Mark A. Bronstein, M.D.
Ophthalmology Physician · Fountain Valley, CA
Mark A. Bronstein, M.D. is an ophthalmology physician with a practice address in Fountain Valley, California, and NPI 1750457404, issued on Nov 27, 2006. Check the license (California G44667, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark A. Bronstein
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G44667 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11180 Warner Ave #163, Fountain Valley, CA 92708
- Phone
- (714) 751-1188
- Enumerated
- Nov 27, 2006
- Record last updated
- Feb 22, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (714) 751-2403
- Medicaid ID
- 0162028 CA
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Verify Mark A. Bronstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G44667Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average ophthalmology physician in 2024
16 Medicare Part D claims, against an average of 1,518 among the 16,459 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 97.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Mark A. Bronstein among 2,899 ophthalmology physician records in California
Mark A. Bronstein, M.D. 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 updated2012 · 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 Fountain Valley → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Arpine BarsegianFountain Valley, CA 927081780070649
- Benjamin Bert, M.D.Fountain Valley, CA 927081518129964
- Brian Francis, M.D.Fountain Valley, CA 927081427118348
- Vicki Lin, M.D.Fountain Valley, CA 927081326146937
- Lincoln Manzi, MD, INCFountain Valley, CA 927081376592188
- Trung Nguyen, M.D.Fountain Valley, CA 927081316941966
- Tri Nguyen, M.D.Fountain Valley, CA 927081669436002
- Elizabeth Nguyen, D.O.Fountain Valley, CA 927081689891640
Common questions
What is Mark A. Bronstein, M.D.'s NPI number?
Mark A. Bronstein, M.D.'s National Provider Identifier (NPI) is 1750457404, issued on Nov 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Bronstein, M.D. located?
The NPPES record lists a practice address at 11180 Warner Ave #163, Fountain Valley, CA, 92708. Phone: (714) 751-1188. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Bronstein, M.D.'s license?
NPPES lists California license number G44667, 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 Mark A. Bronstein, M.D. prescribe under Medicare Part D?
In 2024, Mark A. Bronstein, M.D. had 16 Medicare Part D claims; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Mark A. Bronstein, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.