Dr. John David Cahoy, MD, PhD
- Medicare services, 2024
- 38
- Medicare patients, 2024
- 42
- Hospital affiliations
- 1
- Industry payments
- $190
- Medical group
- 1
- Practice address
- 54 Baker Avenue Ext, Concord, MA 01742
- Practice phone
- Call (978) 369-5391
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Orthopedic Affiliates Inc
Concord, Massachusetts
Find Dr. Cahoy's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John David Cahoy is a pediatric orthopaedic surgery physician in Concord, Massachusetts
Dr. Cahoy practices at Orthopedic Affiliates Inc in Concord, Massachusetts.
Dr. Cahoy's NPI, 1952626350, was assigned on March 30, 2010. Dr. Cahoy graduated from Stanford University School of Medicine in 2010. Dr. Cahoy holds Massachusetts license 266960.
- NPI
- 1952626350NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395902654
- NPI enumeration date
- March 30, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 369-5391
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John David Cahoy practices at Orthopedic Affiliates Inc in Concord, Massachusetts
Dr. Cahoy's primary practice is Orthopedic Affiliates Inc, at 54 Baker Avenue Ext, Concord, MA 01742 in Middlesex County. The practice phone is (978) 369-5391.
- Orthopedic Affiliates Inc54 Baker Avenue Ext, Concord, MA 01742 · Middlesex CountyPhone(978) 369-5391
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John David Cahoy is affiliated with 3 sites of care and 1 medical group
Dr. Cahoy's primary practice is Orthopedic Affiliates Inc in Concord, Massachusetts. Dr. Cahoy is also affiliated with Emerson Hospital. The medical group on file is Orthopedic Affiliates Joint and Sports Medicine Center. Dmand AI also links Dr. Cahoy to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John David Cahoy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cahoy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orthopedic Affiliates Inc | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John David Cahoy is one of 22 pediatric orthopaedic surgery physicians in Massachusetts
Pediatric orthopaedic surgery is Dr. Cahoy's primary specialty in the NPI Registry, under taxonomy code 207XP3100X. Dr. Cahoy is licensed in Massachusetts.
Specialties and state licenses
- Pediatric orthopaedic surgery, MassachusettsPrimary
Pediatric orthopaedic surgery physicians near Dr. Cahoy
Counts of pediatric orthopaedic surgery physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John David Cahoy billed Medicare for 38 services in 2024
CMS data shows 38 Medicare services from Dr. Cahoy across 2 procedure codes in 2024, for 42 Medicare patients. Medicare paid $3,945 for them.
Dr. Cahoy's Medicare services by type, 2021 to 2024
- 2021
- 2024
- Office and hospital visits
- 2021: 172024: 38124%
Where Dr. Cahoy's Medicare services took place, 2024
- In an office2155%
- In a facility1745%
Dr. Cahoy's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. John David Cahoy treated 42 Medicare patients in 2024, average age 82
CMS counts 42 Medicare patients who saw Dr. Cahoy in 2024. The largest group is 85 and over, with 17 patients. 75% of them have arthritis, and 64% have high blood pressure. Their average risk score is 1.47, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Cahoy's median patient age at 15, with 50% women.
Dr. Cahoy's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Cahoy's Medicare patients, 2024
- Arthritis75%
- High blood pressure64%
- High cholesterol64%
- Anxiety43%
- Chronic kidney disease36%
- Heart failure36%
- Ischemic heart disease33%
- COPD31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Cahoy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 15
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. John David Cahoy takes part in Medicare
Dr. Cahoy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John David Cahoy received $190 in industry payments from 2016 to 2024
CMS Open Payments shows 6 general payments to Dr. Cahoy from 5 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Orthopediatrics Corp paid the most, $90.
General payments to Dr. Cahoy by program year, 2016 to 2024
Companies that paid Dr. Cahoy the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John David Cahoy graduated from Stanford University School of Medicine
Dr. Cahoy graduated from Stanford University School of Medicine in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John David Cahoy's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John David Cahoy
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John David Cahoy's NPI number?
Dr. John David Cahoy's NPI number is 1952626350. It was assigned on March 30, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. John David Cahoy?
Dr. John David Cahoy is a pediatric orthopaedic surgery physician in Concord, Massachusetts. The primary specialty in the NPI Registry is Pediatric Orthopaedic Surgery Physician (taxonomy code 207XP3100X).
Where does Dr. John David Cahoy practice?
Dr. Cahoy practices at 54 Baker Avenue Ext, Concord, MA 01742. Dr. Cahoy's primary practice is Orthopedic Affiliates Inc in Concord, Massachusetts. Dmand AI also links Dr. Cahoy to 1 group practice or clinic.
What is Dr. John David Cahoy's office phone number?
The practice phone on file for Dr. Cahoy is (978) 369-5391.
What is Dr. John David Cahoy's medical license number?
Dr. Cahoy holds Massachusetts license 266960.
Which hospitals is Dr. John David Cahoy affiliated with?
Dr. Cahoy is affiliated with Emerson Hospital.
What medical group is Dr. John David Cahoy part of?
Dr. Cahoy is linked to Orthopedic Affiliates Joint and Sports Medicine Center.
Does Dr. John David Cahoy accept Medicare?
Yes. CMS data shows Dr. Cahoy billed Medicare for 38 services in 2024, and Dr. Cahoy accepts Medicare assignment.
How many Medicare patients does Dr. John David Cahoy see?
CMS counts 42 Medicare patients who saw Dr. Cahoy in 2024, with an average age of 82.
What services does Dr. John David Cahoy bill to Medicare?
In 2024, Dr. Cahoy's most billed Medicare services were office visit, established patient (99213) and hospital inpatient care (99223).
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Where did Dr. John David Cahoy go to medical school?
Dr. Cahoy graduated from Stanford University School of Medicine in 2010.
Has Dr. John David Cahoy received payments from drug or device companies?
CMS Open Payments shows $190 in general payments to Dr. Cahoy from 5 companies from 2016 to 2024. The largest total came from Orthopediatrics Corp.
How long has Dr. John David Cahoy been practicing?
Dr. Cahoy graduated from medical school in 2010, 16 years ago.
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