Mariah Massie, FNP
NPI 1083309017 · Family Nurse Practitioner · Gaithersburg, MD
Mariah Massie, FNP is a Family Nurse Practitioner provider in Gaithersburg, MD (NPI 1083309017).
Provider details
- NPI number
- 1083309017
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- R223451 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-04-06
- Last updated
- 2023-04-06
- Certified
- 2023-03-31
Frequently asked questions
- What is Mariah Massie's NPI number?
- Mariah Massie's National Provider Identifier (NPI) is 1083309017, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariah Massie's specialty?
- Mariah Massie is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariah Massie located?
- Mariah Massie's practice location on file with NPPES is 826 Muddy Brand Road, Gaithersburg, MD 20879.
- What is Mariah Massie's phone number?
- The practice phone number listed in the NPPES registry for Mariah Massie is (240) 937-5335.
- Is Mariah Massie's NPI active?
- Yes — Mariah Massie's NPI (1083309017) is active in the NPPES registry as of the last update on 2023-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.