Amy Williams, OD
NPI 1811979289 · Optometrist · Defiance, OH
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Williams, OD is a Optometrist provider in Defiance, OH (NPI 1811979289).
Provider details
- NPI number
- 1811979289
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- 4600T1343 (OH)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,786 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 526 | $85 |
| Imaging of Retina92134 | 324 | $37 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 296 | $121 |
| Imaging of Optic Nerve92133 | 215 | $33 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 211 | $105 |
| Exam of Visual Field With Extended Testing92083 | 99 | $58 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 612 | 144 |
| Brimonidine Tartrate | 205 | 54 |
| Timolol Maleate | 144 | 41 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 100 | 27 |
| Dorzolamide Hcl | 72 | 22 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 68 | 46 |
| Bimatoprostbrand: Lumigan | 48 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$185 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 3330 Meijer Dr # 1Toledo, OH 43617-3103Phone: (419) 578-2020Fax: (419) 539-6323
Registry dates
- Enumerated
- 2005-11-18
- Last updated
- 2023-11-03
- Certified
- 2023-06-06
Frequently asked questions
- What is Amy Williams's NPI number?
- Amy Williams's National Provider Identifier (NPI) is 1811979289, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Williams's specialty?
- Amy Williams is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Amy Williams located?
- Amy Williams's practice location on file with NPPES is 1252 Ralston Ave Ste 400, Defiance, OH 43512-1480.
- What is Amy Williams's phone number?
- The practice phone number listed in the NPPES registry for Amy Williams is (419) 782-6588.
- Does Amy Williams accept Medicare?
- Amy Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Williams's NPI active?
- Yes — Amy Williams's NPI (1811979289) is active in the NPPES registry as of the last update on 2023-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.