Dr. Benjamin Potter, MD

Gastroenterology (Gastroenterology Physician)

Cumberland County includes primary care (5% of residents) shortage areas. About shortage areas

Medicare participating

Medical school: Geisel School of Medicine at Dartmouth (1992)
Years since graduation: 34
In the NPI registry since: 2006
Medicare patients seen, 2024: 314

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

1992Medical school: Geisel School of Medicine at Dartmouth
2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

Gastroenterology Physician primary
ME license 013831

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Gastroenterology per capita by county →

Where they work

Hospitals

Mainehealth Maine Medical Center Portland, ME

Medical groups

Portland Gastroenterology Associates PA (22 clinicians)

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024: 314
Services billed: 6,285
Patients’ average age: 72

Most frequent Medicare services, 2023
Service	Times	Patients
Pathology examination of tissue using a microscope, intermediate complexity	281	124
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	111	110
Biopsy of large bowel using a flexible endoscope	76	76
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	59	58
Removal of polyps or growths of large bowel using an endoscope with mechanical snare	45	44
Established patient office or other outpatient visit, 20-29 minutes	41	39
Colorectal cancer screening; colonoscopy on individual at high risk	37	37
Established patient office or other outpatient visit, 30-39 minutes	35	34
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	32	32
Diagnostic exam of large bowel using a flexible endoscope	22	22

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
Drug	Prescriptions
Gavilyte-G (peg3350/sod sulf,bicarb,cl/kcl) Other prescribers in Portland, ME	92
Omeprazole Other prescribers in Portland, ME	61
Famotidine Other prescribers in Portland, ME	53
Mesalamine Other prescribers in Portland, ME	25
Peg-3350 And Electrolytes (peg3350/sod sulf,bicarb,cl/kcl) Other prescribers in Portland, ME	15
Humira(Cf) Pen (adalimumab) Other prescribers in Portland, ME	13

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 2 companies reported 3 payments worth $79.56 in total to this clinician.

By company
Fujifilm Healthcare Americas Corporation	$70.12
Advanced Oxygen Therapy Inc.	$9.44

By type
Food and Beverage	$79.56

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Maine →

At a glance