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

Margaret Thumm, FNP

Individual provider Family Nurse Practitioner · NPI 1164548897

Margaret Thumm, FNP is a Family Nurse Practitioner in Portland, Maine. Licensed in Maine. Registered with an NPI since 2007.

Licensed in
ME
In the registry since
2007
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

20 Portland St
Portland, ME 04101-2912
Phone: (207) 874-8445
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence R031482 (ME)

Record details

NPI number1164548897
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedMarch 22, 2007
Last updated in NPPESJuly 9, 2007
Mailing address389 Congress St, Rm 307, Portland, ME 04101-3509

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