Quick answers
- Does Thomas J. Keenan Iv accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas J. Keenan Iv 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 Thomas J. Keenan Iv see?
- In 2024, CMS data shows 509 Original Medicare patients and 3,680 services for Thomas J. Keenan Iv. This counts Original Medicare only and measures volume, not quality.
- What is Thomas J. Keenan Iv's NPI number?
- 1083606123. 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 Thomas J. Keenan Iv, 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 | 509 |
|---|---|
| Services billed to Medicare | 3,680 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Removal of cataract with insertion of prosthetic lens (66984)2,070 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)532 services
- Photography of the retina (92250)529 services
- Exam of visual field with extended testing (92083)235 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)71 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 cholesterol75%
- High blood pressure74%
- Arthritis44%
- Diabetes29%
- Ischemic heart disease22%
- Anxiety21%
Practice locations
Addresses where Thomas J. Keenan Iv is enrolled with Medicare (CMS data updated October 2, 2026).
- 1627 Midland TrlShelbyville, KY 40065 (502) 633‑2985
- 4000 Poplar Level RdLouisville, KY 40213 (502) 459‑2020
Group practices
Medicare enrollment lists Thomas J. Keenan Iv as a member of this group (CMS data updated October 2, 2026).
- Louisville Optometric Centers III, PSC38 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Kentucky
Clinicians with the same Medicare primary specialty in Kentucky — not a recommendation.
Other clinicians in Louisville Optometric Centers III, PSC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | University Of Houston - College Of Optometry |
| Graduation year | 1982 (44 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083606123 |
| 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
- 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