NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Andrew O Schreiber M D Inc

Neurological Surgery Physician in Santa Ana, CA · enumerated 2010 · authorized official Gretchen Bergquist, Office Manager.

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

National Provider Identifier

1598069809

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Andrew O Schreiber M D Inc
Practice address 1535 E 17th St Ste 101, Santa Ana, CA, 92705
Fax (888) 838-3749
Enumeration date Dec 29, 2010
Last updated in NPPES Sep 6, 2023

Taxonomy & classification

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License G57315 (CA) Primary

Authorized official

Name Gretchen Bergquist
Title Office Manager

Other identifiers

Identifier Type State Issuer
1679662852 Other CA TYPE 1 NPI

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-09-06. Verify at npiregistry.cms.hhs.gov.
Where is Andrew O Schreiber M D Inc located?
The practice location on file with NPPES is in Santa Ana, CA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-06.