Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mr. Mark Antonellis Jr.

Individual provider Counselor · NPI 1255153227

Mr. Mark Antonellis Jr. is a Counselor in Boston, Massachusetts. Registered with an NPI since 2024.

In the registry since
2024

Practice location Address checks out

10 Guest St
Boston, MA 02135-2066
Phone: (617) 469-8500
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Counselor (primary) Taxonomy 101Y00000X

Record details

NPI number1255153227
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedOctober 30, 2024
Last updated in NPPESOctober 30, 2024
Certification dateOctober 29, 2024
Mailing address17 Monique Dr, Bellingham, MA 02019-1019

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