Dedicated, compassionate, and prepared.
It is quick and easy to schedule your appointment online, just click the “SCHEDULE NOW” button in the menu above, or select your preferred medical provider by using the buttons below.
You can also reach us by phone at (303) 730-2167.
Dr. Ashleigh Sartor is passionate about building lasting relationships with her patients and helping them achieve their best health through a personalized, whole-person approach. As a board-certified physician in both Primary Care and Functional Medicine, she focuses on uncovering the root causes of health concerns and working alongside her patients to create sustainable, effective treatment plans.
Dr. Sartor earned her medical degree from Wayne State University in Detroit after completing undergraduate degrees in Chemistry and Biology at Hope College in Michigan. She then moved to Denver for her residency training at Swedish Medical Center Family Medicine Residency, where she fell in love with Colorado’s vibrant medical community and active lifestyle.
With a broad scope of expertise—including women’s health, preventive care, and chronic disease management—Dr. Sartor is committed to treating the whole person, not just symptoms. She also serves as the director of the Elite Medical Weight Loss program at Altitude, helping patients reach their health goals through evidence-based strategies in nutrition, lifestyle, and medical support.
A firm believer in the power of healthy living, Dr. Sartor enjoys sharing her knowledge of functional medicine, nutrition, and cooking with her patients to help them make lasting, positive changes.
Dr. Rebecca Nickell believes great healthcare is about more than just treating symptoms—it’s about understanding you as a whole person. As an Osteopathic Physician, she takes a comprehensive, patient-centered approach to health and wellness, helping individuals and families thrive at every stage of life.
After earning her medical degree from Oklahoma State University College of Osteopathic Medicine in 2002, Dr. Nickell fell in love with Colorado while completing her residency at Southern Colorado Family Medicine in Pueblo. Her expertise spans general family medicine, women’s health, osteopathic manipulation, mental health, and weight management. She loves caring for entire families, from young children to grandparents, and values the relationships she builds with her patients over time.
Dr. Nickell’s passion for medicine was sparked by stories of her grandfather, a small-town family physician who cared for his entire community like they were family. That same dedication drives her today, ensuring each patient feels heard, valued, and supported in their health journey.
Outside of medicine, Dr. Nickell enjoys spending time with her three daughters and extended family. She’s an avid reader, a lover of live theater, and a creative spirit who enjoys sewing and designing costumes for the whole family
With over 20 years of experience as a board-certified family physician, Dr. Tana Smith is dedicated to providing personalized, patient-centered care. A proud Colorado native, she has spent decades serving local communities, helping individuals and families stay healthy through every stage of life.
Dr. Smith completed her undergraduate studies at the University of Denver before earning her medical degree from the University of Colorado School of Medicine. She then trained at the St. Anthony Family Medicine Residency Program in Denver, where she honed her expertise in comprehensive family medicine.
Believing that the best healthcare happens through partnership, Dr. Smith takes the time to truly listen to her patients, ensuring that treatment plans are developed collaboratively. She values shared decision-making, empowering her patients with the knowledge and support they need to take charge of their health.
Dr. Smith has called Littleton home for over 20 years, where she and her husband—married for over 40 years—have raised their family. Now proud grandparents, she cherishes time spent with her loved ones and enjoys the Colorado outdoors. Whether she’s swimming, hiking, biking, or skiing, she embraces an active lifestyle. She also loves to unwind with a good book, always eager to learn and grow.
A Colorado native, Dr. Mack has always had a deep connection to the community she serves. She earned her undergraduate degree in biology with a minor in chemistry from the University of Northern Colorado before completing a master’s in Biomedical Sciences at Colorado State University. She then pursued her medical degree at Rocky Vista University and went on to train at Durant Family Medicine in Oklahoma, where she gained valuable experience caring for rural and underserved communities.
Dr. Mack is passionate about building long-term relationships with her patients and their families. She takes the time to truly listen, educate, and explore the best care options together—because your health decisions should always feel like a team effort.
When she’s not seeing patients, Dr. Mack loves spending time with her husband and family, exploring the Colorado mountains through hiking, camping, and off-roading. She also enjoys unwinding in the kitchen, experimenting with new cooking and baking techniques to share with loved ones.
Clay is a Colorado native that received a bachelors of Science degree in Human Biology from University of Colorado at Colorado springs. He went on to receive at Master’s Degree in Public Health from Westminster College in Salt Lake City leading to a direct commission onto active duty as a Public Health Officer in the Air Force. After 4 years and multiple decorations he transitioned to the National Guard where he continues his service as he completed a Master’s in Physician Assistant Studies from the University of South Dakota. He has worked in the Emergency Department and is excited to move to Primary Care. Clay has worked in all his previous careers to prevent disease in communities and is ecstatic about the opportunity to continue that mission in Primary Care for his patients.
