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TAMARA O'NAN PA-C
NPI 1477837862
Physician Assistant in Newport Beach, CA

Active since October 04, 2011PECOS Enrolled
1401 DOVE ST STE 420, NEWPORT BEACH, CA 92660(949) 945-0927(949) 269-6263 Get Directions Write a Review

NPPES record last updated: March 12, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 12, 2025, Mar 29, 2023 (2 updates tracked since 2023).

About Tamara O'nan Pa-c NPPES

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

TAMARA O'NAN PA-C (NPI 1477837862) is an individual physician assistant in Newport Beach, California, licensed in California (PA21869) and active in the NPI registry since October 2011. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477837862
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameTAMARA O'NANCredential: PA-C
Location Address1401 DOVE ST STE 420Newport Beach, CA 92660-2420
Mailing AddressPo Box 3699Newport Beach, CA 92659-8699 · (657) 241-3600 · Fax (657) 241-7708
Phone(949) 945-0927
Fax(949) 269-6263
Sole ProprietorNo
Enumeration DateOctober 4, 2011
Last NPPES UpdateMarch 12, 20252 updates tracked since enumeration
NPPES CertifiedMarch 12, 2025
✔ NPI 1477837862 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · PA21869
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Also ListedPhysician Assistant · MedicalTaxonomy 363AM0700X · License PA21869 (CA)
1401 DOVE ST STE 420, Newport Beach, CA 92660
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Other Identifiers 1

OtherP01199945CA · Medicare Railroad

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tamara O'nan Pa-c 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 92660 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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.

DR. HADI ESTAKHRI M.D.
Psychiatry & Neurology (Psychiatry)
1401 DOVE ST STE 420
NEWPORT BEACH, CA 92660
Orange County (949) 945-0927
MARIAM FAZIL-NAGEER PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
1401 DOVE ST STE 420
NEWPORT BEACH, CA 92660
Orange County (949) 945-0927
ALLIED PSYCHIATRY AND MENTAL HEALTH
Psychiatry & Neurology (Psychiatry)
1401 DOVE ST STE 420
NEWPORT BEACH, CA 92660
Orange County (949) 945-0927
TANVI PATEL
Psychologist (Clinical)
1401 DOVE ST STE 420
NEWPORT BEACH, CA 92660
Orange County (949) 945-0927
DR. MELANIE DIANE MURUA PSY.D.
Psychologist (Clinical)
1401 DOVE ST STE 420
NEWPORT BEACH, CA 92660
Orange County (949) 220-2566

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 Tamara O'nan's NPI number?

The NPI number for Tamara O'nan is 1477837862. It was assigned to this individual provider in the NPPES registry on October 4, 2011.

Where is Tamara O'nan located?

Tamara O'nan practices at 1401 Dove St Ste 420, Newport Beach, CA 92660. The listed phone number is (949) 945-0927.

What is Tamara O'nan's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Tamara O'nan enrolled in Medicare?

Yes. Tamara O'nan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Tamara O'nan was last updated on March 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.