Mark Leone, LICSW
NPI 1164914388 · Clinical Social Worker · Boston, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Leone, LICSW is a Clinical Social Worker provider in Boston, MA (NPI 1164914388).
Provider details
- NPI number
- 1164914388
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Male
- Sole proprietor
- No
- License
- 120604 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
8 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
- 2018-06-04
- Last updated
- 2021-09-02
- Certified
- 2021-09-02
Frequently asked questions
- What is Mark Leone's NPI number?
- Mark Leone's National Provider Identifier (NPI) is 1164914388, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Leone's specialty?
- Mark Leone is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Leone located?
- Mark Leone's practice location on file with NPPES is 55 Fruit St Ste Yawkey9e, Boston, MA 02114-2696.
- What is Mark Leone's phone number?
- The practice phone number listed in the NPPES registry for Mark Leone is (617) 643-6438.
- Does Mark Leone accept Medicare?
- Mark Leone is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Leone's NPI active?
- Yes — Mark Leone's NPI (1164914388) is active in the NPPES registry as of the last update on 2021-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.