Gastroenterologists in New Hampshire
Data updated monthly · Last refresh October 2026
109 Gastroenterology providers practice in New Hampshire, including 44 (40%) offering telehealth. The largest concentration is in Lebanon. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
109providers
44telehealth
Lebanontop city
Gastroenterology by city in New Hampshire
Choose a city to see providers there.
Where Gastroenterologists in New Hampshire practice
From CMS Medicare enrollment records covering 69 of the 109 providers listed here (63%). Providers who do not bill Medicare are not included in these figures.
7%solo or small practice (under 10 clinicians)
13%mid-size group (10 to 99)
80%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Gastroenterologists | All clinicians in group | Main city |
| Dartmouth-Hitchcock Clinic | 30 | 1,445 | Lebanon |
| Mary Hitchcock Memorial Hospital | 27 | 1,269 | Manchester |
| Concord Hospital Inc. | 7 | 572 | Concord |
| Elliot Professional Services | 7 | 429 | Manchester |
| Atlantic Digestive Specialists PLLC | 7 | 17 | Somersworth |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Gastroenterologists affiliated |
| Mary Hitchcock Memorial Hospital | Lebanon | Nonprofit | 3 of 5 | 32 |
| Elliot Hospital | Manchester | Nonprofit | 2 of 5 | 20 |
| Cheshire Medical Center | Keene | Nonprofit | 4 of 5 | 16 |
| New London Hospital | New London | Nonprofit | 3 of 5 | 9 |
| Concord Hospital | Concord | Nonprofit | 3 of 5 | 8 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Gastroenterology providers in New Hampshire
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Angel Fernandez Segura, MDBedford, NH · $150 in drug and device payments (2025) ·
(603) 624-4450 Dr. Christopher Dainiak, M.D.Bedford, NH · $16 in drug and device payments (2025) · Telehealth ·
(603) 367-3064 Dr. Ergen Muso, D.O.Bedford, NH · $214 in drug and device payments (2025) · Telehealth ·
(603) 624-4450 Dr. Mark Silversmith, M.D.Bedford, NH · $463 in drug and device payments (2025) · Telehealth ·
(603) 624-4450 Dr. Burr Loew, MDConcord, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 228-1763 Dr. Irma Cruz-gonzalez, M.D.Concord, NH · $542 in drug and device payments (2025) ·
(603) 226-2200 Dr. Jennifer Di Nubila, D.O.Concord, NH · No drug or device payments recorded (2025) ·
(603) 228-1763 Dr. John Baier, MDConcord, NH · No drug or device payments recorded (2025) ·
(603) 228-1763 Dr. John Meadows, M.D.Concord, NH · No drug or device payments recorded (2025) ·
(603) 228-1763 Dr. Leyla Ghazi, M.D.Concord, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 228-1763 Dr. Michael Gilbert, M.D. Dr. Robert Chehade, M.D.Concord, NH · $6 in drug and device payments (2025) · Telehealth ·
(603) 228-1763 Dr. Robert Thomson, MDConcord, NH · $23 in drug and device payments (2025) · Telehealth ·
(603) 228-1763 Dr. Samrath Singh, M.D.Concord, NH · No drug or device payments recorded (2025) ·
(603) 228-1763 Dr. Sarah Hyder, M.D.Concord, NH · $4,105 in drug and device payments (2025) ·
(603) 226-2200 Dr. Knut Roalsvig, MDDerry, NH · No drug or device payments recorded (2025) ·
(603) 432-8802 Dr. Leon Mclean, MDDerry, NH · $44,904 in drug and device payments (2025) · Telehealth ·
(603) 432-8802 Dr. Steven Taylor, MDDerry, NH · No drug or device payments recorded (2025) ·
(603) 432-8802 Dr. Steven Tsistrakis, M.DDerry, NH · $284 in drug and device payments (2025) · Telehealth ·
(603) 432-8802 Dr. Hillary Tompkins, MDExeter, NH · $19,158 in drug and device payments (2025) ·
(603) 772-5528 Dr. Melanie Pascal, MDExeter, NH · No drug or device payments recorded (2025) ·
(603) 775-5528 Dr. Thomas Liu, M.D.Exeter, NH · No drug or device payments recorded (2025) ·
(603) 772-5528 Dr. Thomas Sherman, MDExeter, NH · No drug or device payments recorded (2025) ·
(603) 772-5528 Dr. Yuki Igari, MDHooksett, NH · No drug or device payments recorded (2025) ·
(603) 314-6900 Dr. Andrew Gorske, MDKeene, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 354-6534 Dr. Daniel Rath, M.D.Keene, NH · No drug or device payments recorded (2025) ·
