Physician Profile
John D. Cahoy, M.D./PH.D.
Unclaimed ProfileAbout Dr. Cahoy
Based in Concord, MA, John D. Cahoy, M.D./PH.D. is listed in the NPI registry under pediatric orthopaedic surgery. John graduated from Stanford University School of Medicine in 2010. John is also listed as specializing in orthopaedic surgery. According to Medicare claims data, John cared for 31 Medicare patients across 38 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more and initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (978) 369-5391
- Email not available
Practice Locations
54 BAKER AVENUE EXT SUITE 200
Concord, MA 01742
Procedures Most Often Billed to Medicare
38 services · 31 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
21 | Less often than most peers in Pediatric Orthopaedic Surgery |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
17 | Too few peers to compare |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Stanford University School of Medicine 1
Other providers in the same specialty who trained at the same institution.
Class of 2010 at Stanford University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is John D. Cahoy's specialty?
John D. Cahoy is a pediatric orthopaedic surgeon in Concord, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pediatric Orthopaedic Surgery”.
NPI registry
Where can I find John D. Cahoy?
John D. Cahoy is listed at 54 Baker Avenue Ext Suite 200, Concord, MA 01742. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact John D. Cahoy?
The number on file is (978) 369-5391. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is John D. Cahoy's NPI number?
John D. Cahoy's National Provider Identifier is 1952626350. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is John D. Cahoy's education?
John D. Cahoy attended Stanford University School of Medicine, graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
How long has John D. Cahoy been practicing?
John D. Cahoy has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
What is John D. Cahoy known for?
According to Medicare billing data, John D. Cahoy the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has John D. Cahoy confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John D. Cahoy. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.