IndividualActive
James Karol, M.D.
NPI 1306840954 · Specialist · Oakland, CA
James Karol, M.D. is a Specialist provider in Oakland, CA (NPI 1306840954).
Provider details
- NPI number
- 1306840954
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD-45912 (IA)
Specialties & taxonomies
Other Service Providers
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(95/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
3300 Webster St
Ste 710
Oakland, CA 94609-3122
Phone: (510) 465-5800
Fax: (510) 839-8984
Street-level locationGet directions
Mailing address
3300 Webster St
Oakland, CA 94609-3122
Additional practice locations (1)
- 5950 University Ave Ste 341West Des Moines, IA 50266-8289Phone: (515) 875-9800Fax: (515) 875-9804
Registry dates
- Enumerated
- 2005-06-10
- Last updated
- 2019-02-15
Frequently asked questions
- What is James Karol's NPI number?
- James Karol's National Provider Identifier (NPI) is 1306840954, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Karol's specialty?
- James Karol is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is James Karol located?
- James Karol's practice location on file with NPPES is 3300 Webster St, Oakland, CA 94609-3122.
- What is James Karol's phone number?
- The practice phone number listed in the NPPES registry for James Karol is (510) 465-5800.
- Is James Karol's NPI active?
- Yes — James Karol's NPI (1306840954) is active in the NPPES registry as of the last update on 2019-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.