St. Mary's Medical Center Family Medicine Residency


facultydigioiaSabrina Mitchell, DO, CAQ, Program Director

Dr. Sabrina Mitchell was raised, skiing, in Mammoth Lakes, CA. She received her BS in Physiology from UCSD & graduated from University of New England, College of Osteopathic Medicine; residency was at MSU-Sparrow in Lansing, MI. She then headed for sunnier climates moving to Farmington, New Mexico where she worked in a community health center, opened a private practice & took on the job of Medical Director for Northwest New Mexico Hospice. Sabrina’s passions are hands on Osteopathic Manipulation, Palliative & End of Life care, & Non-Diet Weight Management. She is double boarded in Family Medicine and Hospice and Palliative Medicine. She has two daughters & enjoys riding her motorcycle, cooking, singing & teaching herself guitar. Her family is really enjoying all the great outdoor activities of the Grand Junction area.

facultydickersonKeith Dickerson, MD, MS- BME, Associate Program Director, Medical Section Chair

Keith Scott Dickerson, MD, MS-BME was born and raised in southeast Pennsylvania, then attended Drexel University in Philadelphia, earning a BS in Electrical Engineering in 1989. He worked for a year for GoreTex then returned to Drexel, earning a Master's in Biomedical Engineering in 1992 before walking away from his Calhoun scholarship to attend medical school at the Medical College of Pennsylvania, eventually graduating Cum Laude and AOA in 1997. After a 3 year residency in Family Medicine at the University of New Mexico he completed a 4 year Air Force commitment at Kirtland Air Force base from 2000-2004, where he was Medical Director and Element Leader for Family Medicine. He realized he wanted to be in a teaching program, live in Colorado, but not be on the Front Range, so he pursued a job at St. Mary's Family Medicine Residency, where he has worked as Faculty since 2004. His main areas of interest are Hospitalist Medicine, Adult Learner Theory, Quality/Safety and maintaining joy within a medical career by maintaining life balance. His main non-medical interests are outdoor recreating, gardening, making music and spending time with his wife and daughter. He is currently the Medical Section Chair for St. Mary's and Associate Program Director for the family medicine residency.

Karlynn Sievers, MD, Associate Program Director 

CMP0483Edit2Dr. Karlynn Sievers was born & raised in Kansas City. She majored in both English & Life Science at the University of Missouri then off to medical school at the University of Missouri at Columbia. She stayed in MO for her Family Medicine residency at Truman Medical Center. After completing her training Dr. Sievers enjoyed a busy private practice in the small town of Rolla, MO. (pop 10,000) Then she decided to explore the world. New Zealand was the choice of an amazing place to practice for a season. The next step in her career was to teach the full spectrum family medicine she has been practicing - so she moved to the mountain west. She was "teacher of the year" at the University of WY - Casper, before joining the faculty in Grand Junction. She is married, has two boys, a ferret. The majority of her time is spent with one of those five creatures, she also loves hiking, reading, and watching nerdy movies. Shall we discuss Star Trek vs Star Wars, & Harry Potter?

facultyCookTonya Cook, PharmD

Dr. Tonya Cook is our pharmacy faculty. She earned her decorate of pharmacy at the University of New Mexico and then completed a residency in Ambulatory Care at the Asheville VA in North Carolina. Dr. Cook’s areas of interest include collaborative care, teaching, mental health, and pain management. Outside of work she enjoys reading, hiking and traveling.

Amy Davis, MD, MPH, AAHIVM

facultydavisa Dr. Amy Davis has been the medical director of the HIV Collaborative Clinic at SMFM since 2000. Her passion inmedicine has been for special populations and the underserved. Her hometown is Queensbury, NY. She received her B.S. in biochemistry from Cornell University in Ithaca, NY then attended medical school at SUNY -Buffalo. She completed residency at Maine-Dartmouth FMR in August, Maine. She practiced 4 years with the Indian Health Service on the Hopi Reservation before joining the SMFM faculty. Her husband is an organic farmer. Together they have three children.

