Physician Profile
No biography has been added yet. Is this you? Claim this profile to add one.
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.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
4250 1ST AVE
San Diego, CA 92103
9400 Campus Point Dr
La Jolla, CA 92093
9300 Campus Point Dr
La Jolla, CA 92037
200 W Arbor Dr
San Diego, CA 92103
601 N Caroline St
Baltimore, MD 21287
Dr. Macmahon is an orthopaedic surgeon in San Diego, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopaedic Surgery”.
NPI registry
Dr. Macmahon is listed at 4250 1St Ave, San Diego, CA 92103. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (800) 926-8273. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Macmahon's National Provider Identifier is 1366012684. 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
Dr. Macmahon has 5+ years experience. Registered with an NPI since 2021. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Macmahon. 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.