Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Thaddeus Ritter, D.M.D.

Q: What is the NPI number for John Ritter?

The National Provider Identifier (NPI) for John Ritter is 1457886186, a Type 1 (individual) record in the CMS NPPES registry.

Orthodontics and Dentofacial Orthopedics Dentistry in Saint Petersburg, FL · enumerated 2017.

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

National Provider Identifier

1457886186

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Registry record

Entity type Individual (Type 1)

Name Dr. John Thaddeus Ritter

Credential D.M.D.

Sex Male

Practice address 1280 38th Ave Ne, Saint Petersburg, FL, 33704

Phone (727) 410-0466

Enumeration date May 1, 2017

Last updated in NPPES Jan 4, 2022

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License DN23193 (FL) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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

What is the NPI number for John Ritter?

The National Provider Identifier (NPI) for John Ritter is 1457886186, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Ritter practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-04.