William E. Sax, OD
Optometrist · Cleveland, OH
William E. Sax, OD is an optometrist with a practice address in Cleveland, Ohio, and NPI 1134166341, issued on May 31, 2006. Check the license (Ohio OPT.5187, as entered in NPPES) with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William E. Sax
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT.5187 OH
Self-reported in NPPES; status is on the state search - Practice location
- 9500 Euclid Ave, Cleveland, OH 44195
- Phone
- (800) 223-2273
- Enumerated
- May 31, 2006
- Record last updated
- Feb 20, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 2596810 OH
- Medicare enrollment
- Enrolled (PECOS I20061016000288); accepts Medicare assignment
- Medical or professional school
- Pennsylvania College Of Optometry, 1982
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,443 in Ohio → Look up another NPI →
Also registered at 9500 Euclid Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cassandra Abbatemarco, CNPPsychiatric/Mental Health Nurse Practitioner1417645144
- Walid Abboud, MDInternal Medicine Physician1245295559
Verify William E. Sax in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Ohio board licenses this profession
Search for license OPT.5187Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average optometrist in 2024
43 Medicare Part D claims for 14 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims.
Most prescribed
- Xiidra12 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.
One hospital affiliation
- Cleveland ClinicCleveland, OH · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
William E. Sax among 2,443 optometrist records in Ohio
William E. Sax, OD is one of 2,443 optometrist records with a practice address in Ohio. 71% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 54% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1982 · median 2006 among the 1,466 with a school on file
- Record last updated2008 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Ohio
There are 2,443 optometrist records in Ohio.
All 2,443 in Ohio → Every provider in Cleveland → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- David Barnhart, ODCleveland, OH 441951952458028
- Anita Chitluri, O.D.Cleveland, OH 441951396784351
- Heather Cimino, ODCleveland, OH 441951609933977
- Andrea Crabb, O.D.Cleveland, OH 441951750621082
- Roy Ebihara, M.D.Cleveland, OH 441951114983699
- Robert Engel, ODCleveland, OH 441951881718534
- Marilyn Johnson, ODCleveland, OH 441951497545289
- Gregory Kosunick, ODCleveland, OH 441951699865931
Common questions
What is William E. Sax, OD's NPI number?
William E. Sax, OD's National Provider Identifier (NPI) is 1134166341, issued on May 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William E. Sax, OD located?
The NPPES record lists a practice address at 9500 Euclid Ave, Cleveland, OH, 44195. Phone: (800) 223-2273. Providers update this record themselves, so call before visiting.
How can I verify William E. Sax, OD's license?
NPPES lists Ohio license number OPT.5187, as entered by the provider. Search the Ohio board that licenses this profession; the NPPES record confirms identity only.
How much does William E. Sax, OD prescribe under Medicare Part D?
In 2024, William E. Sax, OD had 43 Medicare Part D claims for 14 beneficiaries; the average among optometrist prescribers was 277. 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.