AOIFE E MACMAHON MD
NPI 1366012684
Orthopaedic Surgery in San Diego, CA
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, maintains 4 additional practice locations, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Aoife E Macmahon Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Aoife Macmahon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 93 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Aoife Macmahon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aoife Macmahon reassigns Medicare benefits to Regents Of The University Of California (San Diego, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aoife Macmahon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
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 3 months 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.
# Aoife E Macmahon, MD · NPI 1366012684
Orthopaedic Surgery physician in San Diego, California. Individual provider, active in the CMS NPPES registry since June 29, 2021.
## Identity
- **NPI:** 1366012684 (Entity type: Individual)
- **Enumerated:** June 29, 2021
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** A206277 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4250 1ST AVE, San Diego, CA 92103-2026
- **Phone:** (800) 926-8273
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Regents Of The University Of California (NPI 1225130677, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** June 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1366012684) · Data from the CMS NPPES public registry.