N. Marie Brennan
NPI 1124588124 · Professional Counselor · Washington, DC
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
N. Marie Brennan is a Professional Counselor provider in Washington, DC (NPI 1124588124).
Provider details
- NPI number
- 1124588124
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- PRC14887 (DC)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
- 2019-03-25
- Last updated
- 2019-03-25
Frequently asked questions
- What is N. Marie Brennan's NPI number?
- N. Marie Brennan's National Provider Identifier (NPI) is 1124588124, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is N. Marie Brennan's specialty?
- N. Marie Brennan is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is N. Marie Brennan located?
- N. Marie Brennan's practice location on file with NPPES is 801 Pennsylvania Ave Se, Washington, DC 20003-2167.
- What is N. Marie Brennan's phone number?
- The practice phone number listed in the NPPES registry for N. Marie Brennan is (202) 780-7847.
- Does N. Marie Brennan accept Medicare?
- N. Marie Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is N. Marie Brennan's NPI active?
- Yes — N. Marie Brennan's NPI (1124588124) is active in the NPPES registry as of the last update on 2019-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.