Mr. Mark Yessin, CAGS

Mr. Mark Yessin is a Behavior Analyst provider (Behavior Analyst) practicing in Centerville, MA, registered in the NPPES registry with NPI 1700180353 since 2010. Practices at Justice Resource Institute (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1700180353
Entity type	Individual (Type 1)
Name	Mr. Mark Yessin
Credential	CAGS
Sex	Male
Practice address	889 W MAIN ST, Centerville, MA, 02632
Phone	5087712402
Fax	5087621291
Enumeration date	2010-12-22
Last updated in NPPES	2010-12-22

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103K00000X	Behavior Analyst	Primary	—	—

Copy-ready billing details

Provider: Mark Yessin, CAGS
NPI: 1700180353
Taxonomy: 103K00000X (Behavior Analyst)
Address: 889 W MAIN ST, Centerville, MA, 02632

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1437487600	Craig Cote	Individual	Counselor	Centerville, MA
1033440383	Courtney Beauchamp	Individual	Behavior Analyst	Centerville, MA
1932430105	Jessica Newell	Individual	Mental Health Counselor	Centerville, MA
1609196237	Selby Bourne	Individual	Clinical Social Worker	Centerville, MA
1194028290	Justice Resource Institute	Organization	Community/Behavioral Health Agency	Centerville, MA
1265713978	Leslie Colton	Individual	Counselor	Centerville, MA
1952647596	Jacquelyn Hutton	Individual	Behavior Analyst	Centerville, MA
1154664092	Caitlin Mcconnell	Individual	Behavior Analyst	Centerville, MA

Verify this record

Cross-check NPI 1700180353 against the authoritative CMS record: view Mr. Mark Yessin on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Yessin?

Mark Yessin is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-12-22.