William Clayton Cosman, M.D.
Ophthalmology Physician · Medina, NY
William Clayton Cosman, M.D. is an ophthalmology physician with a practice address in Medina, New York, and NPI 1326099789, issued on May 12, 2006. Check the license (New York 2393991, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William Clayton Cosman
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 2393991 NY
Self-reported in NPPES; status is on the state search - Practice location
- 500 Erie St S, Medina, NY 14103
- Phone
- (585) 798-2020
- Enumerated
- May 12, 2006
- Record last updated
- Jan 29, 2025
- Fax
- (585) 798-3365
- Medicaid ID
- 02773637 NY
- Medicare enrollment
- Enrolled (PECOS I20070205000227); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 2002
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,822 in New York → Look up another NPI →
Verify William Clayton Cosman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 2393991Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,369 Medicare Part D claims for 441 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Latanoprost314 claims
- Dorzolamide-Timolol161 claims
- Timolol Maleate114 claims
- Lumigan103 claims
- Prednisolone Acetate99 claims
- Cyclosporine63 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): 100 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: $3,785.52
43 payments; by number, the most common kind was food and beverage; the largest payer was Biotissue Holdings 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
- Lpec Medical Eye Care PLLCMedina, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Clayton Cosman among 1,822 ophthalmology physician records in New York
William Clayton Cosman, M.D. is one of 1,822 ophthalmology physician records with a practice address in New York. 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 16% of them.
- NPI issued2006 · 16% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2002 · median 1995 among the 1,215 with a school on file
- Record last updated2025 · 71% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 ophthalmology physician records list a practice address in Medina
They are 2 of the 130 NPPES records with a practice address in Medina, and 1,822 ophthalmology physician records in New York.
All 1,822 in New York → Every provider in Medina → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Arthur Mruczek, MDMedina, NY 141031124097878
- Andrea Buccilli, MDLockport, NY 140941770724635
- John Crofts, MDLockport, NY 140941497770580
- Vivian Fasula, M.D.Lockport, NY 140941073570396
- Charles Fetterman, MDLockport, NY 140941922038785
- Karen Walcott, M.D.N Tonawanda, NY 141201942232483
- Michael Johnson, M.D.Irving, NY 140811427017490
- Vishal Sharma, M.D.Irving, NY 140811851494769
Common questions
What is William Clayton Cosman, M.D.'s NPI number?
William Clayton Cosman, M.D.'s National Provider Identifier (NPI) is 1326099789, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Clayton Cosman, M.D. located?
The NPPES record lists a practice address at 500 Erie St S, Medina, NY, 14103. Phone: (585) 798-2020. Providers update this record themselves, so call before visiting.
How can I verify William Clayton Cosman, M.D.'s license?
NPPES lists New York license number 2393991, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Clayton Cosman, M.D. prescribe under Medicare Part D?
In 2024, William Clayton Cosman, M.D. had 1,369 Medicare Part D claims for 441 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is William Clayton Cosman, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.