Quick answers
- Does Gregory L. Henderson Sr. accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory L. Henderson Sr. 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 Gregory L. Henderson Sr. see?
- In 2024, CMS data shows 147 Original Medicare patients and 3,692 services for Gregory L. Henderson Sr.. This counts Original Medicare only and measures volume, not quality.
- What is Gregory L. Henderson Sr.'s NPI number?
- 1427055227. 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 Gregory L. Henderson Sr., 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 | 147 |
|---|---|
| Services billed to Medicare | 3,692 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Closure of tear duct opening using plug (68761)832 services
- Exam of the internal drainage system of eye (92020)365 services
- Exam of visual field with extended testing (92083)362 services
- Extended exam of the back part of the eye with retinal drawing (92201)219 services
- Imaging of retina (92134)213 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%
- Arthritis54%
- Ischemic heart disease33%
- Diabetes30%
- Anxiety24%
Practice locations
Addresses where Gregory L. Henderson Sr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 403 Vonderburg DrBrandon, FL 33511 (813) 681‑1122
Group practices
Medicare enrollment lists Gregory L. Henderson Sr. as a member of this group (CMS data updated October 2, 2026).
- Gregory L Henderson MD Facs Inc30 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Brandon
Clinicians with the same Medicare primary specialty in Brandon, FL — not a recommendation.
Other clinicians in Gregory L Henderson MD Facs Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Florida College Of Medicine |
| Graduation year | 1975 (51 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427055227 |
| 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