150x225RyanJackmanSMGJFamilyMedicineResidencyRyan Jackman, MD, Addiction Medicine

Dr. Ryan Jackman grew up in South Jordan, UT. Having completed his BA at Utah State University, his MD at The Medical College of Wisconsin, and residency in Grand Junction (finding a place that really felt like home) he moved again to complete a fellowship in Addiction Medicine at the University of Colorado in Denver. His research was funded by the National Institute on Drug Abuse & involved translational research in telehealth and resident education. Ryan elected to pursue family medicine because of his love for the breadth of medicine (also known as his inability to settle for just one specialty). Specific clinical interests include addiction medicine, obstetrics, and resident education. He was thrilled have the opportunity to return to St. Mary's and in the "Grand Junction way" build an integrated addiction medicine clinic within the family medicine residency. Outside of medicine he enjoys adventuring with his girls (wife and 3 children) whether that be hiking, camping, and playing princesses.

150x225KatieJoySMGJFamilyMedicineResidencyKatie Joy, DO, Pediatrics

She grew up in Alaska & Colorado & attended The University of Colorado, Boulder for her undergraduate degree in Kinesiology. Medical School was at Des Moines University School of Osteopathic Medicine & her Pediatric residency was at the University of New Mexico in Albuquerque. She joined Western Colorado Pediatric Associates in Grand Junction 4 years ago after working in Portland & Glenwood Springs & jumped at the chance to consistently work with residents. When she's not in the office you can find her enjoying the outdoors - everything Western Colorado can offer, biking, hiking, skiing, etc. - usually with her husband.


Andrew Gerdes, MD 

Image1 Dr. Drew Gerdes is originally from Central Texas where he received his BA from the University of Texas at Austin and his MD from The University of Texas Medical School at Houston. He decided to look West for residency training and came to St. Mary's for residency because of the full-spectrum training, the incredible people, and the Rocky Mountains. He is thrilled to now be a part of the St. Mary's faculty where he enjoys practicing full-spectrum family medicine alongside our residents. Current areas of interest include pediatrics, inpatient medicine, and resident/physician wellness. When away from the residency, he can be found running, hiking, or skiing with his wife Shannon, planning his next international adventure, or camping in beautiful Western Colorado.


Laudenschlager Wade G PhotoWade Laudenschlager, MD, RPH

Dr. Wade Laudenschlager grew up right here in good old Grand Junction. Wade first explored pharmacy earning his BS at The University of Colorado in Boulder. He has practiced as a pharmacist before & after med school giving him an interesting perspective in prescribing. Wade then earned his MD at The University of Colorado going to Washington D.C for Internal Medicine residency at George Washington University. Wade has been a stalwart faculty now for 10 years with several teacher of the year awards. He loves spending time with his family & can be found in his pick-up truck seeking adventure throughout Colorado.


Justin McCarthy, MD

Justin McCarthy, MD Dr. Justin McCarthy (aka the Benjamin Button of faculty) was raised in Golden, CO. His first teenage act of defiance was leaving CO to settle down in Omaha’s amber waves in the study of Medical Anthropology. After earning his BA and MD from Creighton University, Colorado’s prodigal son jumped at the opportunity to return to the dramatic canyon scapes of Western Colorado for residency. While training at St. Mary’s he discovered his joy of teaching and mentoring. He has done additional training in HIV and Hepatitis C and looks forward to continued work in these areas as faculty. Justin is married to a small woman with a big heart. His wife, Rachel, works as a LCSW/therapist in town. Together, they’ve raised the valley’s biggest criminals (their two Australian Shepherd dogs), and enjoy all trail and snow activities afforded in Western Colorado.


Stephanie Voyles, MD

Stephanie Voyles, MD

Dr. Voyles attended medical school at the University of California at Davis, and completed her Family Medicine Residency in Merced, California. She has happily moved to the Western Slope from Central California to continue her primary care career. She is especially excited to be working with the residents! In her spare time, Dr. Voyles has begun to enjoy yoga, and is looking forward to hiking with her family in the area.