(603) 354-5400 Dr. Frederick Spin, M.D.Keene, NH · No drug or device payments recorded (2025) ·
(603) 354-5454 Dr. Matthew Rockacy, M.D.Keene, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 354-6515 Dr. Otto Trinkl, M.D.Keene, NH · No drug or device payments recorded (2025) ·
(603) 354-5454 Dr. Suzannah Luft, MDKeene, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 354-6515 Dr. Arifa Toor, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5602 Dr. Audrey Calderwood, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5030 Dr. Bethany Reutemann, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5000 Dr. Brian Lacy, PH.D; M.DLebanon, NH · $30,985 in drug and device payments (2025) · Telehealth ·
(603) 650-5215 Dr. Corey Siegel, M.D.Lebanon, NH · $44,549 in drug and device payments (2025) · Telehealth ·
(603) 650-8101 Dr. David Klibansky, M.D.Lebanon, NH · No drug or device payments recorded (2025) ·
(603) 650-5000 Dr. Douglas Robertson, M.D.Lebanon, NH · No drug or device payments recorded (2025) ·
(603) 653-9450 Dr. Gary Levine, MDLebanon, NH · No drug or device payments recorded (2025) ·
(603) 650-6734 Dr. Hannah Systrom, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5000 Dr. Jeffrey Adler, M.D.Lebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5261 Dr. Joshua KirschenbaumLebanon, NH · No drug or device payments recorded (2025) ·
(603) 650-5000 Dr. Lauren Tormey, M.D.Lebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5261 Dr. Lawrence Levy, M.D.Lebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5145 Dr. Lee Kaplan, MD PHDLebanon, NH · $138,973 in drug and device payments (2025) ·
(603) 650-5000 Dr. Liam Zakko, M.D.Lebanon, NH · $1,295 in drug and device payments (2025) · Telehealth ·
(603) 650-5261 Dr. Lynn Butterly, M.D.Lebanon, NH · No drug or device payments recorded (2025) ·
(603) 653-9457 Dr. Mary Drinane, MDLebanon, NH · No drug or device payments recorded (2025) · Telehealth ·
(603) 650-5261 Conditions Gastroenterology providers in New Hampshire commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Gastroenterology providers. Individual practices vary, so confirm with the provider before booking.
- Acid reflux
- IBS
- Crohn disease
- Ulcerative colitis
- Celiac disease
- Colon cancer screening
Common questions
How many Gastroenterology providers are in New Hampshire?There are 109 Gastroenterology providers with active NPI records practicing in New Hampshire, according to federal NPPES data refreshed monthly.
Do Gastroenterology providers in New Hampshire offer telehealth?Yes. 44 of the 109 Gastroenterology providers in New Hampshire (about 40%) report offering telehealth services in CMS data.
Which cities in New Hampshire have the most Gastroenterology providers?Lebanon (27), Manchester (18), Concord (13) have the highest concentration of Gastroenterology providers in New Hampshire.
How many Gastroenterology providers in New Hampshire received drug or device company payments?46 of 109 Gastroenterology providers in New Hampshire (42%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Gastroenterology providers in New Hampshire treat?Gastroenterology providers commonly treat acid reflux, IBS, Crohn disease, ulcerative colitis, celiac disease and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Gastroenterologists in New Hampshire work in independent practices or large health systems?Among 69 Gastroenterologists in New Hampshire enrolled in Medicare, 7% bill through a solo or small practice with fewer than 10 clinicians, 13% through a mid-size group of 10 to 99, and 80% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Gastroenterologists in New Hampshire work at?According to CMS facility affiliation records, the New Hampshire hospitals where the most Gastroenterologists hold privileges are Mary Hitchcock Memorial Hospital in Lebanon; Elliot Hospital in Manchester; Cheshire Medical Center in Keene.
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