Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. G. William Keller, D.D.S.
Periodontics in Wilmington, DE · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1912120676
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Registry record
Entity type Individual (Type 1)
Name Dr. G. William Keller
Credential D.D.S.
Sex Male
Practice address 1110 N Bancroft Pkwy, Wilmington, DE, 19805
Phone (302) 652-3586
Fax (302) 652-1174
Enumeration date Apr 11, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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.
Frequently asked questions
How do I verify G. Keller's NPI record?
Cross-check NPI 1912120676 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1912120676 active?
Yes, as of the latest NPPES snapshot, NPI 1912120676 is active (record last updated 2007-07-08).
Other providers at this practice address
Browse all → Bradford Klassman Periodontics · Wilmington, DE NPI 1053391706 Robert Director Endodontics · Wilmington, DE NPI 1861424590 Endodontic Associates, P.A. Endodontics · Wilmington, DE NPI 1225187115 Delaware Periodontics, P.A. Periodontics · Wilmington, DE NPI 1356476279 Harold Dehaven Periodontics · Wilmington, DE NPI 1427266105
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.