Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jose Leonel Ochoa-Bayona, M.D.

Hematology & Oncology Physician in Walnut Creek, CA · enumerated 2005.

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

National Provider Identifier

1669475158

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Registry record

Entity type Individual (Type 1)

Name Dr. Jose Leonel Ochoa-Bayona

Credential M.D.

Sex Male

Practice address 177 La Casa Via Ste 390, Walnut Creek, CA, 94598

Phone (925) 677-5041

Enumeration date May 27, 2005

Last updated in NPPES Jun 10, 2025

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License C171204 (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

What specialty is Jose Ochoa-Bayona?

Jose Ochoa-Bayona is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-10.