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

Dr. Frank Nicholas Diaferio III, PHARMD

Pharmacist in Waterbury, CT · enumerated 2017.

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

National Provider Identifier

1689190753

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Registry record

Entity type Individual (Type 1)
Name Dr. Frank Nicholas Diaferio III
Credential PHARMD
Sex Male
Practice address Waterbury, CT, 06708
Enumeration date Aug 20, 2017
Last updated in NPPES Jul 21, 2022

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

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License PCT.0014220 (CT) Primary
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.

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Frequently asked questions

Where does Frank Diaferio practice?
The practice location on file with NPPES is in Waterbury, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Frank Diaferio?
The National Provider Identifier (NPI) for Frank Diaferio is 1689190753, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.