Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John A Testa, MD

Q: What is the NPI number for John Testa?

The National Provider Identifier (NPI) for John Testa is 1609835735, a Type 1 (individual) record in the CMS NPPES registry.

Internal Medicine Physician in Prospect, CT · enumerated 2006.

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

National Provider Identifier

1609835735

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Registry record

Entity type Individual (Type 1)

Name John A Testa

Credential MD

Sex Male

Practice address 166 Waterbury Rd, Ste 300, Prospect, CT, 06712

Phone (203) 758-0878

Fax (203) 758-0877

Enumeration date Mar 18, 2006

Last updated in NPPES Oct 28, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 040224 (CT) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
3V0866	Other	CT	HEALTHNET/COMMERCIAL
010040224CT03	Other	CT	ANTHEM BCBS CT
276436	Other	CT	WELLCARE
P01047925	Other	CT	RR MEDICARE
P3945105	Other	CT	OXFORD
02208443	Other	CT	UHC
040224	Other	CT	CONNECTICARE
1402247	Medicaid	CT	-
7853384	Other	CT	AETNA

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

Where does John Testa practice?

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

What is the NPI number for John Testa?

The National Provider Identifier (NPI) for John Testa is 1609835735, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-28.