William Messina, LCSW
NPI 1710051917 · Clinical Social Worker · New York, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Messina, LCSW is a Clinical Social Worker provider in New York, NY (NPI 1710051917).
Provider details
- NPI number
- 1710051917
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- R02865-1 (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
19 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
- 2006-11-20
- Last updated
- 2008-04-02
Frequently asked questions
- What is William Messina's NPI number?
- William Messina's National Provider Identifier (NPI) is 1710051917, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Messina's specialty?
- William Messina is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Messina located?
- William Messina's practice location on file with NPPES is 130 5th Ave, New York, NY 10011-4306.
- What is William Messina's phone number?
- The practice phone number listed in the NPPES registry for William Messina is (212) 591-0208.
- Does William Messina accept Medicare?
- William Messina is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Messina's NPI active?
- Yes — William Messina's NPI (1710051917) is active in the NPPES registry as of the last update on 2008-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.