Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Harold L Jacobson III, D.D.S.
Endodontics in El Cajon, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1114041993
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Registry record
Entity type Individual (Type 1)
Name Dr. Harold L Jacobson III
Credential D.D.S.
Sex Male
Practice address 360 Highland Ave, El Cajon, CA, 92020
Phone (619) 442-6664
Enumeration date Mar 19, 2007
Last updated in NPPES Jun 28, 2026
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
Where does Harold Jacobson practice?
The practice location on file with NPPES is in El Cajon, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Harold Jacobson?
The National Provider Identifier (NPI) for Harold Jacobson is 1114041993, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-28.