Quick answers
- Does Nathan J. Kirby accept Medicare assignment?
- Yes. Medicare's clinician data says Nathan J. Kirby 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 Nathan J. Kirby see?
- In 2024, CMS data shows 413 Original Medicare patients and 4,906 services for Nathan J. Kirby. This counts Original Medicare only and measures volume, not quality.
- What is Nathan J. Kirby's NPI number?
- 1558719054. 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 Nathan J. Kirby, 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 | 413 |
|---|---|
| Services billed to Medicare | 4,906 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Removal of cataract with insertion of prosthetic lens (66984)3,422 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)347 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)46 services
- Imaging of retina (92134)41 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)36 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 pressure75%
- High cholesterol75%
- Arthritis47%
- Diabetes31%
- Ischemic heart disease28%
- Anxiety24%
Practice locations
Addresses where Nathan J. Kirby is enrolled with Medicare (CMS data updated October 2, 2026).
- 510 W Union AveLitchfield, IL 62056 (217) 324‑3317
- 675 School StHillsboro, IL 62049 (217) 532‑5044
Group practices
Medicare enrollment lists Nathan J. Kirby as a member of this group (CMS data updated October 2, 2026).
- Family Eye Care Association, P.C.3 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Litchfield
Clinicians with the same Medicare primary specialty in Litchfield, IL — not a recommendation.
Other clinicians in Family Eye Care Association, P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | University Of Missouri St Louis - School Of Optometry |
| Graduation year | 2015 (11 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558719054 |
| 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