed in Johnson City–Tri-Cities, TN · Listings last verified October 2026 · How we vet listings

We list 49 gastroenterologists in the Johnson City–Tri-Cities area, most of them in Kingsport, Bristol and Johnson City. All are physicians (MD or DO), shown with the practice's phone number, address and Google rating where we could match one. Use the filters to narrow by city, telehealth, Medicare or Medicaid.

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Adam W. Coe, MD

Gastroenterology Associates

Gastroenterology

Practice rating 3.5 (61 Google reviews)

Address
135 W Ravine Rd Suite 3a, Kingsport 37660
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 246-6777 Website Directions

Last verified Oct 2026 Report a correction

Chakradhar M. Reddy, MD

Gastrointestinal Associates of Northeast Tennessee, P.C.

Gastroenterology

Practice rating 4.7 (1,140 Google reviews)

Address
310 N State Of Franklin Rd Suite 202, Johnson City 37604
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 929-7111 Website Directions

Last verified Oct 2026 Report a correction

Dallas Shone, MD

HMG Gastroenterology at Medical Plaza

Gastroenterology

Practice rating 3.1 (28 Google reviews)

Address
105 W Stone Dr Ste 4c, Kingsport 37660
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 578-1595 Website Directions

Last verified Oct 2026 Report a correction

David B. Welch, MD

Gastrointestinal Associates of Northeast Tennessee, P.C.

Gastroenterology

Practice rating 4.7 (1,140 Google reviews)

Address
310 N State Of Franklin Rd Ste 202, Johnson City 37604
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 929-7111 Website Directions

Last verified Oct 2026 Report a correction

Dhara J. Chaudhari, MD

Gastrointestinal Associates of Northeast Tennessee, P.C.

Gastroenterology

Practice rating 4.7 (1,140 Google reviews)

Address
310 N State Of Franklin Rd Ste 202, Johnson City 37604
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 929-7111 Website Directions

Last verified Oct 2026 Report a correction

Douglas E. Homoky, MD

Gastroenterology Associates

Gastroenterology

Practice rating 3.5 (61 Google reviews)

Address
135 W Ravine Rd Suite 3a, Kingsport 37660
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 246-6777 Website Directions

Last verified Oct 2026 Report a correction

Douglas J. Springer, MD

Gastroenterology Associates

Gastroenterology

Practice rating 3.5 (61 Google reviews)

Address
135 W Ravine Rd Suite 3a, Kingsport 37660
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 246-6777 Website Directions

Last verified Oct 2026 Report a correction

Erika L. Grigg, MD

Gastroenterology Associates

Gastroenterology

Practice rating 3.5 (61 Google reviews)

Address
135 W Ravine Rd Suite 3a, Kingsport 37660
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 246-6777 Website Directions

Last verified Oct 2026 Report a correction

Fredric R. Mishkin, MD

Gastroenterology Associates

Gastroenterology

Practice rating 3.5 (61 Google reviews)

Address
135 W Ravine Rd Suite 3a, Kingsport 37660
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 246-6777 Website Directions

Last verified Oct 2026 Report a correction

Gerald F. London, MDFACP

Gastroenterology Associates

Gastroenterology

Practice rating 3.5 (61 Google reviews)

Address
135 W Ravine Rd Suite 3a, Kingsport 37660
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (423) 246-6777 Website Directions

Last verified Oct 2026 Report a correction

In the Johnson City–Tri-Cities area

Our Johnson City–Tri-Cities listings cover the Tennessee side of the Tri-Cities: Sullivan County, Washington County, Greene County, Carter County and Hawkins County. That includes Bristol, Tennessee, but not Bristol, Virginia, or other towns across the state line.

Specialist care here runs mostly through Ballad Health and ETSU Health, the practice of East Tennessee State University's medical school. Frontier Health is the main community mental health provider. Holston Medical Group and independent groups such as Gastrointestinal Associates of Northeast Tennessee practice alongside them.

Johnson City and Kingsport have the most listings, followed by Bristol. Mountain Home, next to Johnson City, is home to the James H. Quillen VA Medical Center, which serves veterans. If you live in Greene, Carter or Hawkins County, check Greeneville, Elizabethton or Rogersville before driving to the larger towns.

