Karen Chestnut, FNP - Medicare Nurse Practitioner in Oxnard, CA

Karen Chestnut, FNP is a medicare enrolled "Nurse Practitioner - Family" in Oxnard, California. She graduated from nursing school in 2012 and has 12 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Richard David Griffith Md Inc and her current practice location is 1600 N Rose Ave, Oxnard, California. You can reach out to her office (for appointments etc.) via phone at (805) 550-4478.

Karen Chestnut is licensed to practice in California (license number 22385) 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 1144577347.

Contact Information

Karen Chestnut, FNP
1600 N Rose Ave,
Oxnard, CA 93030-3722
(805) 550-4478
Not Available

Map and Direction




Provider's Profile

Full NameKaren Chestnut
GenderFemale
SpecialityNurse Practitioner
Experience12 Years
Location1600 N Rose Ave, Oxnard, 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:
  • Karen Chestnut graduated from nursing school in 2012
  NPI Data:
  • NPI Number: 1144577347
  • Provider Enumeration Date: 08/07/2012
  • Last Update Date: 09/20/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 4486802097
  • Enrollment ID: I20120924000192

Medical Identifiers

Medical identifiers for Karen Chestnut such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144577347NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family 22385 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
French Hospital Medical CenterSan luis obispo, CAHospital
Sierra Vista Regional Medical CenterSan luis obispo, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Richard David Griffith Md Inc54960207454

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. Karen Chestnut allows following entities to bill medicare on her behalf.
Entity NameCep America - California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548667843
PECOS PAC ID: 6103739131
Enrollment ID: O20040121000458
Entity NameRichard David Griffith Md Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790201226
PECOS PAC ID: 5496020745
Enrollment ID: O20171012001240
Entity NameWilshire Connected Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104392885
PECOS PAC ID: 5890038558
Enrollment ID: O20190521000171
Entity NameDr Dave Griffith Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720732597
PECOS PAC ID: 8729473061
Enrollment ID: O20220323000508

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. Karen Chestnut 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
Karen Chestnut, FNP
537 Jeffrey Dr,
San Luis Obispo, CA 93405-1003

Ph: (805) 550-4478
Karen Chestnut, FNP
1600 N Rose Ave,
Oxnard, CA 93030-3722

Ph: (805) 550-4478

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.