Michael Olson, PhD, LMFT

Michael Olson, PhD, LMFT 

Dr. Mike Olson comes to us from the University of Texas where he directed their behavioral medicine program for 11 years. Prior to that he worked at the University of Nebraska Medical Center in Omaha, NE, co-directing the behavioral medicine program and developing a medical family therapy Ph.D. program. He attended Brigham Young University for undergrad and his Masters degree in MFT, then Kansas State University for his Ph.D. and a post-doc fellowship in behavioral medicine from University of Texas. He is married - they have five children. Outside interests include music (piano), art, hiking, and Alpine skiing with the family.

Mike Reeder, DO, CAQMike Reeder, DO, CAQ

Dr. Mike Reeder attended Ohio University med school. He completed an ER Residency at Akron General & his Fellowship at Albany Medical Center in NY. He moved here to work with the Residency, Colorado Mesa University & private practice. He's interested in all aspects of non- surgical orthopedics/sports medicine, exercise physiology, & biomechanics. He especially enjoys bicycling, cross-country skiing, & time with his family.

Randall Reitz, PhDRandall Reitz, PhD

Dr. Randall Reitz is our Director of Behavioral Sciences. He received a PhD in Marriage and Family Therapy from Brigham Young University. He directs our Medical Family Therapy Fellowship and the integrated mental health team. His scholarly interests are professional identity development, trans-disciplinary training, and group medical appointments that he leads with our residents. Dr. Reitz speaks four languages (Spanish, French, Portuguese and English). Outside the clinic he is married, has three children, loves trail running, biking, and baking.

Lyrad Riley, MDLyrad Riley, MD

Dr Lyrad Riley grew up in a small town in Northern California. He attended Brigham Young University, then St Louis University Medical School. Residency was back in California at Travis AFB then fellowship in surgical obstetrics in Austin, TX. Dr Riley served as a Family Physician and Flight Surgeon in the Air Force for 20 years before joining St Mary's Family Medicine Residency. He has extensive International experience with over seven years throughout the world including: Great Britain, Germany, Slovenia, Haiti, Belize, Peru, Guam & 7 Nations in Africa. He spent 6 years as residency faculty in Florida prior to moving to Grand Junction-- garnering several teacher of the year awards. His main areas of interest include travel medicine and maternity care.

Paul Simmons, MD, FAAFPPaul Simmons, MD, FAAFP

Dr. Paul Simmons is a Colorado native. After graduating with a degree in history from Baylor University, he attended the University of Colorado School of Medicine. His family medicine residency was completed in Greeley, Colorado, where he was elected chief resident. Dr. Simmons practiced family medicine including obstetrics, sleep medicine and endoscopy in rural areas of western Wisconsin and eastern Colorado, and was awarded the 2009 Rural Health Excellence Award by the Colorado Rural Health Center. Since moving to Grand Junction, he has not only taught family medicine residents, but also undergraduate biology students and graduate nursing students at Colorado Mesa University. His medical interests include physical examination, office procedures and evidence-based medicine. Dr. Simmons has three neurotic dogs and enjoy traveling, hiking and good food.

UptonChris Upton, MD

Dr. Christopher Upton was born and raised in central Pennsylvania though left after college to pursue climbing, skiing, and other endeavors in Colorado. He returned to medical school at the University of Colorado Denver and did his residency at St Joseph’s Hospital where he stayed on an extra year to complete an OB fellowship. He, and his wife Sara, then spent 3 years south of Asheville, NC, where Sara trained in Hospice and Palliative Care. Dr. Upton worked for an FQHC clinic and residency program in Hendersonville, NC during this time. But, Colorado has always felt like home and they have returned to the Western slope. Clinically, his interests are in Obstetrics (Including operative OB) and procedural training. Outside of work he enjoys baking, brewing, gardening, skiing, climbing, backpacking, traveling to remote corners of the globe, and spending time with Sara and their 3 furry children (Dogs).