Quick answers
- Does Zachary A. Davis accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary A. Davis 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 Zachary A. Davis see?
- In 2024, CMS data shows 1,061 Original Medicare patients and 5,464 services for Zachary A. Davis. This counts Original Medicare only and measures volume, not quality.
- What is Zachary A. Davis's NPI number?
- 1093209777. 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 Zachary A. Davis, 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 | 1,061 |
|---|---|
| Services billed to Medicare | 5,464 |
| Different services or procedures | 52 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,177 services
- Injection, bimatoprost, intracameral implant, 1 microgram (J7351)600 services
- Imaging of optic nerve (92133)587 services
- Exam of visual field with extended testing (92083)498 services
- Exam of the internal drainage system of eye (92020)437 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%
- Arthritis48%
- Ischemic heart disease36%
- Diabetes33%
- Anxiety25%
Practice locations
Addresses where Zachary A. Davis is enrolled with Medicare (CMS data updated October 2, 2026).
- 260 E Middle Country Rd, Suite 201Smithtown, NY 11787 (631) 265‑8780
Group practices
Medicare enrollment lists Zachary A. Davis as a member of this group (CMS data updated October 2, 2026).
- Sight Medical Doctors PLLC115 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Smithtown
Clinicians with the same Medicare primary specialty in Smithtown, NY — not a recommendation.
Other clinicians in Sight Medical Doctors PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Florida International Univ, College Of Medicine |
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1093209777 |
| 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