Quick answers
- Does John N. Makaryus accept Medicare assignment?
- Yes. Medicare's clinician data says John N. Makaryus 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 N. Makaryus see?
- In 2024, CMS data shows 526 Original Medicare patients and 833 services for John N. Makaryus. This counts Original Medicare only and measures volume, not quality.
- What is John N. Makaryus's NPI number?
- 1790941482. 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 N. Makaryus, 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 | 526 |
|---|---|
| Services billed to Medicare | 833 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)461 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)111 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)111 services
- Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)79 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)20 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%
- Ischemic heart disease74%
- Arthritis58%
- Diabetes50%
- Heart failure48%
Hospitals where John N. Makaryus works
Medicare's Facility Affiliation Data lists John N. Makaryus at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Long Island Jewish Medical CenterNew Hyde Park, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330195
- North Shore University HospitalManhasset, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330106
Practice locations
Addresses where John N. Makaryus is enrolled with Medicare (CMS data updated October 2, 2026).
- 300 Community DrManhasset, NY 11030 (516) 562‑3058
Group practices
Medicare enrollment lists John N. Makaryus as a member of this group (CMS data updated October 2, 2026).
- North Shore-Lij Medical PC6,440 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New York →
Other cardiologists in Manhasset
Clinicians with the same Medicare primary specialty in Manhasset, NY — not a recommendation.
Other clinicians in North Shore-Lij Medical PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| 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) | 1790941482 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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