Brennen S. Larsen, PA-C

Brennen Larsen practices at Fall River Medical in Rexburg, Idaho.

Brennen Larsen's NPI, 1740659010, was assigned on September 17, 2015. Brennen Larsen holds Arizona license 6141.

Brennen Larsen's primary practice is Fall River Medical, at 21 Winn Dr, Rexburg, ID 83440. The practice phone is (208) 881-5222.

Brennen Larsen's primary practice is Fall River Medical in Rexburg, Idaho. Brennen Larsen is also affiliated with Madison Memorial Hospital. The medical group on file is Fall River Family Medicine & Urgent Care. Dmand AI also links Brennen Larsen to 1 more group practice or clinic, named with a free account. Brennen Larsen's employer is on file too: an urgent care center.

Dmand AI tracks the electronic health record (EHR) system at each site where Brennen Larsen practices, 3 sites in all. Vendor and product names are available with a free account.

Physician assistant is Brennen Larsen's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Brennen Larsen is licensed in Arizona.

CMS counts 100 Medicare patients who saw Brennen Larsen in 2024. The largest group is 65 to 74, with 40 patients. 59% of them have high blood pressure, and 42% have arthritis. 12% are also on Medicaid. Their average risk score is 0.89, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Brennen Larsen's median patient age at 27, with 55% women.

In 2024, Brennen Larsen wrote 411 Medicare Part D claims for 123 patients. 85% of them were for generic drugs.

Brennen Larsen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 2 general payments to Brennen Larsen from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $31.