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Accepted Insurance

  • Aetna
  • Affinity Health Plan
  • Anthem Blue Cross Blue Shield (BCBS)
  • Anthem Blue Cross Blue Shield (BCBS) of Colorado
  • Anthem Blue Cross Blue Shield (BCBS) of Connecticut
  • Anthem Blue Cross of California
View All Insurance


Primary: Orthopedic Surgeon

Sub-Specialty: General

Additional Specialties: Orthopaedic Surgery, Orthopedic Surgery, Orthopedic Surgery, Sports Med


Board Certified
Dr. William Unis is an Orthopedic Surgeon practicing at NewYork-Presbyterian Medical Group Westchester located in Bronxville, NY. He graduated from University of Ottawa Faculty of Medicine and has been practicing for 42 years. Some of his areas of interest treated are adult hip arthritis, hip disease, joint replacement surgery, knee disorders, knee injuries, hip bursitis, sports injuries and a list of others. Dr. Tsirlin is affiliated with NewYork-Presbyterian Lawrence Hospital and was the Director of Orthopedic Surgery at NewYork-Presbyterian Lawrence Hospital from 1990-1999.
Languages Spoken
French, Greek, Italian, Polish, Spanish


Accepts New Patients
  • Arthritis, Knee Problems, Hip Bursitis And More
  • Herniated Disc
  • Pinched Nerve
  • Osteoarthritis
  • Arthritis
  • Degenerative Disc Disease (ddd)
  • Pain
  • Torn Meniscus
  • Swelling

Provider Training

Continuing Medical Education (CME) - ST VINCENT'S HSP & M C-NY, 1970
General Surgery, 1969

Orthopaedic Surgery

Location & Hours

Practice Affiliations

Practice At 77 Pondfield Rd

77 Pondfield Rd

Bronxville, NY 10708

Main Location

77 Pondfield Rd

Bronxville, NY 10708

NewYork-Presbyterian Medical Group Westchester

Other Information

Other Link

Physicians & Surgeons, Physicians & Surgeons, Family Medicine & General Practice, Physicians & Surgeons, Orthopedics, Physicians & Surgeons, Public Health, Physicians & Surgeons, Surgery-General
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