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AOIFE E MACMAHON MD
NPI 1366012684
Orthopaedic Surgery in San Diego, CA

Active since June 29, 2021PECOS Enrolled
4250 1ST AVE, SAN DIEGO, CA 92103(800) 926-8273 Get Directions Write a Review

NPPES record last updated: June 27, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Aoife E Macmahon Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

AOIFE E MACMAHON MD (NPI 1366012684) is an individual orthopaedic surgery provider in San Diego, California, licensed in California (A206277) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1366012684
Entity TypeIndividualFemale
Primary Taxonomy207X00000X
Provider Legal NameAOIFE E MACMAHONCredential: MD
Location Address4250 1ST AVESan Diego, CA 92103-2026
Mailing AddressFile 57326Los Angeles, CA 90074-7326 · (800) 926-8273
Phone(800) 926-8273
Sole ProprietorYes
Enumeration DateJune 29, 2021
Last NPPES UpdateJune 27, 2026
NPPES CertifiedJune 27, 2026
✔ NPI 1366012684 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in CA · A206277
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
4250 1ST AVE, San Diego, CA 92103
Open in Google Maps ↗

Secondary Practice Locations 4

Location 19400 Campus Point DrLA Jolla, CA 92093-1350 · Phone (800) 926-8273
Location 29300 Campus Point DrLA Jolla, CA 92037-1300 · Phone (800) 926-8273
Location 3200 W Arbor DrSan Diego, CA 92103-9000 · Phone (800) 926-8273
Location 4601 N Caroline StBaltimore, MD 21287-0006 · Phone (443) 997-2663

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Aoife E Macmahon Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.87 typical visit price
range $62.10 – $184.71
Typical copayment $23.71 (range $15.52 – $46.17)
Most-billed visit code 99203
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EPHU YIP-NGO PHARMD
Pharmacist
4250 1ST AVE
SAN DIEGO, CA 92103
San Diego County (415) 290-8175
CHELSY RANIE LETKO PA-C
Physician Assistant
4250 1ST AVE
SAN DIEGO, CA 92103
San Diego County (800) 926-8273
REGENTS OF THE UNIVERSITY OF CALIFORNIA
Pharmacy
4250 1ST AVE, RM 1-601
SAN DIEGO, CA 92103
San Diego County (619) 471-0230
DR. JENNIFER LAUREN SMITH MD
Orthopaedic Surgery
4250 1ST AVE
SAN DIEGO, CA 92103
San Diego County (800) 926-8273
MADELYN BERNARD RN
Registered Nurse (Administrator)
4250 1ST AVE
SAN DIEGO, CA 92103
San Diego County (858) 657-8200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Aoife Macmahon's NPI number?

The NPI number for Aoife Macmahon is 1366012684. It was assigned to this individual provider in the NPPES registry on June 29, 2021.

Where is Aoife Macmahon located?

Aoife Macmahon practices at 4250 1st Ave, San Diego, CA 92103. The listed phone number is (800) 926-8273.

What is Aoife Macmahon's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Aoife Macmahon enrolled in Medicare?

Yes. Aoife Macmahon is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Aoife Macmahon was last updated on June 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.