- Medicare Primary Care in Oxnard, CA

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is a medicare enrolled primary clinic (Internal Medicine - Nephrology) in Oxnard, California. The current practice location for is 1200 W Gonzales Rd, Suite 300, Oxnard, California. For appointments, you can reach them via phone at (805) 983-0691. The mailing address for is 1200 W Gonzales Rd, Suite 300, Oxnard, California and phone number is (805) 983-0691.

is licensed to practice in California (license number FNP4189). The clinic also participates in the medicare program and its NPI number is 1942239694. This medical practice accepts medicare insurance (which means this clinic accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance). However, please confirm if they accept your insurance at (805) 983-0691.

Contact Information

1200 W Gonzales Rd
Suite 300
Oxnard
CA 93036-3072
(805) 983-0691
(805) 981-1643

Map and Direction


Primary Care Clinic Profile

Full Name
SpecialityInternal Medicine
Location1200 W Gonzales Rd, Oxnard, California
Authorized Official Name and PositionRichard K Westerdoll (EXECUTIVE DIRECTOR)
Authorized Official Contact8059830691
Accepts Medicare InsuranceYes. This clinic participates in medicare program and accept medicare insurance.

Mailing Address and Practice Location

Mailing AddressPractice Location Address

1200 W Gonzales Rd
Suite 300
Oxnard
CA 93036-3072

Ph: (805) 983-0691
1200 W Gonzales Rd
Suite 300
Oxnard
CA 93036-3072

Ph: (805) 983-0691

NPI Details:

NPI Number1942239694
Provider Enumeration Date07/02/2006
Last Update Date11/12/2021

Medicare PECOS Information:

Medicare PECOS PAC ID1951357888
Medicare Enrollment IDO20050323001422

Medical Identifiers

Medical identifiers for such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1942239694NPI-NPPES
110039977OtherCAMEDICARE RAILROAD
ZZZ75566ZMedicaidCA
ZZZ34679ZOtherCABLUE CROSS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine FNP4189 (California)Secondary
207RN0300XInternal Medicine - Nephrology FNP4189 (California)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. acts as a billing entity for following providers:
Provider NameKoosha Mortazavi
Provider TypePractitioner - Nephrology
Provider IdentifiersNPI Number: 1215966999
PECOS PAC ID: 3274545496
Enrollment ID: I20060706000272
Provider NameRajendra P Niraula
Provider TypePractitioner - Nephrology
Provider IdentifiersNPI Number: 1922201003
PECOS PAC ID: 7214020510
Enrollment ID: I20091102000158
Provider NameSteven G Ledesma
Provider TypePractitioner - Nephrology
Provider IdentifiersNPI Number: 1386718799
PECOS PAC ID: 9436199718
Enrollment ID: I20110105000632
Provider NameTane Liu
Provider TypePractitioner - Nephrology
Provider IdentifiersNPI Number: 1588738991
PECOS PAC ID: 4880749464
Enrollment ID: I20110620000348
Provider NameAli P Dana
Provider TypePractitioner - Nephrology
Provider IdentifiersNPI Number: 1669561536
PECOS PAC ID: 4981898848
Enrollment ID: I20130906000841
Provider NameChonlada Chivangkul
Provider TypePractitioner - Nephrology
Provider IdentifiersNPI Number: 1184063570
PECOS PAC ID: 4183974256
Enrollment ID: I20180911002440

Reviews and Comments


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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.