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

Dr. Nathan Alphonso Graddy, D.D.S

Dentist in Port Richey, FL · enumerated 2011.

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

National Provider Identifier

1225318025

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Registry record

Entity type Individual (Type 1)

Name Dr. Nathan Alphonso Graddy

Credential D.D.S

Sex Male

Practice address Port Richey, FL, 34668

Phone (727) 846-7555

Enumeration date Aug 24, 2011

Last updated in NPPES Dec 27, 2019

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License DN4964 (FL) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier	Type	State	Issuer
072704100	Medicaid	FL	-

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 1225318025 active?

Yes, as of the latest NPPES snapshot, NPI 1225318025 is active (record last updated 2019-12-27).

How do I verify Nathan Graddy's NPI record?

Cross-check NPI 1225318025 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Richard Paternoster Dentist · Port Richey, FL NPI 1043483480 Mariana Boles Dentist · Port Richey, FL NPI 1255745428

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-27.