Gary Zalkin, LICSW
NPI 1164510897 · Clinical Social Worker · South Natick, MA
Gary Zalkin, LICSW is a Clinical Social Worker provider in South Natick, MA (NPI 1164510897).
Provider details
- NPI number
- 1164510897
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- SW10235221 (MA)
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
- 2006-10-10
- Last updated
- 2018-09-25
Frequently asked questions
- What is Gary Zalkin's NPI number?
- Gary Zalkin's National Provider Identifier (NPI) is 1164510897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Zalkin's specialty?
- Gary Zalkin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gary Zalkin located?
- Gary Zalkin's practice location on file with NPPES is 8 Pleasant St South, South Natick, MA 01760.
- What is Gary Zalkin's phone number?
- The practice phone number listed in the NPPES registry for Gary Zalkin is (508) 650-0501.
- Is Gary Zalkin's NPI active?
- Yes — Gary Zalkin's NPI (1164510897) is active in the NPPES registry as of the last update on 2018-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.