Margaretta Masse, MD

Medicare activity in 2024

Official CMS public-use data for Margaretta Masse, 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. Destruction of precancer skin growth, 2-14 growths (17003)171 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)120 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)120 services
4. Destruction of precancer skin growth, 1 growth (17000)76 services
5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)76 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%
• High blood pressure64%
• Arthritis46%
• Diabetes32%
• Ischemic heart disease29%
• Anxiety26%

Hospitals where Margaretta Masse works

Medicare's Facility Affiliation Data lists Margaretta Masse 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.

• Lenox Hill HospitalNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330119

Practice locations

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

• 1991 Marcus Ave, Suite 300New Hyde Park, NY 11042 (516) 719‑3376
• 300 Community DrManhasset, NY 11030 (516) 876‑5555

Group practices

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

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

Specialties

• Dermatologyprimary

Find other Dermatology doctors in New York →

Other dermatologists in New Hyde Park

Clinicians with the same Medicare primary specialty in New Hyde Park, NY — not a recommendation.

• Camila S. Villa-Ruiz, MD
• Barbara Hisler
• Reason Wilken, MD
• Robert A. Skrokov, MD
• Karolina Mieczkowska, MD
• Silvija P. Gottesman, MD
• Rachel Tannenbaum, MD
• Norma J. Montiel, DO

All dermatologists in New Hyde Park →

Other clinicians in North Shore-Lij Medical PC

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

• Bhumika Chudasama
• Lyubov Rubin, MD
• Brian C. Strizik, MD
• Jesse Power, CSW
• Kip L. Bodi, MD
• Edward McCabe, DO

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