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

Dr. Gary J Tereso, PHARM D

Pharmacotherapy Pharmacist in Springfield, MA · enumerated 2007.

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

National Provider Identifier

1821200031

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Registry record

Entity type Individual (Type 1)

Name Dr. Gary J Tereso

Credential PHARM D

Sex Male

Practice address Springfield, MA, 01199

Phone (413) 794-3940

Enumeration date May 3, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

1835P1200X Pharmacotherapy Pharmacist Pharmacy Service Providers · License 23722 (MA) Primary

1835P1200X Pharmacotherapy Pharmacist Pharmacy Service Providers · License 8865 (CT) Secondary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

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

Is NPI 1821200031 active?

Yes, as of the latest NPPES snapshot, NPI 1821200031 is active (record last updated 2007-07-08).

How do I verify Gary Tereso's NPI record?

Cross-check NPI 1821200031 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.