Katherine B. Vadasdi, MD

Medicare activity in 2024

Official CMS public-use data for Katherine B. Vadasdi, 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. Injection, methylprednisolone acetate, 1 mg (J1010)2,261 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)282 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)206 services
4. Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)140 services
5. Aspiration and/or injection of fluid from large joint (20610)137 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%
• Arthritis64%
• High blood pressure56%
• Osteoporosis26%
• Ischemic heart disease22%
• Anxiety18%

Hospitals where Katherine B. Vadasdi works

Medicare's Facility Affiliation Data lists Katherine B. Vadasdi 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.

• Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070018

Practice locations

Addresses where Katherine B. Vadasdi is enrolled with Medicare (CMS data updated October 2, 2026).

• 500 Mamaroneck AveHarrison, NY 10528 (203) 869‑1145
• 6 Greenwich Office ParkGreenwich, CT 06831 (203) 869‑1145

Group practices

Medicare enrollment lists Katherine B. Vadasdi as a member of this group (CMS data updated October 2, 2026).

• Orthopaedic and Neurosurgery Specialists, PLLC259 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in New York →

Other orthopedic surgeons in Harrison

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

• Kevin A. Cassidy, MD
• Michael R. Rutter, MD
• Wei Shen, MD
• Marc S. Kowalsky, MD
• Ronald T. Greene, MD
• Hamid R. Mostafavi, MD
• Michael R. Clain, MD
• Jeffrey H. Richmond, MD

All orthopedic surgeons in Harrison →

Other clinicians in Orthopaedic and Neurosurgery Specialists, PLLC

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

• Melissa L. Larusso, DO
• Richard J. D Agostino, MD
• Warren P. Sheprow, PA
• Amara Nasir, MD
• Garrett W. Wadsworth
• Jacob C. Kurtz, PA

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