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

Mandy Nguyen

Individual provider Family Medicine Physician · NPI 1548849979

Mandy Nguyen is registered under Family Practice in Costa Mesa, California. Graduated from Marian University College of Osteopathic Medicine in 2021, 5 years ago. Practices with Hoag Clinic, a 443-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
5
Trained at
Marian University College of Osteopathic Medicine
Licensed in
CA
In the registry since
2021
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Practice location Address checks out

1190 Baker St Ste 100
Costa Mesa, CA 92626-4105
Phone: (949) 791-3250
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A21480 (CA)

Record details

NPI number1548849979
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedApril 4, 2021
Last updated in NPPESAugust 12, 2024
Certification dateAugust 12, 2024

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMARIAN UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2021 (5 years in practice)
Group practice Hoag Clinic — 443 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients65
Services billed 127 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 $119 1 payment · 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.

Colleagues at Hoag Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 443 clinicians in the practice; 12 are shown here.

Other providers in Costa Mesa