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Dr. James B. Karol, M.D.

Specialist in Oakland, CA · enumerated 2005.

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

National Provider Identifier

1306840954

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Registry record

Entity type Individual (Type 1)
Name Dr. James B. Karol
Credential M.D.
Sex Male
Practice address 3300 Webster St, Ste 710, Oakland, CA, 94609
Phone (510) 465-5800
Fax (510) 839-8984
Enumeration date Jun 10, 2005
Last updated in NPPES Feb 15, 2019

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License MD-45912 (IA) Secondary
174400000X Specialist Other Service Providers · License A26178 (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
00A261780 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

What is the NPI number for James Karol?
The National Provider Identifier (NPI) for James Karol is 1306840954, a Type 1 (individual) record in the CMS NPPES registry.
Where does James Karol practice?
The practice location on file with NPPES is in Oakland, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-02-15.