Christopher Grassia

Christopher Grassia is a Behavior Technician provider (Behavior Technician) practicing in Stoneham, MA, registered in the NPPES registry with NPI 1679019293 since 2017.

✓ Active NPI ✓ Valid NPI checksum

NPI	1679019293
Entity type	Individual (Type 1)
Name	Christopher Grassia
Sex	Male
Practice address	100 LEISURE LN APT 22, Stoneham, MA, 02180
Phone	3392237371
Enumeration date	2017-01-07
Last updated in NPPES	2017-01-07

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
106S00000X	Behavior Technician	Primary	—	—

Copy-ready billing details

Provider: Christopher Grassia
NPI: 1679019293
Taxonomy: 106S00000X (Behavior Technician)
Address: 100 LEISURE LN APT 22, Stoneham, MA, 02180

Verify this record

Cross-check NPI 1679019293 against the authoritative CMS record: view Christopher Grassia 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 Christopher Grassia?

Christopher Grassia is registered in NPPES with the primary taxonomy of Behavior Technician. 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 2017-01-07.