Quick answers
- Does Sidney I. Greenberg accept Medicare assignment?
- Yes. Medicare's clinician data says Sidney I. Greenberg 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 Sidney I. Greenberg see?
- In 2024, CMS data shows 896 Original Medicare patients and 1,163 services for Sidney I. Greenberg. This counts Original Medicare only and measures volume, not quality.
- What is Sidney I. Greenberg's NPI number?
- 1548342660. 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 Sidney I. Greenberg, 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 | 896 |
|---|---|
| Services billed to Medicare | 1,163 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes (99307)377 services
- New patient complete exam of visual system (92004)297 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)290 services
- Established patient complete exam of visual system (92014)177 services
- Established patient problem focused exam of visual system (92012)21 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%
- Alzheimer's disease or dementia70%
- High cholesterol66%
- Diabetes55%
- Anxiety48%
- Arthritis47%
Practice locations
Addresses where Sidney I. Greenberg is enrolled with Medicare (CMS data updated October 2, 2026).
- 150 S Perry StMontgomery, AL 36104 (248) 528‑2116
Group practices
Medicare enrollment lists Sidney I. Greenberg as a member of this group (CMS data updated October 2, 2026).
- 360CARE Services of Al LLC28 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Montgomery
Clinicians with the same Medicare primary specialty in Montgomery, AL — not a recommendation.
Other clinicians in 360CARE Services of Al LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Southern College Of Optometry |
| Graduation year | 1965 (61 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548342660 |
| 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