MARGARET FARRELL PSY.D.
NPI 1780906438
Psychologist - Clinical in Rockville, MD
About Margaret Farrell Psy.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET FARRELL PSY.D. (NPI 1780906438) is an individual clinical provider in Rockville, Maryland, licensed in Maryland (05481) and active in the NPI registry since February 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Margaret Farrell Psy.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Margaret Farrell reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 44 clinicians in this Medicare group
Arlington, VA 22203
- Reassigned Medicare billing, District of Columbia enrollment
- 1,534 clinicians in this Medicare group
Glen Burnie, MD 21061
- Reassigned Medicare billing, District of Columbia enrollment
- 26 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20850 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ROCKVILLE, MD 20850
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Margaret Farrell's NPI number?
The NPI number for Margaret Farrell is 1780906438. It was assigned to this individual provider in the NPPES registry on February 23, 2010.
Where is Margaret Farrell located?
Margaret Farrell practices at 9707 Key West Ave Ste 100, Rockville, MD 20850. The listed phone number is (240) 750-6467.
What is Margaret Farrell's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Margaret Farrell enrolled in Medicare?
Yes. Margaret Farrell is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Margaret Farrell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Farrell reassigns Medicare benefits to 3 organizations: Quince Orchard Psychotherapy LLC (Rockville, MD), Privia Medical Group, LLC (Arlington, VA) and Oasis The Mental Health Center, LLC (Glen Burnie, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Margaret Farrell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Margaret Farrell was last updated on February 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Margaret Farrell, PSY.D. · NPI 1780906438
Clinical provider in Rockville, Maryland. Individual provider, active in the CMS NPPES registry since February 23, 2010.
## Identity
- **NPI:** 1780906438 (Entity type: Individual)
- **Enumerated:** February 23, 2010
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** 05481 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9707 KEY WEST AVE STE 100, Rockville, MD 20850-3992
- **Phone:** (240) 750-6467
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Quince Orchard Psychotherapy LLC (NPI 1336670389, Rockville, MD); Privia Medical Group, LLC (NPI 1013042480, Arlington, VA); Oasis The Mental Health Center, LLC (NPI 1174606057, Glen Burnie, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** February 1, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1780906438) · Data from the CMS NPPES public registry.