St. Luke's Clinic

St. Luke's Clinic Physician Center provides experienced family practice and pediatric health care to people of all ages in the Magic Valley.

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Physician Center
2550 Addison Avenue East
Suites A, B & F
Twin Falls, Idaho 83301
(208) 814-8000
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Office Hours:
Mon - Fri, 8 a.m.-5 p.m.

We provide a wide range of services, including:

  • Women's health (non-OB)
  • Vasectomy
  • Childhood diseases
  • Diabetes management for children, adolescents, and adults
  • Pediatric behavioral health care

New Patients / Appointments
We are accepting new patients.
To contact us or to make an appointment please call
(208) 933-9300.

After-hours and Weekends
A physician is always available on call. If you have a medical emergency, please call 911 or go directly to the Emergency Department. For after-hour phone triage staffed by nurses call (208) 814-1000.

What is Family Medicine?
Family Medicine doctors are trained to care for patients of all ages, from infancy through the end of life. We promote the concept of a Medical Home, emphasizing a continuous relationship with a personal physician coordinating care for both wellness and illness.  We believe that knowing you over many years, and knowing your family, helps us understand how your health care impacts your life.

St. Luke’s Family Medicine physicians diagnose and treat most medical issues, from infections and sprains to diabetes and asthma. We also specialize in preventive care to help you create and maintain a healthy lifestyle. And when your condition requires a specialist, we can coordinate your care with other physicians and can help you navigate your way through today’s health care.

St. Luke's Clinics
St. Luke’s Clinics are an integrated network of highly skilled health care professionals in locations throughout our region. 


Our Medical Providers

Nathan Allen, DO Nathan Allen, DO is board certified in family medicine. He is fluent in Spanish and enjoys seeing patients of all ages. Dr. Allen earned his bachelor's degree in exercise science from Brigham Young University and his medical degree from A.T. Still University in Kirksville, Missouri. He completed his family medicine internship and residency in Rapid City, South Dakota, where he served as chief resident. 
Nikki Halverson, MD

Nikki Halverson, MD is board certified in family medicine. She provides care for patients of all ages and particularly enjoys women's health, including care of teens, and preventive care. She begins seeing patients May 1, 2015. Dr. Halverson earned her bachelor's degree in biology from the University of Utah and her medical degree from the Medical University of South Carolina. She completed her family medicine internship and residency training at Trident Family Medicine in Charleston, South Carolina, and worked in private practice and as a campus physician at the College of Charleston before moving to Idaho in 2007.  

Brad Hyatt, DO Brad Hyatt, DO is board certified in family medicine and particularly enjoys pediatric care. Dr. Hyatt earned his bachelor's degree from Idaho State University and his medical degree from Des Moines University. He completed his training in family medicine through Idaho State University's Family Medicine Program.
Dr. Ryan Melvin Ryan Melvin, DO is board certified in family medicine. He enjoys taking care of a broad spectrum of medical patients. His medical interests include preventative health maintenance, dermatological procedures, vasectomies, pediatrics, women's health, and geriatrics. Dr. Melvin graduated from Idaho State University with a degree in biology in 2000. He earned his doctor of osteopathic medicine degree from Midwestern University's Arizona College of Osteopathic Medicine in Glendale, Arizona in 2005. He completed his family medicine residency at Family Medicine Residency of Idaho in Boise in 2008.
Dr. Daniel Preucil Daniel Preucil, MD earned his bachelor's degree in sociology/chemistry from Hamilton College in 1991, and his medical degree from Case Western Medical School in 1996. He completed his three-year family medicine residency at St. Joseph's Hospital in Denver in 1999 before moving to Twin Falls with his wife, Dr. Jennifer Preucil, who is also a family medicine physician.
Dr. Jennifer Preucil Jennifer Preucil, MD graduated from Case Western Reserve University with a Bachelor of Science degree in chemical engineering and an interest in pharmaceuticals. She earned her medical degree from Case Western Medical School in 1996 and completed a three-year family medicine residency with an emphasis in maternal and child health at St. Joseph's Hospital in Denver. She moved to Twin Falls with her husband Dr. Daniel Preucil, who is also a family medicine physician, and has practiced in Twin Falls since 1999, continuing her interest in women's and children's health care.
Dr. David Spritzer David Spritzer, MD graduated from Western State College in Gunnison, Colorado where he majored in chemistry and biology and minored in physical education. He earned his medical degree from the University of Colorado School of Medicine in Denver in 1977 and completed an internal medicine internship and surgical residency at Naval Regional Medical Center in San Diego.
Brad Wynn, DO Brad Wynn, DO is board certified in family medicine. He enjoys caring for families with children of all ages, and performs several office-based procedures, including skin and toenail procedures, circumcision, and vasectomy. An Idaho native, Dr. Wynn earned his bachelor's degree in biology and chemistry from Brigham Young University-Idaho and his medical degree from Touro University Nevada College of Osteopathic Medicine. He completed his family medicine residency in 2012 at Sacred Heart Medical Center in Spokane, through the University of Washington. He joined St. Luke's Clinic that same year.
Erin Coppin, PA-C

Erin Coppin, PA-C practices the full scope of family medicine and is especially passionate about preventive care, women's health, and pediatrics. She earned her bachelor's and master's degrees in exercise science from Utah State University, and her master's degree in physician assistant studies from Idaho State University. Erin has been in practice since 2005.

Your Appointment
We try to stay on time, as a courtesy to you and others. Since paperwork may take a few minutes, please arrive early. As emergencies do occur, there may be occasions when your appointment time will be delayed. We will always try to keep you informed in the event of a delay, and will be happy to reschedule your appointment, if you prefer. We ask that you respect the appointment time we have reserved for you, and call 24 hours ahead to cancel or change appointments so that others may be helped during that time.

Communication with your provider is extremely important. It may be helpful for you to write down questions for your doctor or nurse practitioner prior to your visit. Bring a list of medications and the dosages, or bring the bottles with you.

Make sure you understand any instructions you are given. If clarification is needed, review your instructions with the provider or medical assistant before you leave. If you aren’t doing well after your visit, we want to hear from you. Our goal is to improve your health.

Insurance Plans
We accept most insurance plans, including Medicare, in-state Medicaid, Tricare, Blue Cross/Blue Shield, and others.

Medication Refills
Talk with your provider at each visit to be sure your prescriptions are up to date. For refills, contact your pharmacy. Your pharmacy will then contact our office for verification and approval. For patient safety, narcotics cannot be refilled outside of office hours. Talk with your provider before your prescription runs out, and please allow 48 hours for refills.

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