Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jonathan Casimir Szymanowski, DMD,MMSC

Periodontics in Sacramento, CA · enumerated 2006.

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

National Provider Identifier

1164467148

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Registry record

Entity type Individual (Type 1)

Name Dr. Jonathan Casimir Szymanowski

Credential DMD,MMSC

Sex Male

Practice address 2 Scripps Dr, #303, Sacramento, CA, 95825

Phone (916) 929-5052

Fax (916) 929-5416

Enumeration date Jun 16, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223P0300X Periodontics Dental Providers · License 46331 (CA) 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.

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Frequently asked questions

How do I verify Jonathan Szymanowski's NPI record?

Cross-check NPI 1164467148 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1164467148 active?

Yes, as of the latest NPPES snapshot, NPI 1164467148 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.