Ellen L. Kotwas-Song, MD

Medicare activity in 2024

Official CMS public-use data for Ellen L. Kotwas-Song, 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. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)294 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)233 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)147 services
4. Needle measurement of electrical activity in arm or leg muscles, limited study (95885)128 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)103 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%
• Arthritis54%
• Diabetes40%
• Anxiety33%
• Ischemic heart disease32%

Hospitals where Ellen L. Kotwas-Song works

Medicare's Facility Affiliation Data lists Ellen L. Kotwas-Song 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.

• Helen Hayes HospitalWest Haverstraw, NY · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 330405
• Nyack HospitalNyack, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330104

Practice locations

Addresses where Ellen L. Kotwas-Song is enrolled with Medicare (CMS data updated October 2, 2026).

• 2 Crosfield Ave, Suite 202West Nyack, NY 10994 (845) 353‑4344

Group practices

Medicare enrollment lists Ellen L. Kotwas-Song as a member of this group (CMS data updated October 2, 2026).

• White Plains Medical Diagnostic Services, PC93 clinicians in the group

Specialties

• Neurologyprimary

Find other Neurology doctors in New York →

Other neurologists in New York

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

• Andrew Erian, MD
• Kaiyu Ma
• Shawn Tsekhan, DO
• Timothy M. Lynch, MD
• Sang Myung Han, MD
• Eghosa Omoregie, MD
• Michael Tamimi, MD
• Kerin B. Hausknecht, MD

All neurologists in New York →

Other clinicians in White Plains Medical Diagnostic Services, PC

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

• Vincent M. Ibelli, MD
• Lorraine Olivero-Brodeur
• Laurence C. Miller, MD
• Brijender P. Batra, MD
• Arthur M. Kozin, MD
• Svetlana Korenfeld, 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