Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Andreas Stefan, MD

Individual provider Gastroenterology Physician · NPI 1831299460

Andreas Stefan, MD is a Gastroenterology in Portland, Maine. Graduated from University of Minnesota Medical School in 1991, 35 years ago. Practices with Portland Gastroenterology Associates PA, a 22-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maine.

Years since qualifying
35
Trained at
University of Minnesota Medical School
Licensed in
ME
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

161 Marginal Way
Portland, ME 04101-2438
Phone: (207) 773-7964
Fax: (207) 773-9073
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 016112 (ME)

Record details

NPI number1831299460
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 24, 2006
Last updated in NPPESSeptember 8, 2022
Certification dateSeptember 8, 2022
Mailing address161 Marginal Way, Portland, ME 04101-2438

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1991 (35 years in practice)
Group practice Portland Gastroenterology Associates Pa — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Portland