Dr William John Shaffer, OD - Medicare Optometrist in Oxnard, CA

Dr William John Shaffer, OD is a medicare enrolled "Optometrist" provider in Oxnard, California. He went to Southern College Of Optometry and graduated in 1973 and has 51 years of diverse experience with area of expertise as Optometry. His current practice location is 340 S 5th St, Oxnard, California. You can reach out to his office (for appointments etc.) via phone at (805) 487-6363.

Dr William John Shaffer is licensed to practice in California (license number 5774T) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1457451031.

Contact Information

Dr William John Shaffer, OD
340 S 5th St,
Oxnard, CA 93030-7043
(805) 487-6363
(805) 486-9698

Map and Direction




Healthcare Provider's Profile

Full NameDr William John Shaffer
GenderMale
SpecialityOptometry
Experience51 Years
Location340 S 5th St, Oxnard, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr William John Shaffer attended and graduated from Southern College Of Optometry in 1973
  NPI Data:
  • NPI Number: 1457451031
  • Provider Enumeration Date: 09/24/2006
  • Last Update Date: 05/14/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 7517076813
  • Enrollment ID: I20101022000678

Medical Identifiers

Medical identifiers for Dr William John Shaffer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1457451031NPI-NPPES
SD0057742MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
152W00000XOptometrist 5774T (California)Primary

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. Dr William John Shaffer 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
Dr William John Shaffer, OD
340 S 5th St,
Oxnard, CA 93030-7043

Ph: (805) 487-6363
Dr William John Shaffer, OD
340 S 5th St,
Oxnard, CA 93030-7043

Ph: (805) 487-6363

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.