Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. William Matthias Cusick, DO

Individual provider Family Medicine Physician · NPI 1992754113

Dr. William Matthias Cusick, DO is registered under Family Practice in Oxnard, California. Graduated from College of Osteo Med of the Pacific at Pomona in 1996, 30 years ago. Practices with County of Ventura, a 274-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
30
Trained at
College of Osteo Med of the Pacific at Pomona
Licensed in
CA
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1690 Universe Cir
Oxnard, CA 93033-2441
Phone: (805) 204-9135
Fax: (805) 204-5286
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 133 W Santa Clara St, Ventura, CA 93001-2543 — (805) 641-5600

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A7059 (CA)

Record details

NPI number1992754113
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 6, 2006
Last updated in NPPESJuly 11, 2023
Certification dateJuly 11, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolCOLLEGE OF OSTEO MED OF THE PACIFIC AT POMONA
Graduated 1996 (30 years in practice)
Group practice County Of Ventura — 274 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients64
Services billed 97 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at County of Ventura

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 274 clinicians in the practice; 12 are shown here.

Other providers in Oxnard