Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Allen Filbey II, AA-C

Individual provider Anesthesiologist Assistant · NPI 1245621051

William Allen Filbey II, AA-C is an Anesthesiology Assistant in Madison, Wisconsin. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2015, 11 years ago. Practices with University of Wisconsin Medical Foundation Inc, a 2,536-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
11
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
WI
In the registry since
2015
Claim this listing Report a problem Suggest an edit

Practice location Address checks out

600 Highland Ave
Madison, WI 53792-0001 Not confirmed with CMS for 11 years — call before visiting
Phone: (608) 263-8100
Fax: (608) 263-0575
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Anesthesiologist Assistant (primary) Taxonomy 367H00000X (WI)

Record details

NPI number1245621051
Entity typeIndividual (Type 1)
GenderMale
Credentials AA-C
Sole proprietorNo
NPI enumeratedFebruary 16, 2015
Last updated in NPPESMarch 19, 2015

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY ASSISTANT
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 2015 (11 years in practice)
Group practice University Of Wisconsin Medical Foundation Inc — 2536 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 patients82
Services billed 88 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 University of Wisconsin Medical Foundation Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2536 clinicians in the practice; 12 are shown here.

Other providers in Madison