Careers

Medical Staff

This section will provide you with more information about our medical staff and their experiences, backgrounds, and dedication to the medical community. Please click on any of our medical staff members' names to learn more about them.

John Joseph Callahan, M.D
Timothy J. Collard, M.D.
Lisa A. Daye, M.D.
John P. Hurley, D.P.M.
Jason M. Matuszak, M.D.
Paul D. Paterson, M.D.
Stephen D. Rycyna, M.D.
Peter E. Shields, M.D.
James A. Slough, M.D.
Andrew C. Stoeckl, M.D.
Karen G. Baetzhold, R.P.A.-C
Christine Ehrensberger, R.P.A.-C
Stefani J. Hagglund, R.P.A.-C
Natalie Miller-Kovachik, R.P.A.-C
Mark T. Orlowski, R.P.A.-C
Lisa R. Porter, R.P.A.-C
Andrea Skillman, R.P.A.-C
Nicolette A. Sciolino, R.P.A.-C

Dr. John Joseph Callahan

Board-Certified Orthopaedic Surgeon

Education
A native of Buffalo, Dr. Callahan graduated from the University of Notre Dame with honors. He received his medical degree at SUNY Health Science Center at Syracuse, did his postgraduate internship and residency at Boston University Affiliated Hospitals and Boston University, and completed a fellowship in hand and microvascular surgery at the University of California San Diego. He returned to Buffalo in 1993 and began private practice at Southtowns Orthopaedics. Dr. Callahan is a past president of the Western New York Orthopaedic Society. He has published research in Clinical Orthopaedics and Related Research and Journal of Hand Surgery.
Current Positions

  • Excelsior Orthopaedics, Parkland Complex, Orchard Park
  • Excelsior Medical Campus, Amherst
  • Medical staff, Mercy Hospital, ECMC
  • Buffalo Surgery Center, Excelsior Medical Campus
  • Center for Ambulatory Surgery, West Seneca

Memberships

  • Mercy Hospital of Buffalo Institutional Review Board
  • Fellow, American Academy of Orthopaedic Surgeons
  • American Medical Association
  • Medical Society of the State of New York
  • Erie County Medical Society
  • Western New York Orthopaedic Society
  • American Society for Surgery of the Hand
  • New York State Society of Orthopaedic Surgeons
  • Eastern Orthopaedics Association

Former Positions

  • Private practice, Southtowns Orthopaedics, Orchard Park, NY
  • East Boston Neighborhood Health Center Orthopaedic Clinic, East Boston, MA
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Dr. Timothy J Collard

Board-Certified Orthopaedic Surgeon

Education

Dr. Timothy J. Collard is a graduate of St. Vincent College and Loyola University Stritch School of Medicine. He interned at Jackson Memorial Hospital in Miami, Florida, and after serving two years with the U.S. Army as a Medical Officer he then returned to his hometown of Buffalo for a residency at the University at Buffalo Orthopedics Program. In 1975, after completing rotations at Erie County Medical Center, Buffalo General Hospital, Buffalo Children's Hospital, and Veteran's Administration Hospital, Dr. Collard joined Western New York Orthopedic Group, P.C.

Community Leadership

Dr. Collard has in the past been President of Western New York Independent Practice Association, Medical Director at Athleticare Sports Injury Clinic, and a member of the Board of Trustees at Kenmore Mercy Hospital, where he is on its medical staff. Previously, he was the Chief of Orthopedics at Sisters Hospital. He has been an Instructor of Orthopedic Surgery at the University at Buffalo. He has been a member of the Bishop's Lay Committee and the Board of Trustees for St. Joseph's Collegiate Institute.

Current Positions

  • Private Practice, Excelsior Orthopaedics
  • Certified member of the American Academy Orthopaedic Surgeons
  • Excelsior Orthopaedics
  • Western New York Orthopaedic Society
  • Instructor of Surgery, SUNY at Buffalo

Former Positions

  • Chief of Orthopaedics, Sisters Hospital
  • Medical Director, Athleticare Sports Injury Clinic, Kenmore Mercy Hospital
  • General Medical Officer, U.S. Army, serving in Viet Nam

Memberships

  • Western New York Orthopaedic Society
  • American Academy of Ortopaedic Surgeons
  • Erie County Medical Society
  • New York State Medical Society
  • Irish American Orthopaedic Society
  • Western New York Trauma Society
  • American Medical Association
  • American Board of Orthopaedic Surgeons
  • Buffalo Bisons Baseball Team
  • Bishops' Lay Committee
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Dr. Lisa A. Daye

Board-Certified Orthopaedic Surgeon

A graduate of the University of Rochester, Dr. Daye completed medical school and residency at the State University of New York at Buffalo. She has been in private practice at Excelsior Orthopaedics since 2000, with a special interest in sports medicine.

