Margaret Farrell, PSY.D.
NPI 1780906438 · Clinical Psychologist · Rockville, MD
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Farrell, PSY.D. is a Clinical Psychologist provider in Rockville, MD (NPI 1780906438).
Provider details
- NPI number
- 1780906438
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 05481 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
16 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
- 2010-02-23
- Last updated
- 2025-02-01
- Certified
- 2025-02-01
Frequently asked questions
- What is Margaret Farrell's NPI number?
- Margaret Farrell's National Provider Identifier (NPI) is 1780906438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Farrell's specialty?
- Margaret Farrell is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Margaret Farrell located?
- Margaret Farrell's practice location on file with NPPES is 9707 Key West Ave Ste 100, Rockville, MD 20850-3992.
- What is Margaret Farrell's phone number?
- The practice phone number listed in the NPPES registry for Margaret Farrell is (240) 750-6467.
- Does Margaret Farrell accept Medicare?
- Margaret Farrell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Farrell's NPI active?
- Yes — Margaret Farrell's NPI (1780906438) is active in the NPPES registry as of the last update on 2025-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.