JULIA ALEXA ONDARZA PA-C
NPI 1013537794
Physician Assistant in Walnut Creek, CA
About Julia Alexa Ondarza Pa-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JULIA ALEXA ONDARZA PA-C (NPI 1013537794) is an individual physician assistant in Walnut Creek, California, licensed in California (60191) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
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.
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Julia Alexa Ondarza Pa-c 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
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 Julia Ondarza's NPI number?
The NPI number for Julia Ondarza is 1013537794. It was assigned to this individual provider in the NPPES registry on April 22, 2020.
Where is Julia Ondarza located?
Julia Ondarza practices at 2637 Shadelands Dr, Walnut Creek, CA 94598. The listed phone number is (925) 430-5335.
What is Julia Ondarza's specialty?
The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.
Is Julia Ondarza enrolled in Medicare?
Yes. Julia Ondarza 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.
When was this NPI record last updated?
The NPPES record for Julia Ondarza was last updated on October 29, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.
