Quick answers
- Does John F. Gillis accept Medicare assignment?
- Yes. Medicare's clinician data says John F. Gillis 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 John F. Gillis see?
- In 2024, CMS data shows 429 Original Medicare patients and 1,364 services for John F. Gillis. This counts Original Medicare only and measures volume, not quality.
- What is John F. Gillis's NPI number?
- 1083970628. 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 John F. Gillis, 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 | 429 |
|---|---|
| Services billed to Medicare | 1,364 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient complete exam of visual system (92014)257 services
- Measurement of corneal curvature and depth of eye (92136)229 services
- New patient complete exam of visual system (92004)191 services
- Removal of cataract with insertion of prosthetic lens (66984)174 services
- Imaging of optic nerve (92133)115 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 cholesterol73%
- High blood pressure71%
- Arthritis47%
- Diabetes36%
- Ischemic heart disease27%
- Chronic kidney disease27%
Practice locations
Addresses where John F. Gillis is enrolled with Medicare (CMS data updated October 2, 2026).
- 4235 Indian Ripple Rd, Suite 100Beavercreek, OH 45440 (937) 427‑2020
Group practices
Medicare enrollment lists John F. Gillis as a member of this group (CMS data updated October 2, 2026).
- Stahl Vision Inc4 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Beavercreek
Clinicians with the same Medicare primary specialty in Beavercreek, OH — not a recommendation.
Other clinicians in Stahl Vision Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083970628 |
| 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