Jacob Mattleman, LICSW
NPI 1366022535 · Clinical Social Worker · Boston, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jacob Mattleman, LICSW is a Clinical Social Worker provider in Boston, MA (NPI 1366022535).
Provider details
- NPI number
- 1366022535
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Male
- Sole proprietor
- No
- License
- LICSW127374 (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
5 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
- 2021-04-12
- Last updated
- 2023-12-27
- Certified
- 2023-12-27
Frequently asked questions
- What is Jacob Mattleman's NPI number?
- Jacob Mattleman's National Provider Identifier (NPI) is 1366022535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jacob Mattleman's specialty?
- Jacob Mattleman is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Jacob Mattleman located?
- Jacob Mattleman's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Jacob Mattleman's phone number?
- The practice phone number listed in the NPPES registry for Jacob Mattleman is (617) 355-6000.
- Does Jacob Mattleman accept Medicare?
- Jacob Mattleman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jacob Mattleman's NPI active?
- Yes — Jacob Mattleman's NPI (1366022535) is active in the NPPES registry as of the last update on 2023-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.