IndividualActive
Leo Sarkissian, MSW
NPI 1639644651 · Social Worker · Waltham, MA
Leo Sarkissian, MSW is a Social Worker provider in Waltham, MA (NPI 1639644651).
Provider details
- NPI number
- 1639644651
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 104968-SW-LICSW (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(67/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
The Arc of Massachusetts
217 South Street
Waltham, MA 02453
Phone: (781) 891-6270
Approximate (ZIP-level) locationGet directions
Mailing address
35 Pintail Rd
Walpole, MA 02081-4357
Registry dates
- Enumerated
- 2018-10-05
- Last updated
- 2018-10-05
Frequently asked questions
- What is Leo Sarkissian's NPI number?
- Leo Sarkissian's National Provider Identifier (NPI) is 1639644651, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leo Sarkissian's specialty?
- Leo Sarkissian is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Leo Sarkissian located?
- Leo Sarkissian's practice location on file with NPPES is The Arc of Massachusetts, Waltham, MA 02453.
- What is Leo Sarkissian's phone number?
- The practice phone number listed in the NPPES registry for Leo Sarkissian is (781) 891-6270.
- Is Leo Sarkissian's NPI active?
- Yes — Leo Sarkissian's NPI (1639644651) is active in the NPPES registry as of the last update on 2018-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.