Physician Profile
Unclaimed ProfileAbout MCMAHON
Based in New Haven, CT, Jonathan McMahon, DO is listed in the NPI registry under emergency medicine. Jonathan graduated from New York College of Osteo Medicine of New York Institute of Technology in 2019. Jonathan is also listed as specialising in emergency medical services. According to Medicare claims data, Jonathan cared for 29 Medicare patients across 31 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What kind of doctor is Dr. McMahon?
Dr. McMahon is an emergency medicine in New Haven, CT. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
What is Dr. McMahon's address?
Dr. McMahon is listed at 20 YORK ST, New Haven, CT 06510. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. McMahon?
The number on file is (203) 688-4242. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. McMahon's NPI number?
Dr. McMahon's National Provider Identifier is 1801359062. 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
Where did Dr. McMahon train?
Dr. McMahon attended New York College of Osteo Medicine of New York Institute of Technology, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. McMahon been practising?
Dr. McMahon has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. McMahon perform?
According to Medicare billing data, Dr. McMahon provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. McMahon confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. McMahon. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (203) 688-4242
- Email not available
Practice Locations
20 YORK ST
New Haven, CT 06510
Procedures Most Often Billed to Medicare
31 services · 29 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
15 |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
16 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other emergency medicines at this location 1
Same specialty, same street address — most likely the same department or group.
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.
Other emergency medicines in New Haven 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at New York College of Osteo Medicine of New York Institute of Technology 8
Other providers in the same specialty who trained at the same institution.
Class of 2019 at New York College of Osteo Medicine of New York Institute of Technology 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 8
Providers in CT who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.