Current Positions

  • Private Practice, Excelsior Orthopaedics
  • South Buffalo Mercy Hospital, staff orthopaedic surgeon
  • Affiliated with: Sister's Hospital, Saint Joseph's Hospital, Kenmore Mercy Hospital

Memberships

  • American Academy of Orthopaedic Surgeons
  • New York State Orthopaedic Society
  • Erie County Medical Society

Former Positions

  • Lakeshore Orthopaedic Group
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Dr. John P. Hurley, D.P.M.

Board-Certified in Podiatric Surgery

Dr. Hurley graduated from Canisius College and from Ohio's College of Podiatric Medicine, and completed his residency at the Atlanta Hospital and Regional Diabetes Center. His experience includes research in the treatment of diabetic foot ulcers. He has been working in private practice since 1990.

Current Positions

  • Private Practice, Excelsior Orthopaedics
  • Excelsior Orthopaedics
  • Kaleida Health (Millard Fillmore Hospital), staff podiatrist

Memberships

  • American Board of Podiatric Surgery

Former Positions

  • Ohio College of Podiatric Medicine, Assistant professor
  • Telios Pharmaceuticals, Co-investigator, Research: Randomized multicenter trial comparing the safety and efficacy of standard therapy plus telio-derm versus standard therapy plus control in patients with diabetic foot ulcers.
  • Ethicon Inc. Co-investigator, Research: Phase III study of platelet derived growth factors in the treatment of diabetic foot ulcers.
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Dr. Jason M. Matuszak, M.D.

Primary Care Sports Medicine

EDUCATION

Jason M. Matuszak, M.D. received his Bachelor of Arts from the State University of New York at Buffalo. He received his Medical Degree from the State University of New York Upstate Medical University at Syracuse. Dr. Matuszak completed his Internship and Residency in Family Medicine at St. Joseph's Hospital in Syracuse, NY. He then completed a Fellowship in Sports Medicine at the University of Hawaii, John A. Burns School of Medicine, Manoa, HI.

CURRENT POSITIONS

  • Sports Medicine Physician, Excelsior Orthopaedics, Amherst, NY
  • Advanced Cardiac Life Support, Instructor

FORMER POSITIONS

  • Resident, Department of Family Medicine, St. Joseph's Hospital, Syracuse, NY
  • Chief Resident, Department of Family Medicine, St. Joseph's Hospital, Syracuse, NY
  • Fellow, Division of Sports Medicine, University of Hawaii, John A. Burns School of Medicine, Manoa, HI
  • Associate Clinical Professor/Instructor, Division of Sports Medicine, University of Hawaii, John A. Burns School of Medicine, Manoa, HI
  • Assistant Team Physician, Mililani High School, Mililani, HI
  • Associate Team Physician, University of Hawaii, Manoa, HI

CERTIFICATIONS

  • Advanced Cardiac Life Support
  • Pediatric Advanced Life Support
  • Neonatal Resuscitation
  • Diplomate, American Board of Family Medicine, 2007
  • Diplomate, National Board of Medical Examiners, 2005

SPORTS MEDICINE EXPERIENCE

  • Aquatics Safety Consultant, John Ellis & Associates, Ocoee, FL
  • Aquatics Trainer, Head Lifeguard, Six Flags Darien Lake, Darien, NY
  • Assistant Team Physician, Mililani High School, Mililani, HI
  • Associate Team Physician, University of Hawaii, Manoa, HI
  • Event and Training Room Coverage, Syracuse University, Syracuse, NY
  • Event Coverage, Minoa High School, Minoa, HI & Westhill High School, Syracuse, NY
  • Finish Line Physician/MASH Tent Physician, Honolulu Marathon, Honolulu, HI
  • Medical Associate, Toggenburg Ski Patrol, Fabius, NY
  • Medical Staff, Empire State Games, New York State
  • Station Physician, Ironman Triathlon, Lake Placid, NY
  • Station Physician, Ironman Triathlon World Championships, Kona, HI

MEMBERSHIPS

  • American Academy of Family Physicians
  • American Medical Association
  • American Medical Society of Sports Medicine
  • New York State Academy of Family Physicians
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Dr. Paul D. Paterson

Board-Certified Orthopaedic Surgeon

Dr. Paterson is a graduate of the State University of New York at Buffalo with a Master's degree in Anatomy and Physiology at the University of Michigan and an M.D. from the University at Buffalo's School of Medicine and Biomedical Science. He then pursued a fellowship at Harvard Medical School, where he received extensive training in treating hands and upper extremities.

Current Positions

  • Excelsior Orthopedics, private practice specializing in hand and upper extremities.

Former Positions

  • Amherst Tonawanda Orthopedic Center, Tonawanda, New York.
  • Amersham Corporation, Arlington Heights, Illinois, Territory Sales Manager.
  • Environmental Research Institute of Michigan, Ann Arbor, Michigan, Research Associate.
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Dr. Stephen D. Rycyna, Jr.

Board-Certified Orthopaedic Surgeon

Dr. Rycyna graduated from the University of Notre Dame and Loyola University School of Medicine and completed his orthopedic residency at the University of Buffalo.

