Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Gregory I Young, PHD

Clinical Child & Adolescent Psychologist in Brighton, MA · enumerated 2011.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1255619540

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory I Young

Credential PHD

Sex Male

Practice address Brighton, MA, 02135

Phone (617) 254-3800

Enumeration date Aug 3, 2011

Last updated in NPPES Jul 22, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
110026265	Medicaid	MA	-

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for Gregory Young?

The National Provider Identifier (NPI) for Gregory Young is 1255619540, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregory Young practice?

The practice location on file with NPPES is in Brighton, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Wendy Cheney Pediatric Dentistry · Brighton, MA NPI 1063418085 Jeffrey Forman Physical Medicine & Rehabilitation Physician · Brighton, MA NPI 1942206503 Mary Ann Mullin Clinical Psychologist · Brighton, MA NPI 1588661557 Virginia Kharasch Pediatric Pulmonology Physician · Brighton, MA NPI 1477553923 Didem Inanoglu Physical Medicine & Rehabilitation Physician · Boston, MA NPI 1255324422 Varuna Tuli Pediatrics Physician · Boston, MA NPI 1558355818 Joseph Oren Pediatrics Physician · Brighton, MA NPI 1740278050 Shauna Downey Pediatrics Physician · Brighton, MA NPI 1558342410

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-22.