Quick answers
- Does William A. Pettit Iii accept Medicare assignment?
- Yes. Medicare's clinician data says William A. Pettit Iii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does William A. Pettit Iii see?
- In 2024, CMS data shows 1,248 Original Medicare patients and 9,376 services for William A. Pettit Iii. This counts Original Medicare only and measures volume, not quality.
- What is William A. Pettit Iii's NPI number?
- 1942308473. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for William A. Pettit Iii, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,248 |
|---|---|
| Services billed to Medicare | 9,376 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Imaging of retina (92134)2,519 services
- Injection, aflibercept, 1 mg (J0178)1,038 services
- Injection of drug into eye (67028)886 services
- Established patient complete exam of visual system (92014)800 services
- Injection, bevacizumab, 10 mg (J9035)558 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure72%
- High cholesterol62%
- Arthritis44%
- Diabetes28%
- Chronic kidney disease24%
- Ischemic heart disease23%
Hospitals where William A. Pettit Iii works
Medicare's Facility Affiliation Data lists William A. Pettit Iii at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Grande Ronde HospitalLa Grande, OR · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 381321
Practice locations
Addresses where William A. Pettit Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 1404 Gekeler LnLa Grande, OR 97850 (541) 963‑3119
- 900 Sunset DrLa Grande, OR 97850 (541) 963‑3119
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Oregon
Clinicians with the same Medicare primary specialty in Oregon — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942308473 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians