NPI Portal NPI Lookup & Verification

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

Dr. Warren Jason Wisnoff, DO

Internal Medicine Physician in Bakersfield, CA · enumerated 2006 · practices at Todd Farrer MD Inc.

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

National Provider Identifier

1619956927

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Registry record

Entity type Individual (Type 1)
Name Dr. Warren Jason Wisnoff
Credential DO
Sex Male
Practice address Bakersfield, CA, 93308
Phone (661) 843-7830
Fax (661) 843-7831
Enumeration date Jan 13, 2006
Last updated in NPPES Sep 1, 2023

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

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 20A9093 (CA) Secondary
207RH0002X Hospice and Palliative Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 20A9093 (CA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A9093 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
00AX90930 Medicaid CA -
AN893Z Other CA MEDICARE PTAN-SOUTHWEST
AN893Y Other CA MEDICARE PTAN-URGENT CARE

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

Where does Warren Wisnoff practice?
The practice location on file with NPPES is in Bakersfield, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Warren Wisnoff?
The National Provider Identifier (NPI) for Warren Wisnoff is 1619956927, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-01.