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

Brian J Frederick, MD

Individual provider Hospitalist Physician · NPI 1992025605

Brian J Frederick, MD is a Hospitalist in Eau Claire, Wisconsin. Graduated from University of Wisconsin School of Medicine in 2010, 16 years ago. Practices with Mayo Clinic Health System-Northwest Wisconsin Region Inc, a 799-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
16
Trained at
University of Wisconsin School of Medicine
Licensed in
WI
In the registry since
2010
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1221 Whipple St
Eau Claire, WI 54703-5200
Phone: (715) 838-5222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 700 S Park St, Madison, WI 53715-1830 — (608) 251-6100

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 61029-20 (WI)

Record details

NPI number1992025605
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 3, 2010
Last updated in NPPESOctober 4, 2022
Certification dateOctober 4, 2022

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Mayo Clinic Health System-Northwest Wisconsin Region Inc — 799 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients238
Services billed 984 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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. Those with a page here are linked.

  • Mayo Clinic Health System-Red Cedar Inc Hospital · Menomonie, WI · listed as Mayo Clinic Health System-Northwest Wisconsin Region, Inc
  • Mayo Clinic Health System Chippewa Valley Hospital · Bloomer, WI
  • Mayo Clinic Health System Eau Claire Hospital Hospital · Eau Claire, WI

Colleagues at Mayo Clinic Health System-Northwest Wisconsin Region Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 799 clinicians in the practice; 12 are shown here.

Other providers in Eau Claire