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

William M Heinz, MD

Individual provider Sports Medicine (Internal Medicine) Physician · NPI 1164423117

William M Heinz, MD is a Sports Medicine (Internal Medicine) Physician in Portland, Maine. Licensed in Maine. Registered with an NPI since 2005.

Licensed in
ME
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

33 Sewall St
Portland, ME 04102
Phone: (207) 828-2100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0010X · Licence MD12812 (ME)

Record details

NPI number1164423117
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 2, 2005
Last updated in NPPESNovember 10, 2015

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