Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Diane L. Fountas M.D.

Pediatrics Physician in Waterbury, CT · enumerated 2007 · authorized official Tammy Carrasquillo, Office Manager.

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

National Provider Identifier

1639378086

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Registry record

Entity type Organization (Type 2)

Legal business name Diane L. Fountas M.D.

Practice address 1389 W Main St, Suite 325, Waterbury, CT, 06708

Phone (203) 753-6776

Enumeration date Jul 16, 2007

Last updated in NPPES Jul 16, 2007

Taxonomy & classification

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 024436 (CT) Primary

Authorized official

Name Tammy Carrasquillo

Title Office Manager

Phone (203) 753-6776

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 is Diane L. Fountas M.D. located?

The practice location on file with NPPES is in Waterbury, CT.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-07-16. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-16.