Thomas A. O'Callaghan

Thomas A. O'Callaghan is a healthcare organization registered as Personal Emergency Response Attendant in Riverside, CA, holding Type 2 (organization) NPI 1760587992 since 2006. The authorized official on file is Thomas O'Callaghan, Surgeon.

✓ Active NPI ✓ Valid NPI checksum

NPI	1760587992
Entity type	Organization (Type 2)
Legal business name	Thomas A. O'Callaghan
Practice address	4646 BROCKTON AVE, SUITE 301-1A, Riverside, CA, 92506
Phone	9517842866
Enumeration date	2006-09-13
Last updated in NPPES	2020-08-22

Authorized official

Name	Thomas O'Callaghan
Title	Surgeon
Phone	9097949039

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
146D00000X	Personal Emergency Response Attendant	Primary	42550	CA

Copy-ready billing details

Provider: Thomas A. O'Callaghan
NPI: 1760587992
Taxonomy: 146D00000X (Personal Emergency Response Attendant)
Address: 4646 BROCKTON AVE, SUITE 301-1A, Riverside, CA, 92506

Providers at this address

NPI	Name	Type	Specialty	Location
1730187881	Gary Feinberg	Individual	Plastic Surgery within the Head & Neck (Otolaryngology) Physician	Riverside, CA
1669470639	Raincross Outpatient Pharmacy Inc	Organization	Community/Retail Pharmacy	Riverside, CA
1942293394	Feluryne Timple	Individual	Family Nurse Practitioner	Riverside, CA
1861489098	Suman Agarwal	Individual	Family Medicine Physician	Riverside, CA
1194712315	Raincross Medical Group Inc	Organization	Family Medicine Physician	Riverside, CA
1912994146	Keith Curtis	Individual	Family Medicine Physician	Riverside, CA
1073500294	Carl Knopke	Individual	Family Medicine Physician	Riverside, CA
1174510309	John Branch	Individual	Family Medicine Physician	Riverside, CA

Verify this record

Cross-check NPI 1760587992 against the authoritative CMS record: view Thomas A. O'Callaghan on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where is Thomas A. O'Callaghan located?

The practice location on file with NPPES is in Riverside, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2020-08-22.