James L. Bainer, MD
Ophthalmology Physician · Riverside, CA
James L. Bainer, MD is an ophthalmology physician with a practice address in Riverside, California, and NPI 1629137245, issued on Dec 8, 2006. Check the license (California G37983, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James L. Bainer
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G37983 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Magnolia Ave, Riverside, CA 92505
- Phone
- (909) 353-2000
- Enumerated
- Dec 8, 2006
- Record last updated
- Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 10800 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Maria Aguirre, MDPediatrics Physician1295806255
Verify James L. Bainer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G37983Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average ophthalmology physician in 2024
892 Medicare Part D claims for 255 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Latanoprost367 claims
- Dorzolamide-Timolol100 claims
- Timolol Maleate98 claims
- Cyclosporine84 claims
- Brimonidine Tartrate82 claims
- Fluorometholone34 claims
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.
James L. Bainer among 2,899 ophthalmology physician records in California
James L. Bainer, MD is one of 2,899 ophthalmology physician records with a practice address in California. 79% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2021 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Riverside → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Siobhan Gogan, MDRiverside, CA 925051992876932
- Vivienne Hau, M.D., PH.D.Riverside, CA 925051588850713
- Gary Huffaker, MDRiverside, CA 925051023177680
- Wei-Chuan Liu, M.D.Riverside, CA 925051619153079
- Babak Roobini, M.D.Riverside, CA 925051124260880
- Shahin Shahrokni, MDRiverside, CA 925051346398120
- Daniel Yau, MDRiverside, CA 925051437218021
- John Allavie, M.D.Riverside, CA 925061740242627
Common questions
What is James L. Bainer, MD's NPI number?
James L. Bainer, MD's National Provider Identifier (NPI) is 1629137245, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James L. Bainer, MD located?
The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (909) 353-2000. Providers update this record themselves, so call before visiting.
How can I verify James L. Bainer, MD's license?
NPPES lists California license number G37983, 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 James L. Bainer, MD prescribe under Medicare Part D?
In 2024, James L. Bainer, MD had 892 Medicare Part D claims for 255 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.