Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Priya O'Callaghan, D.D.S.

Endodontics in Oakland, CA · enumerated 2007.

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

National Provider Identifier

1912030420

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Registry record

Entity type Individual (Type 1)

Name Dr. Priya O'Callaghan

Credential D.D.S.

Sex Female

Practice address 1700 Broadway, 10th Floor, Oakland, CA, 94612

Phone (510) 451-6828

Enumeration date Mar 13, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223E0200X Endodontics Dental Providers · License CA45882 (CO) 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

What is the NPI number for Priya O'Callaghan?

The National Provider Identifier (NPI) for Priya O'Callaghan is 1912030420, a Type 1 (individual) record in the CMS NPPES registry.

Where does Priya O'Callaghan practice?

The practice location on file with NPPES is in Oakland, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Joseph Schulz Endodontics · Oakland, CA NPI 1902923154 Stephanie Kingsley Registered Nurse · Oakland, CA NPI 1386807196 Annie Tien Mental Health Counselor · Oakland, CA NPI 1992019749 Sean Becton Mental Health Counselor · Oakland, CA NPI 1538463336 Genevieve Mauricio Mental Health Counselor · Oakland, CA NPI 1710281514 Nidhi Sharma Mental Health Counselor · Oakland, CA NPI 1316226400 Sama Ibrahimi Counselor · Oakland, CA NPI 1811231756 Lifelong Medical Care Case Management Agency · Oakland, CA NPI 1538502398

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