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

Tam DO

Individual provider Nurse Practitioner · NPI 1801426192

Tam DO is a Nurse Practitioner in Costa Mesa, California. Qualified in 2021, 5 years ago. Practices with Prohealth Partners, a Medical Group, a 234-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
5
Licensed in
CA
In the registry since
2020
Specialties on file
3
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Practice location Address checks out

2900 Bristol St Ste B205
Costa Mesa, CA 92626-5948
Phone: (949) 274-4323
Fax: (949) 274-4323
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 18111 Brookhurst St Ste 5400, Fountain Valley, CA 92708-6728 — (949) 274-4323
  • 24451 Health Center Dr, Laguna Hills, CA 92653-3689 — (949) 837-4500

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 95017595 (CA)
Nurse Practitioner Taxonomy 363L00000X · Licence 95017595 (CA)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 95017595 (CA)

Record details

NPI number1801426192
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedJanuary 25, 2020
Last updated in NPPESApril 5, 2025
Certification dateApril 5, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Prohealth Partners, A Medical Group — 234 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 $19 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.

Colleagues at Prohealth Partners, a Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 234 clinicians in the practice; 12 are shown here.

Other providers in Costa Mesa