Clay spends his time outside of the clinic with his wife Jenny, their son Parker and daughter Adalyn enjoying life in Colorado. He is an avid cyclist, runner, hiker, hunter, fly-fisherman and skier.
Alyssa Coleman is passionate about providing primary care and preventative healthcare to her patients. She believes the best way to tackle healthcare is to prevent problems from happening at the start. She likes to build relationships with her patients by working with them as a team to address their concerns.
Alyssa completed the Family Nurse Practitioner program from the University of Colorado Anschutz. She also has a Master of Public Health from Boston University.
Being a Colorado native, Alyssa loves getting up to the mountains. She enjoys snowboarding and hiking. In the last year she has taken up kickboxing. She has two kids, both boys, ages 1 and 3 years old. She also has two dogs: a 2-year-old lab and a 14-year-old cattle dog. They all keep her busy!
David Battiste, PA-C has been in practice since late 2020 and is an NCCPA certified Physician Associate. He is affiliated with the American Academy of Physician Associates, the Physician Assistant Education Association, and the LBGT PA Caucus. Specializing in Family Medicine, David holds a Bachelor of Applied Science in Organizational Leadership and an Associate of Applied Science in Paramedicine, as well as a Masters of Clinical Health Services. He believes that teaching and expertise are not mutually exclusive, with passion being the overlap for a great educator.
David also believes that healthcare is a fundamental human right and aims to provide significant medical and mental wellness to his patients while educating and motivating them, as well as his peers and family, to advocate for themselves to achieve their ideal physical and mental wellness. In his personal time, David enjoys spending time with his wife and two daughters, and is a health enthusiast and avid outdoors person who enjoys reading, music, camping, and backpacking.
Taylor Jamieson is an accomplished Practice Administrator with a robust background in healthcare. He holds a Master’s degree in Business Administration from Tennessee Technological University. With a total of 14 years of experience, Taylor spent 7 years working as a Medical Assistant, specializing in cardiology and urgent care, before transitioning into management roles. For the past 7 years, he has been dedicated to leading teams in primary care, bringing a wealth of expertise and a strong commitment to patient care.
Taylor lives with his wife in Lakewood, where they enjoy the serene environment. In his free time, Taylor is passionate about running and immersing himself in books, finding balance between his professional and personal life.
Experienced Administrative Professional with a demonstrated history of success in a variety of provider specialties in the Hospital & Healthcare industry. Skilled in Healthcare Information Technology (HIT), Revenue Cycle, Electronic Medical Record (EMR), Process Improvement, Credentialing, Practice Development, Expansion and Consolidation. Strong history in Practice Optimization, Cost Management and Patient Satisfaction. Susan graduated with honors from Colorado State University with a Masters in Healthcare Administration and from Southern New Hampshire University with a Bachelor of Science Healthcare Administration.
Shara Hansen is a Board Certified Nurse Practitioner who earned her undergraduate degree in Nursing from Bradley University in Peoria, Illinois and her master’s degree as a Family Nurse Practitioner from the University of Colorado. Shara has been practicing primary care medicine for over 20 years.
She has advanced training in Clinical Nutrition, Anti-aging Medicine, Bio-identical Hormone Therapy, Acupuncture, Medical Aesthetics, and in Executive Leadership. Shara serves as the Executive Vice-Chair of Altitude Family & Internal Medicine and is the Director of our nonprofit entity, the Altitude Health Foundation.
Shara values quality, patient-centric, holistic care for every patient. She is married to her childhood sweetheart and has 2 beautiful daughters. She enjoys spending time with her family and spending time outdoors hiking, biking, running, swimming, snowshoeing, and snowboarding.
Dr. Hansen earned his medical degree with honors at the University of Illinois College of Medicine and completed his residency training at St. Anthony Hospital in Denver. Dr. Hansen is the only triple board-certified Primary Care Physician, Clinical Lipidologist, and Nutrition Specialist in the United States. Dr. Hansen has been practicing in Denver for over 25 years and serves as the Executive Chair for Altitude Family & Internal Medicine, Professor of Medicine at the University of Colorado School of Medicine, and Board Trustee for Colorado Health Neighborhoods.
Dr. Hansen is a nationally-featured expert on heart disease, hypertension, cholesterol, diabetes, nutrition, and longevity. He has been featured on NBC’s TodayShow.com and MSNBC and has contributed to many books and publications including Breakthroughs in Natural Healing and Building Foundations for Change from the bestselling “Wake Up and Live the Life You Love” Series. Dr. Hansen’s latest highly anticipated book, Transcending Cholesterol is scheduled for release in the near future.
For his clinical work, Dr. Hansen is proud to be distinguished as a Patients’ Choice Award winner, an honor bestowed to the top 5% of physicians in the United States as voted by patients, for several years.
