Margaret Crosswell Harousseau, P.A.
NPI 1104063049 · Surgical Physician Assistant · Scarsdale, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Crosswell Harousseau, P.A. is a Surgical Physician Assistant provider in Scarsdale, NY (NPI 1104063049).
Provider details
- NPI number
- 1104063049
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 013056 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 6 Greenwich Office ParkGreenwich, CT 06831-5151Phone: (203) 869-1145Fax: (203) 618-1721
Registry dates
- Enumerated
- 2009-01-14
- Last updated
- 2020-04-22
- Certified
- 2020-04-22
Frequently asked questions
- What is Margaret Crosswell Harousseau's NPI number?
- Margaret Crosswell Harousseau's National Provider Identifier (NPI) is 1104063049, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Crosswell Harousseau's specialty?
- Margaret Crosswell Harousseau is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Crosswell Harousseau located?
- Margaret Crosswell Harousseau's practice location on file with NPPES is 35 Claremont Rd, Scarsdale, NY 10583-1103.
- What is Margaret Crosswell Harousseau's phone number?
- The practice phone number listed in the NPPES registry for Margaret Crosswell Harousseau is (914) 472-0363.
- Does Margaret Crosswell Harousseau accept Medicare?
- Margaret Crosswell Harousseau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Crosswell Harousseau's NPI active?
- Yes — Margaret Crosswell Harousseau's NPI (1104063049) is active in the NPPES registry as of the last update on 2020-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.