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

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Dr. John Cahoy treats arthralgia, arm fractures, and wrist fractures, and performs arthrogram procedures as part of their orthopedic surgery practice. They have practiced orthopedic surgery for 21 years and are affiliated with Emerson Hospital.

Dr. Cahoy earned their medical degree from Stanford University School of Medicine and sees patients in Concord, Massachusetts, and Los Angeles, California. Patients on Vitals rate Dr. Cahoy 3.71 out of 5.

Overview based on verified provider data

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 hospital affiliation
2 office locations

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Cahoy's Ratings and Reviews

3.7

7 Ratings with 6 written Reviews

Average Wait Time 10 Minutes

How was your appointment with
Dr. Cahoy?

Patients’ Perspective

Gave an accurate diagnosis: (4) Did WellNeeds Improvement (2)
Had a good bedside manner: (4) Did WellNeeds Improvement (1)
Spent time with me: (4) Did WellNeeds Improvement (1)
Provided follow-up after the visit: (4) Did WellNeeds Improvement (1)
Flexible scheduling: (4) Did WellNeeds Improvement (1)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

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

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

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.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

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.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

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.

Did Well

Needs Improvement

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

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.

Did Well

Needs Improvement

Gave an accurate diagnosis

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!

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

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. Erek Latzka, MD	Dr. Taryn Leroy, MD	Dr. Richard David Scott, MD
Orthopedic Surgery	Orthopedic Surgery	Orthopedic Surgery	Sports Medicine
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
3.7 (7 Ratings)	5 (4 Ratings)	0 (0 Ratings)	4.4 (45 Ratings)
21 Years of Experience	13 Years of Experience	13 Years of Experience	58 Years of Experience
No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option
Speaks English		Speaks English, Spanish	Speaks English, Spanish
Concord , MA	Wellesley , MA	Boston , MA	Boston , MA
Med School: Stanford University School Of Medicine	Med School: Tufts University School Of Medicine		Med School: Lewis Katz School Of Medicine At Temple University
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Orthopedic Surgery

Hip Osteoarthritis
Knee Osteoarthritis
Osteoarthritis (Hand and Wrist)

Education & Training

Medical School

Graduated from Stanford University School Of Medicine in 2005.

NPI Number

Dr. Cahoy's NPI number is 1952626350.

Nathan Charles Sherman
Sports Medicine
7 Years Exp | Boston, MA
(0)
Dr. David William Levine, MD
Public Health & General Preventive Medicine
40 Years Exp | Cambridge, MA
(0)
Dr. Adam Nasreddine, MD
Sports Medicine
8 Years Exp | Boston, MA
(0)
Dr. William W Mayo-Smith, MD
Diagnostic Radiology
42 Years Exp | Boston, MA
(6)
Dr. Rafael Kakazu, MD
Sports Medicine
12 Years Exp | Danvers, MA
(0)
Dr. Marissa Barbour Mccay, MD
Physical Medicine & Rehabilitation
12 Years Exp | Boston, MA
(0)
Julie Ann Ruane
Nurse Practitioner
| Boston, MA
(0)
Dr. Jonathan Andre Uroskie, MD
Hand Surgery
30 Years Exp | Peabody, MA
(17)
Dr. Andrew Leonard Terrono, MD
Hand Surgery
44 Years Exp | Roxbury Crossing, MA
(27)
Dr. Elisabeth Rosl Gennis, MD
Hand Surgery
15 Years Exp | North Chelmsford, MA
(2)

Which hospitals is Dr. John Cahoy affiliated with?: Dr. John Cahoy is affiliated with Emerson Hospital.
How can I make an appointment with Dr. John Cahoy?: You can find contact information for Dr. John Cahoy here on Vitals.
What languages does Dr. John Cahoy speak?: Dr. John Cahoy speaks English.
Does Dr. John Cahoy accept my insurance?: You can see the insurance plans that Dr. John Cahoy accepts on their Vitals profile.
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.

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