Julia Alexa Ondarza, PA-C - Medicare Physician Assistant in Walnut Creek, CA

  1. Home
  2. Physician Assistant
  3. CA
  4. Walnut Creek
Julia Alexa Ondarza, PA-C is a medicare enrolled "Physician Assistant" in Walnut Creek, California. She graduated from nursing school in 2019 and has 7 years of diverse experience with area of expertise as Physician Assistant. She is a member of the group practice Nextgen Rpm Llc, Brandon Mccutcheon Md Pc, Stanford Health Care and her current practice location is 2637 Shadelands Dr, Walnut Creek, California. You can reach out to her office (for appointments etc.) via phone at (925) 430-5335.

Julia Alexa Ondarza is licensed to practice in California (license number 60191) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1013537794.

Contact Information

Julia Alexa Ondarza, PA-C
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512
(925) 430-5335
(925) 430-5446

Map and Direction




Provider's Profile

Full NameJulia Alexa Ondarza
GenderFemale
SpecialityPhysician Assistant
Experience7 Years
Location2637 Shadelands Dr, Walnut Creek, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Julia Alexa Ondarza graduated from nursing school in 2019
  NPI Data:
  • NPI Number: 1013537794
  • Provider Enumeration Date: 04/22/2020
  • Last Update Date: 10/29/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 0749600476
  • Enrollment ID: I20211111000412

Medical Identifiers

Medical identifiers for Julia Alexa Ondarza such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1013537794NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363A00000XPhysician Assistant 60191 (California)Primary
363AM0700XPhysician Assistant - Medical 60191 (California)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Stanford Health CareStanford, CAHospital
John Muir Medical Center - Walnut Creek CampusWalnut creek, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Nextgen Rpm Llc11536669046
Brandon Mccutcheon Md Pc52941987685
Stanford Health Care67097974913152

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Julia Alexa Ondarza allows following entities to bill medicare on her behalf.
Entity NameStanford Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437292927
PECOS PAC ID: 6709797491
Enrollment ID: O20031124000348
Entity NameLpch Medical Group Div of Lucile
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417907940
PECOS PAC ID: 0840298543
Enrollment ID: O20061113000232
Entity NameBass Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174253405
PECOS PAC ID: 9032111281
Enrollment ID: O20070201000181
Entity NameNextgen Rpm
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336674316
PECOS PAC ID: 1153666904
Enrollment ID: O20210316001017
Entity NameBrandon Mccutcheon MD PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649053851
PECOS PAC ID: 5294198768
Enrollment ID: O20230830004229

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Julia Alexa Ondarza is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Julia Alexa Ondarza, PA-C
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512

Ph: (925) 430-5335		Julia Alexa Ondarza, PA-C
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512

Ph: (925) 430-5335

Reviews and Comments


Physician Assistant Nurses in Walnut Creek, CA

Ali Hussain Mithani, PA-C
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 130 La Casa Via Ste 210, Walnut Creek, CA 94598
Phone: 925-309-5155    
Lora Mina Rancourt, PA-C
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 2625 Shadelands Dr, Walnut Creek, CA 94598
Phone: 925-939-8585    
Haley Nichole Folta, PA-C
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
Phone: 813-302-8000    
Jennifer Price,
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 1450 Treat Blvd Ste 250b, Walnut Creek, CA 94597
Phone: 925-296-9740    
Mr. James Quintella, PA-C
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 301 Lennon Ln Ste 100, Walnut Creek, CA 94598
Phone: 925-944-0110    Fax: 925-944-0960
Jodi Reynolds, P.A.
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 1425 S Main St, Walnut Creek, CA 94596
Phone: 925-295-4130    
Alexandra Alabata Ingram, P.A.
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 355 Lennon Ln, Suite 295, Walnut Creek, CA 94598
Phone: 925-357-9786    Fax: 925-217-7956

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.