Gastroenterologists in the Tri-Cities include Gastrointestinal Associates of Northeast Tennessee, Gastroenterology Associates, Holston Medical Group and Tri-Cities Gastroenterology. Offices are spread across Kingsport, Bristol and Johnson City. Many groups run their own endoscopy centers, so ask where your colonoscopy would be done.

Nearby: Knoxville, TN · Chattanooga, TN

How to choose a gastroenterologist

A gastroenterologist, or GI doctor, diagnoses and treats problems of the digestive tract: the esophagus, stomach, intestines, colon, liver, pancreas and gallbladder. People see one for heartburn that won't go away, ongoing belly pain, diarrhea or constipation, bleeding, Crohn's disease or ulcerative colitis, and for colonoscopies.

Start with the kind of care you need. Many GI doctors handle a wide range of problems, but some focus on one area:

  • General gastroenterologists handle most needs: reflux, ulcers, irritable bowel syndrome, screening colonoscopies and follow-up on abnormal tests.
  • Inflammatory bowel disease (IBD) specialists manage Crohn's disease and ulcerative colitis over the long term.
  • Advanced endoscopists do complex scope procedures, such as removing large polyps or treating bile duct and pancreas problems.
  • Hepatologists focus on the liver. Many are gastroenterologists with extra liver training.

If you're not sure, a general gastroenterologist is the right first stop. They'll refer you on if you need a subspecialist.

Check credentials. Board certification in gastroenterology shows a doctor has finished specialty training and passed a certification exam. You can look up any doctor's certification for free on the American Board of Internal Medicine website [1]. Our listings show the credentials doctors report in the federal NPI registry, but we don't verify board certification.

Know if you're due for a colonoscopy. Experts recommend colorectal cancer screening for adults ages 45 to 75 [2]. A colonoscopy is one option. Some people can start with a stool test instead. Ask your primary care doctor which test fits you, and whether your family history means you should start earlier.

Confirm insurance before you book. Practices change the plans they accept, so call the office or check your insurer's directory. HMO plans usually need a referral first. Medicare Part B covers medically necessary specialist visits; you typically pay 20% of the Medicare-approved amount after your deductible [5].

Ask where procedures are done. Colonoscopies and other scopes happen in a hospital or a separate endoscopy center. The location can change what you pay, so ask before you schedule.

Know when not to wait. Vomiting blood or material that looks like coffee grounds, black or tar-like stool, or feeling faint, confused or cold and clammy with belly symptoms need emergency care, not an appointment [4]. Call 911.

Frequently asked questions

Do I need a referral to see a gastroenterologist?

It depends on your insurance. Most HMO plans require a referral from your primary care doctor before they'll cover a specialist visit. PPO plans and traditional Medicare usually don't. Some GI practices also want a referral or recent test results before they book you, especially for a procedure, so call ahead and ask what to bring.

At what age should I get a colonoscopy?

The U.S. Preventive Services Task Force recommends colorectal cancer screening for adults ages 45 to 75. A colonoscopy is one way to screen, and stool tests are another. People with a family history of colon cancer, certain polyps or inflammatory bowel disease may need to start earlier or screen more often. Ask your doctor what's right for you.

Does Medicare cover a screening colonoscopy?

Yes. Medicare Part B covers a screening colonoscopy once every 120 months for most people, or once every 24 months if you're at high risk. There's no minimum age. You pay nothing for the screening if your doctor accepts assignment. If a polyp is removed during the test, you may owe a share of the cost.

What happens at a first GI appointment?

Expect questions about your symptoms, diet, bowel habits, medications and family history, plus a physical exam. The doctor may order blood work, a stool test, imaging or a scope procedure such as an upper endoscopy or colonoscopy. Bring a list of your medications and any recent lab results, scans or procedure reports.

How do I know if a gastroenterologist is board certified?

Look the doctor up on the American Board of Internal Medicine's free "Verify a Physician" tool, which shows whether they're certified in gastroenterology. Our listings show the credentials doctors report to the NPI registry, but we don't verify certification ourselves.

Sources

  1. American Board of Internal Medicine — Verify a physician's certification
  2. U.S. Preventive Services Task Force — Colorectal cancer screening
  3. Medicare.gov — Colonoscopies (screening)
  4. NIDDK — Symptoms and causes of GI bleeding
  5. Medicare.gov — Doctor & other health care provider services (Part B)