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James Warren, M.D.
NPI 1164459533 · Diagnostic Radiology Physician · Pomona, CA
James Warren, M.D. is a Diagnostic Radiology Physician provider in Pomona, CA (NPI 1164459533).
Provider details
- NPI number
- 1164459533
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A31265 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
1902 Royalty Dr
Pomona, CA 91767-3056
Phone: (714) 573-7647
Street-level locationGet directions
Mailing address
26 Roseville
Irvine, CA 92602-2030
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2009-09-02
Frequently asked questions
- What is James Warren's NPI number?
- James Warren's National Provider Identifier (NPI) is 1164459533, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Warren's specialty?
- James Warren is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is James Warren located?
- James Warren's practice location on file with NPPES is 1902 Royalty Dr, Pomona, CA 91767-3056.
- What is James Warren's phone number?
- The practice phone number listed in the NPPES registry for James Warren is (714) 573-7647.
- Is James Warren's NPI active?
- Yes — James Warren's NPI (1164459533) is active in the NPPES registry as of the last update on 2009-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.