Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Greg C Felthousen, DDS, MS

Periodontics in Salisbury, MD · enumerated 2006 · practices at Greg Felthousen, DDS, Ms, LLC.

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

National Provider Identifier

1417979733

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Registry record

Entity type Individual (Type 1)

Name Dr. Greg C Felthousen

Credential DDS, MS

Sex Male

Practice address 304 Dogwood Dr, Salisbury, MD, 21801

Phone (410) 548-1096

Fax (410) 219-5798

Enumeration date Jul 24, 2006

Last updated in NPPES Jul 28, 2009

Taxonomy & licenses

1223P0300X Periodontics Dental Providers · License 10511 (MD) 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.

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Frequently asked questions

Is NPI 1417979733 active?

Yes, as of the latest NPPES snapshot, NPI 1417979733 is active (record last updated 2009-07-28).

How do I verify Greg Felthousen's NPI record?

Cross-check NPI 1417979733 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Greg Felthousen, DDS, Ms, LLC Periodontics · Salisbury, MD NPI 1235360017

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-28.