Yelena S. Zack, MD

Medicare activity in 2024

Official CMS public-use data for Yelena S. Zack, 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.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)39 services
2. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)28 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 cholesterol75%
• Anxiety75%
• High blood pressure69%
• Depression69%
• Diabetes46%
• Arthritis46%

Hospitals where Yelena S. Zack works

Medicare's Facility Affiliation Data lists Yelena S. Zack 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.

• Phelps HospitalSleepy Hollow, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330261

Practice locations

Addresses where Yelena S. Zack is enrolled with Medicare (CMS data updated October 2, 2026).

• 701 N BroadwaySleepy Hollow, NY 10591 (914) 366‑3000

Group practices

Medicare enrollment lists Yelena S. Zack as a member of this group (CMS data updated October 2, 2026).

• North Shore-Lij Medical PC6,440 clinicians in the group

Specialties

• Psychiatryprimary
• Neurologyalso

Find other Psychiatry doctors in New York →

Other psychiatrists in Sleepy Hollow

Clinicians with the same Medicare primary specialty in Sleepy Hollow, NY — not a recommendation.

• Asha Vaid, MD
• Craig S. Rogers, MD
• Sara Afzal, MD
• Michelle Williams, MD
• Steven Bogen, MD
• Armond Collins, MD

All psychiatrists in Sleepy Hollow →

Other clinicians in North Shore-Lij Medical PC

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

• Batsheva R. Sholomson, DO
• Joshua H. Kern, MD
• Marco S. Papaleo, MD
• Dmitriy Nevelev, MD
• Asaff Harel, MD
• Omoakhe I. Tisor, MD

Clinician information

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