Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Alicia M Nakahara, PA-C

Individual provider Physician Assistant · NPI 1821646142

Alicia M Nakahara, PA-C is a Physician Assistant in Orange, California. Qualified in 2019, 7 years ago. Practices with Orthopaedic Specialty Institute Medical Group of Orange County, a 63-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Licensed in
CA
In the registry since
2019
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

280 S Main St Ste 200
Orange, CA 92868-3852
Phone: (714) 634-4567
Fax: (714) 634-4569
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA57127 (CA)

Record details

NPI number1821646142
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorYes
NPI enumeratedAugust 29, 2019
Last updated in NPPESOctober 16, 2023
Certification dateOctober 16, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Orthopaedic Specialty Institute Medical Group Of Orange County — 63 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients37
Services billed 219 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,037 30 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Hoag Orthopedic Institute Hospital · Irvine, CA · listed as Hoag Orthopedic Institute LLC
  • Providence St. Joseph Hospital Hospital · Orange, CA

Colleagues at Orthopaedic Specialty Institute Medical Group of Orange County

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 63 clinicians in the practice; 12 are shown here.

Other providers in Orange