Quick answers
- Does Glenn J. Macdonald accept Medicare assignment?
- Yes. Medicare's clinician data says Glenn J. Macdonald 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 Glenn J. Macdonald see?
- In 2024, CMS data shows 142 Original Medicare patients and 716 services for Glenn J. Macdonald. This counts Original Medicare only and measures volume, not quality.
- What is Glenn J. Macdonald's NPI number?
- 1437252665. 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 Glenn J. Macdonald, 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 | 142 |
|---|---|
| Services billed to Medicare | 716 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 82 |
Most frequent services
- Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)154 services
- Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)107 services
- Telephone medical discussion with physician, 21-30 minutes (99443)63 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)55 services
- Telephone medical discussion with physician, 11-20 minutes (99442)44 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%
- Arthritis56%
- Diabetes44%
- Depression41%
- Alzheimer's disease or dementia40%
Practice locations
Addresses where Glenn J. Macdonald is enrolled with Medicare (CMS data updated October 2, 2026).
- 623 Stewart Ave, Suite 102Garden City, NY 11530 (516) 331‑2082
Group practices
Medicare enrollment lists Glenn J. Macdonald as a member of this group (CMS data updated October 2, 2026).
- Active Life Health of Garden City Medical PLLC2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Garden City
Clinicians with the same Medicare primary specialty in Garden City, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1980 (46 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437252665 |
| 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