Martin Zonenshayn, MD

Medicare activity in 2024

Official CMS public-use data for Martin Zonenshayn, 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. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)61 services
2. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)52 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)42 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)40 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)37 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%
• Arthritis75%
• Diabetes59%
• Ischemic heart disease41%
• Chronic kidney disease31%

Hospitals where Martin Zonenshayn works

Medicare's Facility Affiliation Data lists Martin Zonenshayn 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.

• New York-Presbyterian HospitalNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330101

Practice locations

Addresses where Martin Zonenshayn is enrolled with Medicare (CMS data updated October 2, 2026).

• 506 6th StBrooklyn, NY 11215 (718) 780‑3000

Group practices

Medicare enrollment lists Martin Zonenshayn as a member of this group (CMS data updated October 2, 2026).

• Kings Physician Services PC648 clinicians in the group

Specialties

• Neurosurgeryprimary

Find other Neurosurgery doctors in New York →

Other neurosurgeons in Brooklyn

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

• Osamah J. Choudhry, MD
• Amit Y. Schwartz, MD
• Erico Cardoso, MD
• Arianne J. Boylan, MD
• Daniel W. Zumofen, MD
• Nicholas H. Post, MD
• Ernest J. Barthelemy, MD
• William M. Wirchansky, MD

All neurosurgeons in Brooklyn →

Other clinicians in Kings Physician Services PC

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

• Sonam Brahmbhatt, MD
• Michelle Chanin
• Begum Aktar, PA
• Isolda F. Ng, NP
• William A. Schropp, PA
• Jonathan Canaani, 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