William Lay, O.D.
NPI 1902922560 · Optometrist · Westerville, OH
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Lay, O.D. is a Optometrist provider in Westerville, OH (NPI 1902922560).
Provider details
- NPI number
- 1902922560
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4365-T271 (OH)
Specialties & taxonomies
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,032 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 | 209 | $85 |
| Photography of the Retina92250 | 184 | $34 |
| Exam of Visual Field With Extended Testing92083 | 151 | $58 |
| Established Patient Complete Exam of Visual System92014 | 139 | $116 |
| Imaging of Optic Nerve92133 | 136 | $31 |
| Imaging of Retina92134 | 97 | $37 |
| Exam of the Internal Drainage System of Eye |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Timolol Maleate | 134 | 38 |
| Latanoprost | 133 | 25 |
| Brimonidine Tartrate | 49 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 35 | 14 |
| Bimatoprostbrand: Lumigan | 27 | — |
| Lifitegrastbrand: Xiidra | 17 | — |
| Cyclosporinebrand: Restasis | 16 | — |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,232 across 28 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
Registry dates
- Enumerated
- 2007-03-22
- Last updated
- 2008-01-30
Frequently asked questions
- What is William Lay's NPI number?
- William Lay's National Provider Identifier (NPI) is 1902922560, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Lay's specialty?
- William Lay is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is William Lay located?
- William Lay's practice location on file with NPPES is 185 S State St, Westerville, OH 43081-2232.
- What is William Lay's phone number?
- The practice phone number listed in the NPPES registry for William Lay is (614) 898-9989.
- Does William Lay accept Medicare?
- William Lay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Lay's NPI active?
- Yes — William Lay's NPI (1902922560) is active in the NPPES registry as of the last update on 2008-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.