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

Mariah Massie, FNP

Individual provider Family Nurse Practitioner · NPI 1083309017

Mariah Massie, FNP is a Family Nurse Practitioner in Gaithersburg, Maryland. Licensed in Maryland. Registered with an NPI since 2023.

Licensed in
MD
In the registry since
2023
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

826 Muddy Brand Rd Spc 13
Gaithersburg, MD 20879
Phone: (240) 937-5335
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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 R223451 (MD)

Record details

NPI number1083309017
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedApril 6, 2023
Last updated in NPPESApril 6, 2023
Certification dateMarch 31, 2023

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