Zach Deffinbaugh, DNP, FNP

Urgent Care

Related Programs
Member of St. Peter's Medical Group

About Me

Zach Deffinbaugh, DNP, FNP earned his Doctorate of Nursing Practice as a Family Nurse Practitioner from Montana State University in Bozeman, Mont., and earned his Bachelor’s of Arts in Nursing from Concordia College in Moorhead, Minn.

A Montana native, Zach enjoys backpacking, hunting and fishing. Zach, his wife, Kaley, and their daughter, Grace, live on a “mini-farm” that includes chickens, a greenhouse, a small apple orchard and a large garden. He is involved with various aspects of his church. Zach is also a Captain in the United States Army Reserves, where he serves as a Family Nurse Practitioner and previously as a Combat Medic since 2006.

Education & Training

Post Graduate

Montana State University

Board Certifications

American Nurses Credentialing Center


St. Peter’s Health accepts most major insurances. To verify that your insurance is accepted, contact the clinics’ Central Business Office at 406-447-2828.   

Patients are expected to furnish all the necessary health insurance information and sign the medical release and insurance assignment authorizations. St. Peter’s Health will submit complete insurance claims on the appropriate forms for the charges recorded. 

Keep in mind that insurance is a contract between the patient and his or her insurance company and that St. Peter’s Health is acting only as a billing agent. St. Peter’s Health cannot pursue payment from insurance carriers in the event of non-payment or benefit denials. If a patient’s insurance carrier has not submitted payment within 30 days of billing, St. Peter’s Health expects the patient to pay the balance in full. Patients receive a monthly statement showing any account activity and the remaining balance due.