Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Gregory S Matheny, D.C.
Chiropractor in Delmar, DE · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487787297
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Gregory S Matheny
Credential D.C.
Sex Male
Practice address 38650 Sussex Hwy, Unit 9, Delmar, DE, 19940
Phone (302) 846-3244
Fax (302) 846-3255
Enumeration date Mar 13, 2007
Last updated in NPPES Oct 19, 2009
Taxonomy & licenses
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC 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
Where does Gregory Matheny practice?
The practice location on file with NPPES is in Delmar, DE. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gregory Matheny?
The National Provider Identifier (NPI) for Gregory Matheny is 1487787297, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-19.