IndividualActive
Mark Antonellis
NPI 1255153227 · Counselor · Boston, MA
Mark Antonellis is a Counselor provider in Boston, MA (NPI 1255153227).
Provider details
- NPI number
- 1255153227
- Entity type
- Individual
- Primary specialty
- CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Basic profile(49/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% 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
10 Guest St
Boston, MA 02135-2066
Phone: (617) 469-8500
Street-level locationGet directions
Mailing address
17 Monique Dr
Bellingham, MA 02019-1019
Registry dates
- Enumerated
- 2024-10-30
- Last updated
- 2024-10-30
- Certified
- 2024-10-29
Frequently asked questions
- What is Mark Antonellis's NPI number?
- Mark Antonellis's National Provider Identifier (NPI) is 1255153227, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Antonellis's specialty?
- Mark Antonellis is listed in the NPPES registry with a primary specialty of Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Antonellis located?
- Mark Antonellis's practice location on file with NPPES is 10 Guest St, Boston, MA 02135-2066.
- What is Mark Antonellis's phone number?
- The practice phone number listed in the NPPES registry for Mark Antonellis is (617) 469-8500.
- Is Mark Antonellis's NPI active?
- Yes — Mark Antonellis's NPI (1255153227) is active in the NPPES registry as of the last update on 2024-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.