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Medical Oncology

Alexander I. Zuhoski, MD

Works at hospitals in Riverhead, NY · Stony Brook, NY · New York

Summary

Dr. Alexander I. Zuhoski, MD is an oncologist at 285 Sills Rd, Bldg 17, East Patchogue, NY 11772. Phone: (631) 751-3000. Accepts Medicare assignment. In 2024, Alexander I. Zuhoski had 1,794 Original Medicare patients and 309,881 services. NPI 1992740856. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Oncologist (Medicare lists Medical Oncology)
  • Address: 285 Sills Rd, Bldg 17, East Patchogue, NY 11772 · Directions
  • Phone: (631) 751‑3000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Peconic Bay Medical Center, Suny/Stony Brook University Hospital
  • Group practice: North Shore Hematology Oncology Associates PC
  • Medical school: State University Of New York At Stony Brook, School Of Medicine · graduated 1997 (29 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Alexander I. Zuhoski, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Alexander I. Zuhoski accept Medicare assignment?
Yes. Medicare's clinician data says Alexander I. Zuhoski 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 Alexander I. Zuhoski see?
In 2024, CMS data shows 1,794 Original Medicare patients and 309,881 services for Alexander I. Zuhoski. This counts Original Medicare only and measures volume, not quality.
What is Alexander I. Zuhoski's NPI number?
1992740856. 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 Alexander I. Zuhoski, 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 patients1,794
Services billed to Medicare309,881
Different services or procedures292
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Injection, ferric carboxymaltose, 1 mg (J1439)119,250 services
  2. Injection, darbepoetin alfa, 1 microgram (non-esrd use) (J0881)22,500 services
  3. Injection, pembrolizumab, 1 mg (J9271)10,600 services
  4. Injection, iron sucrose, 1 mg (J1756)9,400 services
  5. Injection, denosumab, 1 mg (J0897)7,320 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%
  • Arthritis52%
  • Ischemic heart disease42%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)38%
  • Chronic kidney disease34%

Hospitals where Alexander I. Zuhoski works

Medicare's Facility Affiliation Data lists Alexander I. Zuhoski 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.

  • Peconic Bay Medical CenterRiverhead, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330107
  • Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330393

Practice locations

Addresses where Alexander I. Zuhoski is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Alexander I. Zuhoski as a member of this group (CMS data updated October 2, 2026).

  • North Shore Hematology Oncology Associates PC479 clinicians in the group

Specialties

Find other Medical Oncology doctors in New York →

Other oncologists in New York

Clinicians with the same Medicare primary specialty in New York — not a recommendation.

All oncologists in New York →

Other clinicians in North Shore Hematology Oncology Associates PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolState University Of New York At Stony Brook, School Of Medicine
Graduation year1997 (29 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1992740856
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians