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

Dr. Daniel M Merson, DO

Individual provider Internal Medicine Physician · NPI 1982652129

Dr. Daniel M Merson, DO is an Internal Medicine in Portland, Maine. Graduated from Massachusetts College of Osteopathy in 1987, 39 years ago. Practices with Mercy Hospital, a 308-clinician group and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
39
Trained at
Massachusetts College of Osteopathy
Licensed in
ME
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1250 Forest Ave
Portland, ME 04103-1884
Phone: (207) 878-5042
Fax: (207) 878-5043
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence ME1373 (ME)

Record details

NPI number1982652129
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 4, 2006
Last updated in NPPESOctober 16, 2008

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolMASSACHUSETTS COLLEGE OF OSTEOPATHY
Graduated 1987 (39 years in practice)
Group practice Mercy Hospital — 308 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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