Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joan Mary Lewis, DDS,MSD

Periodontics in Clarkston, MI · enumerated 2006.

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

National Provider Identifier

1255394706

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Registry record

Entity type Individual (Type 1)

Name Dr. Joan Mary Lewis

Credential DDS,MSD

Sex Female

Practice address 5649 Sashabaw Rd, Clarkston, MI, 48346

Phone (248) 625-1721

Fax (248) 625-5475

Enumeration date Apr 7, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223P0300X Periodontics Dental Providers · License 2901014530 (MI) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Joan Lewis's NPI record?

Cross-check NPI 1255394706 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1255394706 active?

Yes, as of the latest NPPES snapshot, NPI 1255394706 is active (record last updated 2007-07-08).

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