Dr. John D. Cahoy, MD | Concord, MA | Orthopedic Surgery

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Dr. John Cahoy specializes in orthopedic surgery, focusing on diagnosing and treating conditions affecting bones, joints, and muscles. They earned their medical degree from Stanford University School of Medicine and bring 21 years of experience to their practice. Dr. Cahoy is fluent in English.

Dr. Cahoy practices at Emerson Hospital and sees patients in Concord, Massachusetts, and Los Angeles, California. They commonly treat joint pain and knee discomfort, along with arm fractures. Their approach includes physical therapy to help patients regain strength and mobility, and they use extremity X-rays to accurately diagnose bone and joint problems. Patients have given Dr. Cahoy an average rating of 3.7 out of 5 stars.

AI-generated from data on this provider profile.

accepting new patients
3.7

7 Ratings
21 years of experience
43 insurance plans accepted
speaks English
Stanford University School Of Medicine
6 written reviews
1 specialty
3 areas of expertise
1 board certification
1 hospital affiliation
2 office locations

7 ratings & reviews

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Showing 1 to 6 of 6 reviews

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He’s worked with one of my girls when she was very little and recently was talking to a friend about my daughter’s ankle injury and he 100% recommended Dr. Cahoy and he’s now working with my other daughter with her scoliosis and he told me all I needed to know and gave me choices as well as having in two more opinions from other people he works with. Am glad to have him work with my daughter. The office staff were very friendly and helpful. Thank you

January 18th, 2026

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Dr. Cahoy is our daughter’s orthopedic physician for her scoliosis. He is always professional, detailed and takes his time answering all of our questions. We are so happy to have our daughter under his care. The office staff is also welcoming and organized. We highly recommend Dr. Cahoy.

January 12th, 2026

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We love Dr. Cahoy! He has taken care of all the injuries my daughter has unfortunately gotten from gymnastics. My daughter as well enjoys his care. He is fun and kind, makes the injury a bit lighter through his humor.

December 18th, 2025

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Rude, unprofessional and spoke to me very condescending. Seemed bothered that I was there for my daughters care. Told me how useless PT would be for my daughters condition and then recommended PT. Will be seeking care elsewhere.

November 7th, 2022

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My 9 year old daughter (gymnast) who complained of back pain was not only misdiagnosed and he did not order the proper diagnostic testing. He also referred her to her primary doctor (I don't know any specialist that would refer to a primary doctor). Thankfully, I brought her to Boston Children's Hospital and her new doctor was confident that it was a stress fracture and sent her for an MRI. She is now in a back brace with a stress fracture of L5. Dr. Cahoy should not be practicing as a specialist.

November 19th, 2019

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after years and years of different orthopedics for all 5 members of my family, we feel so incredibly grateful to have found dr. cahoy for all of us. he cares, he understands athletes, he spends time with you and listens and he works very closely with his physical therapists. the office is well run and communication is easy. very happy!

May 1st, 2018

Orthopedic Affiliates Inc

54 Baker Avenue Ext Ste 200Concord, MA 01742

Tel: (978) 369-5391

Mon8:00 am - 5:00 pm

Tue8:00 am - 5:00 pm

Wed8:00 am - 5:00 pm

Thu8:00 am - 5:00 pm

Fri8:00 am - 5:00 pm

SatClosed

SunClosed

Childrens Hospital Los Angeles

4650 W Sunset BlvdLos Angeles, CA 90027

Tel: (323) 361-6177


Dr. John David Cahoy, MD	Dr. Taryn Elizabeth Leroy, MD	Dr. Erek Latzka, MD	Dr. Gabriel Stephen Perrone
Orthopedic Surgery	Orthopedic Surgery	Orthopedic Surgery	Orthopedic Spine Surgery
Accepts New Patients	Accepts New Patients	Accepts New Patients
3.7 (7 Ratings)	0 (0 Ratings)	5 (4 Ratings)	0 (0 Ratings)
21 Years of Experience	13 Years of Experience	13 Years of Experience	7 Years of Experience
No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option
Speaks English	Speaks English, Spanish
Concord , MA	Boston , MA	Wellesley , MA	Boston , MA
Med School: Stanford University School Of Medicine		Med School: Tufts University School Of Medicine	Med School: Tufts University School Of Medicine
Current Profile	View Profile	View Profile	View Profile

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Orthopedic Surgery

Hip Osteoarthritis
Knee Osteoarthritis
Osteoarthritis (Hand and Wrist)

EDUCATION & TRAINING

Medical School

Stanford University School Of MedicineGraduated in 2005

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Does Dr. John Cahoy accept my insurance?: You can see the insurance plans that Dr. John Cahoy accepts on their Vitals profile.
Does Dr. John Cahoy accept virtual/telehealth appointments?: Dr. John Cahoy has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. John Cahoy's office located?: Dr. John Cahoy's office is located at 54 Baker Avenue Ext Ste 200, Concord, MA, 01742.
What languages does Dr. John Cahoy speak?: Dr. John Cahoy speaks English.
Is Dr. John Cahoy accepting new patients?: Dr. John Cahoy is accepting new patients on Vitals. View Dr. John Cahoy's profile on Vitals to make an appointment.

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