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

Dr. John Keith Spitznagel Jr., D.D.S., PH.D.

Periodontics in Parkton, MD · enumerated 2008.

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

National Provider Identifier

1255500807

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Registry record

Entity type Individual (Type 1)

Name Dr. John Keith Spitznagel Jr.

Credential D.D.S., PH.D.

Sex Male

Practice address Parkton, MD, 21120

Phone (443) 465-4745

Enumeration date Feb 28, 2008

Last updated in NPPES Feb 28, 2008

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

Taxonomy & licenses

1223P0300X Periodontics Dental Providers · License 13864 (MD) Primary

1223P0300X Periodontics Dental Providers · License DS037003 (PA) Secondary

1223P0300X Periodontics Dental Providers · License 15287 (MA) Secondary

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

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

What is the NPI number for John Spitznagel?

The National Provider Identifier (NPI) for John Spitznagel is 1255500807, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-28.