IndividualActive
Michael Harris, LMSW
NPI 1639831399 · Social Worker · Holtsville, NY
Michael Harris, LMSW is a Social Worker provider in Holtsville, NY (NPI 1639831399).
Provider details
- NPI number
- 1639831399
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 113941 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(61/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
755 Waverly Ave Ste 216
Holtsville, NY 11742-1125
Phone: (631) 487-8181
Street-level locationGet directions
Mailing address
15 Brookfield Ln
South Setauket, NY 11720-1444
Registry dates
- Enumerated
- 2021-10-11
- Last updated
- 2021-10-11
- Certified
- 2021-10-11
Frequently asked questions
- What is Michael Harris's NPI number?
- Michael Harris's National Provider Identifier (NPI) is 1639831399, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Harris's specialty?
- Michael Harris is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Michael Harris located?
- Michael Harris's practice location on file with NPPES is 755 Waverly Ave Ste 216, Holtsville, NY 11742-1125.
- What is Michael Harris's phone number?
- The practice phone number listed in the NPPES registry for Michael Harris is (631) 487-8181.
- Is Michael Harris's NPI active?
- Yes — Michael Harris's NPI (1639831399) is active in the NPPES registry as of the last update on 2021-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.