Marcia Williams-Hailey, NP
NPI 1831288547 · Psychiatric/Mental Health Nurse Practitioner · Valley Stream, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcia Williams-Hailey, NP is a Psychiatric/Mental Health Nurse Practitioner provider in Valley Stream, NY (NPI 1831288547).
Provider details
- NPI number
- 1831288547
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- Yes
- License
- F401104-1 (NY)
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
19 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)
- 451 Clarkson AveBrooklyn, NY 11203-2057Phone: (718) 245-2749Fax: (718) 245-2720
Registry dates
- Enumerated
- 2006-10-12
- Last updated
- 2018-04-16
Frequently asked questions
- What is Marcia Williams-Hailey's NPI number?
- Marcia Williams-Hailey's National Provider Identifier (NPI) is 1831288547, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcia Williams-Hailey's specialty?
- Marcia Williams-Hailey is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marcia Williams-Hailey located?
- Marcia Williams-Hailey's practice location on file with NPPES is 900 Franklin Ave, Valley Stream, NY 11580-2145.
- What is Marcia Williams-Hailey's phone number?
- The practice phone number listed in the NPPES registry for Marcia Williams-Hailey is (516) 256-6025.
- Does Marcia Williams-Hailey accept Medicare?
- Marcia Williams-Hailey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcia Williams-Hailey's NPI active?
- Yes — Marcia Williams-Hailey's NPI (1831288547) is active in the NPPES registry as of the last update on 2018-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.