Phone: 970.963.3350

Appointments RFFP Button
  • Appointment Scheduling

    By Phone:

    • Carbondale: 970.963.3350
    • Basalt: 970.384.7115


    After Hours & Clinical Advice: 970.963.3350

    As a member of our Medical Home, you are provided with an on-call provider who can assist you after hours and on weekends. We encourage you to utilize us as your first call for any questions or concerns regarding your care. Our answering service will promptly connect you.

  • Patient Portal

    Andrew W. Gisleson, DO
    Medicine has always been a calling for me and I grew up with a sense of helping others. I was a typical Midwestern kid living in the farming community of Osage, Iowa, where the values of hard work, respect and giving back were instilled at an early age. I received a Bachelor of Arts from Luther College in Decorah, Iowa, and my medical degree from Des Moines University, where I chose my emphasis in primary care. As a family medicine physician my broad training allows me to care for newborns to older adults and everyone in between, and I enjoy using this broad knowledge base to solve daily puzzles and adapt to an ever-changing pace. As a physician in the community I have the opportunity to be a leader in the town I serve, just as my own mentors were in my life. My wife and I have three dogs and two cats, and feel fortunate to live here. I like to hike, run, road bike, golf, ski and sing.

    Andrew W. Gisleson, DO

  • Gary D. Knaus, MD
    I am an area native who began practicing here in 1978 after training at the University of Colorado Medical School and completing my Family Medicine Residency in Greeley. I love being active in our community – one example is I am a founding member of the Mount Sopris Nordic Council. My wife, Jill, teaches Spanish at Roaring Fork High School. Our family includes daughter, Megan; son Chad, and his wife, Lori; and two grandchildren. In 2000, I was awarded the Walking Stick Award by the University of Colorado as the outstanding Rural Colorado Family Physician.

    Gary D. Knaus, MD

  • Kimball J. Spence, DO
    I came to Carbondale in 1992, joining doctors Herrington and Knaus at RFFP. The practice was perfect with obstetrics, pediatrics, and a nice blend of urgent and preventative care. I had just completed my family medicine residency at the University of Nevada, Reno and prior to that, internship at Presbyterian/St. Luke’s hospital in Denver. Before medical school at Des Moines University College of Osteopathic Medicine, I spent six years as a Forester, ski patrolman and paramedic in Flagstaff Arizona. I strive to maintain a personal relationship and health partnership with patients. Finding a balance between listening and advising, touch and technology, and helping people achieve their peak health potential is my continued passion. My family and I have embraced the Roaring Fork Valley, its fine lifestyle and the many wonderful, diverse, and remarkable people living and working here. It has been a pleasure to be a part of this community, and a privilege to provide medical guidance and care to people of all ages.

    Kimball J. Spence, DO

  • Daniel J. Smith, DO
    I graduated from the Philadelphia College of Osteopathic Medicine. I did my residency at St. Joseph Hospital in Denver where I met my wife, Diane, who was an ICU nurse there. We spent several years working in Rifle where I worked as a family practitioner and now we live in New Castle with three high-school aged boys. Being a part of the RFFP team allows me to have the time to really listen to my patients. Care needs to be made personal for each individual.

    Daniel J. Smith, DO

  • Elizabeth F. Spidell, DO
    I joined Roaring Fork Family Practice in 2010. I grew up in Glenwood Springs and as a young child often found myself at Valley View Hospital; my father was the local pediatrician and I loved tagging along while he saw babies in the nursery. I was drawn to family medicine because of my interest in caring for the whole patient, and often the whole family. I enjoy working with patients of all ages and backgrounds (from infants to the elderly). With each person in my care I take time to listen, and to make a true connection; and then we work together towards health care goals.

    I received my training in Family Medicine at St. Joseph Hospital in downtown Denver, and went to medical school in Pomona, California at Western University. Before attending medical school I lived for a year in the Pacific Islands and Nepal teaching English. I also studied Spanish in Guatemala during three separate trips throughout medical school and residency. On my days off you will usually find me spending time with my husband Mark and our two young sons- taking advantage of our beautiful surroundings by skiing, hiking, biking and running (or lately, simply playing in the dirt). It is a privilege to work with such a wonderful team of providers and staff within the amazing community of Carbondale and the Roaring Fork Valley.

    Elizabeth F. Spidell, DO

  • Lauren F. Sontag, MD
    I grew up in Flagstaff, Arizona where my mom was a nurse for one of the beloved local family doctors. I attended medical school at the Mayo Clinic in Minnesota and still strive to uphold their motto, “The needs of the patient come first.” Prior to joining RFFP in 2014, I completed family medicine residency at St. Mary’s in Grand Junction. I also have a master’s in public health with a special focus on geriatrics and gerontology. It is my privilege to work in primary care: developing relationships with patients, participating in happy moments as well as challenging or sad ones, and being the provider whose job it is to care for the whole person. Though we all practice a broad scope of family medicine, I particularly enjoy caring for babies and children, young women and older adults. During free time, you’ll find our family walking our dog around Carbondale, at children’s events or enjoying the ski slopes.

    Lauren F. Sontag, MD

  • Andrew Henrichs, PA-C, ATC
    I joined Roaring Fork Family Practice in 2014. I attended the Physician Assistant (PA) program at the University of Colorado where we were trained with a focus on pediatrics in addition to the standard primary care focus of most PA programs. Prior to becoming a Physician Assistant, I worked as a Certified Athletic Trainer for eight years tending to injuries of student athletes. Five of those years were at Roaring Fork High School and Valley View Hospital Rehab Services.

    medical team

    roaring fork family practice primary care colorado carbondal basalt willits

    Carbondale| 978 Euclid Avenue | Carbondale, CO 81623 | 970.963.3350

    Basalt | 350 Market Street (Willits Town Center) | Basalt, CO 81621 | 970.384.7115