Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Katherine Virginia Gray, M.D.

Orthopaedic Hand Surgery Physician in San Jose, CA · enumerated 2007 · practices at Kaiser Foundation Health Plan Inc.

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

National Provider Identifier

1265631741

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Registry record

Entity type Individual (Type 1)

Name Dr. Katherine Virginia Gray

Credential M.D.

Sex Female

Practice address San Jose, CA, 95119

Phone (408) 972-6703

Enumeration date Jul 13, 2007

Last updated in NPPES Feb 11, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207XS0106X Orthopaedic Hand Surgery Physician Allopathic & Osteopathic Physicians · License A82331 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Where does Katherine Gray practice?

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

What is the NPI number for Katherine Gray?

The National Provider Identifier (NPI) for Katherine Gray is 1265631741, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-11.