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Gastroenterologists in Harrisburg–Lancaster–York, PA

155 listed in Harrisburg–Lancaster–York, PA · Listings last verified November 2026 · How we vet listings

We list 155 gastroenterologists in the Harrisburg–Lancaster–York area, most of them in Hershey, Lancaster and York. All are physicians (MD or DO), shown with the practice's phone number, address and Google rating where we could match one. 8 practices say they offer telehealth visits. Use the filters to narrow by city, telehealth, Medicare or Medicaid.

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Nathan Yeasted, MD

Chambersburg Gastroenterology Associates

Gastroenterology

Practice rating 2.9 (35 Google reviews)

Address
835 5th Ave, Chambersburg 17201
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (717) 263-0629 Website Directions

Last verified Nov 2026 Report a correction

Patrick McDevitt, DO

US Digestive Health at Carlisle

Gastroenterology

Practice rating 4.7 (306 Google reviews)

Address
241 Alexander Spring Rd, Carlisle 17015
Telehealth
Not listed
Medicare
Not listed
Medicaid
Not listed
Call (717) 245-2228 Website Directions

Last verified Nov 2026 Report a correction

Paul G. Lacey, MD

Jackson Siegelbaum Gastroenterology

Gastroenterology

Practice rating 3.3 (30 Google reviews)

Address
4387 Sturbridge Dr, Harrisburg 17110
Telehealth
Practice offers telehealth
Medicare
Not listed
Medicaid
Not listed
Call (717) 238-3111 Website Directions

Last verified Nov 2026 Report a correction

In the Harrisburg–Lancaster–York area

Our Harrisburg–Lancaster–York listings cover south-central Pennsylvania: Dauphin County, Lancaster County, York County, Cumberland County, Lebanon County, Franklin County, Adams County and Northumberland County. This is a region of several small cities rather than one big one, so you may have a closer option than you expect.

Lancaster, Hershey, York and Harrisburg have the most listings. On the West Shore, Camp Hill, Mechanicsburg, Lemoyne and Wormleysburg add more. Chambersburg, Lebanon, Hanover, Carlisle and Gettysburg each have their own smaller groups.

Three large names appear across specialties: Penn State Health in Hershey, UPMC and WellSpan, including its Chambersburg offices. Lancaster General Health's physician groups appear in Lancaster. Independent practices such as Harrisburg Gastroenterology and Chambersburg Gastroenterology Associates work alongside them.

Liver specialists are scarce in this area, so we don't have a local page for them. A gastroenterologist can often manage liver disease and refer you on.

Hershey, Lancaster and York have the most gastroenterologists in this region. Named groups include UPMC Specialty Care Gastroenterology Associates, Harrisburg Gastroenterology, Chambersburg Gastroenterology Associates, Gastroenterology Associates of Central PA and US Digestive Health at Carlisle. Ask where your procedures would be done before you book.

Nearby: Allentown–Lehigh Valley, PA · Philadelphia, PA · Scranton–Wilkes-Barre, PA · Altoona–Johnstown, PA

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)