Amy J. Williams, OD
Optometrist · Defiance, OH
Amy J. Williams, OD is an optometrist with a practice address in Defiance, Ohio, and NPI 1811979289, issued on Nov 18, 2005. Check the license (Ohio OPT.004600, as entered in NPPES) with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Amy J. Williams
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License numbers
- OPT.004600 OH
4600T1343 OH
Self-reported in NPPES; status is on the state search - Practice location
- 1252 Ralston Ave Ste 400, Defiance, OH 43512
- Phone
- (419) 782-6588
- Enumerated
- Nov 18, 2005
- Record last updated
- Nov 3, 2023
- Fax
- (419) 784-3622
- Medicaid ID
- 2577082 OH
- Medicare enrollment
- Enrolled (PECOS I20050620000351); accepts Medicare assignment
- Medical or professional school
- Indiana University - School Of Optometry, 1994
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,443 in Ohio → Look up another NPI →
Verify Amy J. Williams 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.004600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.6 times the Medicare Part D claims of the average optometrist in 2024
1,558 Medicare Part D claims for 351 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Latanoprost612 claims
- Brimonidine Tartrate205 claims
- Timolol Maleate144 claims
- Dorzolamide-Timolol100 claims
- Dorzolamide Hcl72 claims
- Neomycin-Polymyxin-Dexameth68 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.
Industry payments in 2024: $184.57
9 payments; by number, the most common kind was food and beverage; the largest payer was Biotissue Holdings Inc. The 34,453 providers of this specialty with any payment received $769.99 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
- Promedica Central PhysiciansToledo, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy J. Williams among 2,443 optometrist records in Ohio
Amy J. Williams, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1994 · median 2006 among the 1,466 with a school on file
- Record last updated2023 · 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).
12 optometrist records list a practice address in Defiance
They are 12 of the 589 NPPES records with a practice address in Defiance, and 2,443 optometrist records in Ohio.
All 2,443 in Ohio → Every provider in Defiance → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Amy BrunswickDefiance, OH 435121356389506
- Robert Burris, O.D.Defiance, OH 435121932245909
- Jeffrey Fogt, ODDefiance, OH 435121427041342
- Julie Frederick, O.D.Defiance, OH 435121841343415
- Heidi Lacey, O.D.Defiance, OH 435121417923244
- Darryl Mathewson, O.D.Defiance, OH 435121952391278
- Daniel Maxwell, ODDefiance, OH 435121881682771
- Daniel Meffley, O.D.Defiance, OH 435121215905294
Common questions
What is Amy J. Williams, OD's NPI number?
Amy J. Williams, OD's National Provider Identifier (NPI) is 1811979289, issued on Nov 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Amy J. Williams, OD located?
The NPPES record lists a practice address at 1252 Ralston Ave Ste 400, Defiance, OH, 43512. Phone: (419) 782-6588. Providers update this record themselves, so call before visiting.
How can I verify Amy J. Williams, OD's license?
NPPES lists Ohio license number OPT.004600, as entered by the provider. Search the Ohio board that licenses this profession; the NPPES record confirms identity only.
How much does Amy J. Williams, OD prescribe under Medicare Part D?
In 2024, Amy J. Williams, OD had 1,558 Medicare Part D claims for 351 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.