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Orthopaedic Surgeon, Surgical Specialist
24 years of experience
Accepting new patients
Video profile
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. John Callahan:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. John Callahan is Good. Dr. Callahan has been reviewed by 6 patients who have provided 2 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 3.7
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 3.7
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. John Callahan, MD is board certified in Orthopaedic Surgery and Orthopaedic Surgery of the Hand.

  • He has special expertise in 4 areas:
  • Dupuytren's Contracture
  • Hip Osteoarthritis
  • Knee Osteoarthritis
  • Osteoarthritis (Hand and Wrist)

Education & Awards

Dr. Callahan graduated from Upstate Medical University Physical Medicine and Rehabilitation, Syracuse.


Dr. Callahan has 13 hospital affiliations:

  • Kaleida Health - Buffalo General Hospital 
  • Catholic Health System/Kenmore Mercy Hospital 

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Additional Information
Dr. John J Callahan MD is a male Orthopaedic Surgeon, has 24 years of experience and practices in Orthopaedic Surgery and Orthopaedic Surgery of the Hand.
Where does Dr. John J. Callahan practice?
Dr. John Callahan has 1 office location.
Dr. John Callahan practices Orthopaedic Surgery and Orthopaedic Surgery of the Hand near Buffalo, NY.
See Buffalo Orthopedic Surgeons and Buffalo Surgeons.