Marisa Hammock, PSY.D
NPI 1164701199 · Psychologist · West Islip, NY
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marisa Hammock, PSY.D is a Psychologist provider in West Islip, NY (NPI 1164701199).
Provider details
- NPI number
- 1164701199
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D
- Sex
- Female
- Sole proprietor
- Yes
- License
- 019131 (NY)
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
14 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
- 2011-08-09
- Last updated
- 2011-08-09
Frequently asked questions
- What is Marisa Hammock's NPI number?
- Marisa Hammock's National Provider Identifier (NPI) is 1164701199, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marisa Hammock's specialty?
- Marisa Hammock is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Marisa Hammock located?
- Marisa Hammock's practice location on file with NPPES is 203 Tahlulah Ln, West Islip, NY 11795-4611.
- What is Marisa Hammock's phone number?
- The practice phone number listed in the NPPES registry for Marisa Hammock is (516) 241-4693.
- Does Marisa Hammock accept Medicare?
- Marisa Hammock is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marisa Hammock's NPI active?
- Yes — Marisa Hammock's NPI (1164701199) is active in the NPPES registry as of the last update on 2011-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.