NPPES file of Aug 9, 2026

James Warren, M.D.

Vascular & Interventional Radiology Physician · Chico, CA

James Warren, M.D. is a vascular & interventional radiology physician with a practice address in Chico, California, and NPI 1134160393, issued on Jun 9, 2006. Check the license (California RHL145010, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134160393
Name
James Warren
Credential
M.D.
Primary taxonomy
Vascular & Interventional Radiology Physician 2085R0204X
License number
RHL145010 CA
Self-reported in NPPES; status is on the state search
Practice location
1702 Esplanade, Chico, CA 95926
Phone
(530) 898-0500
Enumerated
Jun 9, 2006
Record last updated
Jul 13, 2026
Fax
(530) 898-9647
Medicaid ID
00A635610 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest vascular & interventional radiology physician records → All 599 in California → Look up another NPI →

Also registered at 1702 Esplanade

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John Brannen, MDVascular & Interventional Radiology Physician1932383411
  2. John Burnham, M.D.Diagnostic Radiology Physician1851360168
  3. Garth Gregory, M.D.Diagnostic Radiology Physician1801858436
  4. Gregory Lauten, M.D.Diagnostic Radiology Physician1689637001
  5. Richard Livesay, M.D.Diagnostic Radiology Physician1194788109
  6. Kevin Nash, M.DDiagnostic Radiology Physician1811950827

Verify James Warren in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license RHL145010    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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James Warren among 599 vascular & interventional radiology physician records in California

James Warren, M.D. is one of 599 vascular & interventional radiology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 66% newer
  • In a Medicare fileNo · 88% of these records are
  • In the CMS Doctors and Clinicians fileNo · 83% of these records are
  • Record last updated2026 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0204X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Vascular & Interventional Radiology Physician providers in California

There are 599 vascular & interventional radiology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 599 in California → Every provider in Chico → Vascular & Interventional Radiology Physician nationwide →

The 8 vascular & interventional radiology physician records with the nearest ZIP codes

  1. John Brannen, MDChico, CA 959261932383411
  2. Pallav Shah, M.D.Chico, CA 959261326275306
  3. Brian Evans, M.D.Grass Valley, CA 959451518917582
  4. Adam Khalil, MDGrass Valley, CA 959451225448616
  5. Kristofer Langheinrich, MDYuba City, CA 959911093133597
  6. Darryl Demaris, M.D.Redding, CA 960011689069296
  7. Stephen Hofkin, M.D.Redding, CA 960011003836263
  8. Douglas Hughes, M.D.Redding, CA 960011841253010

Common questions

What is James Warren, M.D.'s NPI number?

James Warren, M.D.'s National Provider Identifier (NPI) is 1134160393, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is James Warren, M.D. located?

The NPPES record lists a practice address at 1702 Esplanade, Chico, CA, 95926. Phone: (530) 898-0500. Providers update this record themselves, so call before visiting.

How can I verify James Warren, M.D.'s license?

NPPES lists California license number RHL145010, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.