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.

See every abbreviation used in this directory →

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

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