Robert E. James, M.D.
Clinical Pathology/Laboratory Medicine Physician · Ventura, CA
Robert E. James, M.D. is a clinical pathology/laboratory medicine physician with a practice address in Ventura, California, and NPI 1063578227, issued on Dec 29, 2006. Check the license (California G40553, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert E. James
- Credential
- M.D.
- Primary taxonomy
- Clinical Pathology/Laboratory Medicine Physician 207ZP0105X
- License number
- G40553 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3291 Loma Vista RD, Ventura, CA 93003
- Phone
- (805) 652-6556
- Enumerated
- Dec 29, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (805) 652-6286
- Entity
- Type 1 · individual
8 nearest clinical pathology/laboratory medicine physician records → All 131 in California → Look up another NPI →
Also registered at 3291 Loma Vista RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brad Adler, M.D.Anatomic Pathology Physician1003979618
- Alejandro Andrade, M.D.Family Medicine Physician1770713190
- James Appel, MDFamily Medicine Physician1083939706
- David Araujo, M.D.Family Medicine Physician1114955994
- Maria Arizmendi, M.D.Pediatrics Physician1366641961
- Ralph Armstrong, M.D.Psychiatry Physician1518016443
Verify Robert E. James in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G40553Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average clinical pathology/laboratory medicine physician in 2024
30 Medicare Part D claims, against an average of 34 among the 37 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Robert E. James among 131 clinical pathology/laboratory medicine physician records in California
Robert E. James, M.D. is one of 131 clinical pathology/laboratory medicine physician records with a practice address in California. 36% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 55% newer
- In a Medicare fileYes · 36% of these records are
- In the CMS Doctors and Clinicians fileNo · 31% of these records are
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0105X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Pathology/Laboratory Medicine Physician providers in California
There are 131 clinical pathology/laboratory medicine physician records in California.
All 131 in California → Every provider in Ventura → Clinical Pathology/Laboratory Medicine Physician nationwide →
The 8 clinical pathology/laboratory medicine physician records with the nearest ZIP codes
- Rashida Soni, M.D.Ventura, CA 930031619034311
- Maryam Ahmadi, MDOrange, CA 928681003497678
- Jefferson Chan, M.D., PH.D.Orange, CA 928681871713271
- Richard S Newman, MDOrange, CA 928681043390214
- Dennis O'Malley, M.D.Aliso Viejo, CA 926561184681223
- Cynthia Douglas, M.D.San Luis Obispo, CA 934011760419873
- Michael Frost, M.D.San Luis Obispo, CA 934011982631016
- James Hannah, M.D.San Luis Obispo, CA 934011386670495
Common questions
What is Robert E. James, M.D.'s NPI number?
Robert E. James, M.D.'s National Provider Identifier (NPI) is 1063578227, issued on Dec 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert E. James, M.D. located?
The NPPES record lists a practice address at 3291 Loma Vista RD, Ventura, CA, 93003. Phone: (805) 652-6556. Providers update this record themselves, so call before visiting.
How can I verify Robert E. James, M.D.'s license?
NPPES lists California license number G40553, 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.
How much does Robert E. James, M.D. prescribe under Medicare Part D?
In 2024, Robert E. James, M.D. had 30 Medicare Part D claims; the average among clinical pathology/laboratory medicine physician prescribers was 34. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.