David Williams, M.D.
NPI 1821176959 · Ophthalmology Physician · Elizabethtown, PA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1821176959
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- TRN9942 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,069 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 Problem Focused Exam of Visual System92012 | 542 | $83 |
| Established Patient Complete Exam of Visual System92014 | 407 | $117 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 278 | $29 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 186 | $506 |
| Imaging of Optic Nerve92133 | 148 | $32 |
| Imaging of Retina92134 | 145 | $37 |
| Exam of Visual Field With Extended Testing |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 278 | 82 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 123 | 38 |
| Timolol Maleate | 83 | 28 |
| Bimatoprostbrand: Lumigan | 45 | 15 |
| Prednisolone Acetate | 40 | 26 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 39 | 33 |
| Erythromycin Basebrand: Erythromycin | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$100 across 5 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)
- 233 W Penn AveCleona, PA 17042-3230Phone: (717) 272-0581Fax: (717) 274-5889
Registry dates
- Enumerated
- 2006-11-02
- Last updated
- 2024-12-17
- Certified
- 2024-12-17
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.