Leon G. Partamian, M.D.
Ophthalmology Physician · Ventura, CA
Leon G. Partamian, M.D. is an ophthalmology physician with a practice address in Ventura, California, and NPI 1700808904, issued on Jul 24, 2006. Check the license (California C40265, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Leon G. Partamian
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- C40265 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3085 Loma Vista RD, Ventura, CA 93003
- Phone
- (805) 648-3085
- Enumerated
- Jul 24, 2006
- Record last updated
- Dec 8, 2022
- Medicare enrollment
- Enrolled (PECOS I20060114000109); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 3085 Loma Vista RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Batchelor, O.D.Optometrist1922312081
- Vladislav Bekerman, MDOphthalmology Physician1285138362
- Kathleen Beuttler, M.D.Ophthalmology Physician1669416103
- Michael Boggs, O.D.Optometrist1447287503
- Mark Brunette, O.D.Optometrist1538105846
- Steven Carter, MDOphthalmology Physician1275038267
Verify Leon G. Partamian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C40265Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% more Medicare Part D claims than the average ophthalmology physician in 2024
2,692 Medicare Part D claims for 514 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Latanoprost759 claims
- Dorzolamide-Timolol439 claims
- Brimonidine Tartrate332 claims
- Dorzolamide Hcl194 claims
- Timolol Maleate180 claims
- Prednisolone Acetate134 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 83.8 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).
Industry payments in 2024: $435.04
10 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Miramar Eye Specialists Medical Group IncVentura, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leon G. Partamian among 2,899 ophthalmology physician records in California
Leon G. Partamian, 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 fileYes · 66% of these records are
- Graduated1978 · median 2001 among the 1,907 with a school on file
- Record last updated2022 · 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 Ventura → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Kathleen Beuttler, M.D.Ventura, CA 930031669416103
- Steven Chang, M.D.Ventura, CA 930031174598239
- Joel Corwin, M.D.Ventura, CA 930031518901651
- John Davidson, M.D.Ventura, CA 930031205870748
- John Fang, M.D.Ventura, CA 930031467461574
- Emily Fant, M.D.Ventura, CA 930031447346416
- Donald Frambach, M.D.Ventura, CA 930031205870474
- Thomas Lee, MDVentura, CA 930031275620353
Common questions
What is Leon G. Partamian, M.D.'s NPI number?
Leon G. Partamian, M.D.'s National Provider Identifier (NPI) is 1700808904, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leon G. Partamian, M.D. located?
The NPPES record lists a practice address at 3085 Loma Vista RD, Ventura, CA, 93003. Phone: (805) 648-3085. Providers update this record themselves, so call before visiting.
How can I verify Leon G. Partamian, M.D.'s license?
NPPES lists California license number C40265, 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 Leon G. Partamian, M.D. prescribe under Medicare Part D?
In 2024, Leon G. Partamian, M.D. had 2,692 Medicare Part D claims for 514 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Leon G. Partamian, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.8 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.