Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Apex Research Group, LLC

Research Clinic/Center in Fair Oaks, CA · enumerated 2023 · authorized official Masaru Oshita, Chief Medical Officer.

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

National Provider Identifier

1740987551

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Registry record

Entity type Organization (Type 2)

Legal business name Apex Research Group, LLC

Practice address 12417 Fair Oaks Blvd Ste 550, Fair Oaks, CA, 95628

Phone (279) 529-2933

Fax (916) 536-6416

Enumeration date Feb 13, 2023

Last updated in NPPES Feb 13, 2023

Taxonomy & classification

261QR1100X Research Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Masaru Oshita

Title Chief Medical Officer

Phone (279) 529-2933

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.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-02-13. Verify at npiregistry.cms.hhs.gov.

Where is Apex Research Group, LLC located?

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

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-13.