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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gabrielle S Schaefer, MD

Obstetrics & Gynecology Physician in Pleasanton, CA · enumerated 2006 · practices at University Healthcare Alliance.

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

National Provider Identifier

1427128016

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Registry record

Entity type Individual (Type 1)
Name Gabrielle S Schaefer
Credential MD
Sex Female
Practice address 5575 W Las Positas Blvd Ste 330, Pleasanton, CA, 94588
Phone (925) 734-3333
Fax (925) 734-9294
Enumeration date Nov 9, 2006
Last updated in NPPES Dec 17, 2021

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License A87289 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
00A872890 Medicaid CA -

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 do I verify Gabrielle Schaefer's NPI record?
Cross-check NPI 1427128016 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1427128016 active?
Yes, as of the latest NPPES snapshot, NPI 1427128016 is active (record last updated 2021-12-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-17.