Gerard Emile Ardron, M.D.
Ophthalmology Physician · Sonora, CA
Gerard Emile Ardron, M.D. is an ophthalmology physician with a practice address in Sonora, California, and NPI 1689709982, issued on Feb 23, 2007. Check the license (California G66625, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gerard Emile Ardron
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G66625 CA
Self-reported in NPPES; status is on the state search - Practice location
- 940 Sylva LN Ste G, Sonora, CA 95370
- Phone
- (209) 532-2020
- Enumerated
- Feb 23, 2007
- Record last updated
- Apr 23, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid IDs
- 00G666250 CA
00G666251 CA - Medicare enrollment
- Enrolled (PECOS I20090123000523); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 940 Sylva LN Ste G
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Craig Adams, O.D.Optometrist1881720126
- Perry Haugen, M.D.Ophthalmology Physician1043345366
Verify Gerard Emile Ardron in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66625Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% more Medicare Part D claims than the average ophthalmology physician in 2024
2,732 Medicare Part D claims for 781 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Latanoprost936 claims
- Ketorolac Tromethamine379 claims
- Moxifloxacin352 claims
- Neomycin-Polymyxin-Dexameth211 claims
- Prednisolone Acetate170 claims
- Timolol Maleate139 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 MIPS final score for 2023 (Medicare payment program): 71.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $62.42
3 payments; by number, the most common kind was food and beverage; the largest payer was Genentech USA, 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
- Arthur N. Donaldson, M.D., Inc.Sonora, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerard Emile Ardron among 2,899 ophthalmology physician records in California
Gerard Emile Ardron, 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 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1988 · median 2001 among the 1,907 with a school on file
- Record last updated2015 · 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 Sonora → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Perry Haugen, M.D.Sonora, CA 953701043345366
- Thomas O'Neil, MDTracy, CA 953761831162999
- Jordan Usunov, MDTracy, CA 953761609939099
- Pamela Tsuchiya, M.D.Tracy, CA 953771962519652
- Marshall Contreras, M.D.Turlock, CA 953821760453096
- Rangram Chandran, MDModesto, CA 953561194714642
- Brent Lum, M.D.Modesto, CA 953561891954772
- Hany Michail, MDModesto, CA 953561275673709
Common questions
What is Gerard Emile Ardron, M.D.'s NPI number?
Gerard Emile Ardron, M.D.'s National Provider Identifier (NPI) is 1689709982, issued on Feb 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gerard Emile Ardron, M.D. located?
The NPPES record lists a practice address at 940 Sylva LN Ste G, Sonora, CA, 95370. Phone: (209) 532-2020. Providers update this record themselves, so call before visiting.
How can I verify Gerard Emile Ardron, M.D.'s license?
NPPES lists California license number G66625, 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 Gerard Emile Ardron, M.D. prescribe under Medicare Part D?
In 2024, Gerard Emile Ardron, M.D. had 2,732 Medicare Part D claims for 781 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Gerard Emile Ardron, M.D.'s MIPS final score?
The 2023 MIPS final score is 71.9 of 100. 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.