Current Positions

  • Private Practice, Excelsior Orthopaedics
  • Member, American Academy of Orthopaedic Surgeons
  • Kenmore Mercy Hospital
  • Athleticare, Kenmore Mercy Hospital
  • DeGraff Memorial Hospital
  • Director, Buffalo Marathon Medical Director
  • Team Physician, Buffalo Bandits
  • Team Physician, Saint Joseph's Collegiate Institute
  • Clinical Instructor, SUNY at Buffalo School of Medicine
  • Clinical Instructor, Rochester Institute of Technology

Memberships

  • American Academy of Orthopedic Surgeons
  • New York State Society of Orthopaedic Surgeons
  • New York State medical Society
  • Erie County Medical Society
  • American Medical Joggers Association
  • International Medical Marathon Directors Association

Former Positions

  • Team Physician, Lockport Senior High School
  • Team Physician, Tonawanda Senior High School
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Dr. Peter E. Shields

Board-Certified Orthopaedic Surgeon

Dr. Shields graduated from Canisius College and received a medical degree from the State University of New York at Buffalo School of Medicine, where he also did his residency in orthopedics. His area of specialization is Total Joints.

Current Positions

  • Private Practice, Excelsior Orthopaedics
  • Kenmore Mercy Hospital, Active Staff
  • DeGraffHospital, Active Staff
  • Team Physician, Buffalo Bandits (Professional Lacrosse)

Memberships

  • American Board of Orthopaedic Surgery
  • American Medical Association
  • Medical Society of the State of New York
  • Erie County Medical Society
  • Western New York Orthpaedic Society
  • New York State Orthopaedic Society
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Dr. James A. Slough

Board-Certified Orthopaedic Surgeon

Dr. Slough is a graduate of the University of Michigan Medical School and completed a general surgical internship at the Graduate Hospital in Philadelphia and orthopaedic training at the University of Missouri at Kansas City. After serving three years of active duty in the United States Navy, Dr. Slough went into private practice in the Buffalo area in 1992.

Current Positions

  • Private Practice, Excelsior Orthopaedics
  • President, Board of Directors, Excelsior Orthopaedics LLP
  • Team Physician and Orthopaedic Surgeon, Buffalo Bison AAA Baseball Team
  • Adjunct Clinical Professor of Surgery, NY College of Osteopathic Medicine
  • Medical Director, Buffalo Surgery Center

Memberships

  • Fellow in the American Academy of Orthopaedic Surgeons
  • Arthroscopy Association of North America
  • American Orthopaedic Society for Sports Medicine
  • American Orthopaedic Foot and Ankle Society
  • Eastern Orthopaedic Association
  • New York State Society of Orthopaedic Surgeons
  • Western New York Orthopaedic Society
  • American Medical Association
  • Erie County Medical Society
  • The Baccelli Medical Club of Buffalo
  • American Medical Flyfishing Association
  • Erie County Medical Society

Former Positions

  • Chief of Orthopedic Surgery, Sisters Hospital
  • Team Physician, Buffalo Stampede Roller Hockey Team
  • Co-medical Director, Athleticare Sports Medicine, Kenmore Mercy Hospital
  • Orthopedic Consultant, Buffalo Sabres and Buffalo Blizzard
  • Orthopedic Surgeon, Medical Staff, World University Games, Buffalo, NY
  • Medical Director, Ford Buffalo Marathon
  • Medical Director, WNY Sportscare
  • Past President, Vice President, Secretary, Treasurer, Western New York Orthopedic Society
  • Lieutenant Commander, Medical Corps Orthopedic Surgeon, United States Naval Reserve
  • Senior Medical Officer during Operation Desert Shield and Desert Storm
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Dr. Andrew C. Stoeckl

Board-Certified Orthopaedic Surgeon

A graduate of Canisius High School, Boston College and the University at Buffalo Medical School, Dr. Stoeckl joined Excelsior Orthopaedics just after finishing a one-year Harvard Sports Medicine Fellowship, where he received advanced training in knee, shoulder, foot, and ankle injuries with an emphasis on minimally invasive arthroscopic procedures. His area of specialization is sports medicine.

Current Position

  • Private practice, Excelsior Orthopaedics
  • Team Physician Buffalo Bisons

Academic Activity/Awards

  • Casagrade Award for Outstanding Orthopaedic Resident-2003
  • Shoulder Survey: conducted survey of Sports Medicine doctors to establish trends in shoulder surgery, specifically rotator cuff pathology and instability. Submitted to the Journal of Arthroscopy

Former Positions

  • Harvard Sports Medicine Fellowship, Massachusetts General Hospital
  • Assistant team physician Harvard University
  • Assistant team physician New England Patriots
  • Assistant team physician Boston Bruins
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Excelsior Orthopaedics | Amherst: 3925 Sheridan Drive | Orchard Park: 240 Red Tail Drive, Suites 1 & 2 | (716) 250-9999 |Email