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Meet the Team!


Natalie Penn, MD

My path to pediatrics was firmly rooted in my strong belief in the power and importance of preventive, holistic and integrative care, which are inherent to its practice. I have always been drawn to the therapeutic nature of the patient-provider relationship, and I am incredibly honored to be a part of a practice that holds the same values. 

I was born and raised in Topeka, Kansas. I am grateful to have a wonderful family, who has always been supportive of my goals and passions, even when they are unconventional (for example, becoming a vegetarian at the ripe age of seven). I stayed in my home state to attend the University of Kansas, where I earned B.A.s in Biology and Spanish, as well as my M.D. My experiences studying and living in Spain and Ecuador not only allowed my to hone my Spanish language skills, but gave me insight into different cultures, as well as traditional healing practices. In medical school, I completed a rotation at the Arizona Center for Integrative Medicine, which further piqued my interest in learning how to safely and effectively use traditional, complementary and alternative medicine together to provide the best care for patients. I was so in awe of the potential for energy to heal, I became certified in Reiki, levels 1 and 2. I ventured back to the desert, where I completed my residency at Phoenix Children’s Hospital in Arizona. 

I believe that open communication, respect and compassion are integral to forming healthy relationships with patients and families.  The best care addresses the health and well-being of the mind, body and spirit. I am passionate about leading and advocating for the benefits a plant-based lifestyle and using food as medicine. I love to stay active and enjoy practicing yoga, lifting weights, hiking, meditation, and getting outside whenever possible!

I am thrilled to embark on this new journey working with and learning from the families and team at H.I.P.!


Linda Couillard, DO

I am a proud and humble Mom, a grateful daughter, a sister to many and a Pediatrician. I feel blessed to call  Colorado my home for almost 25 years.

During my journey to become a Pediatrician, I found myself identifying closely with the distinctive philosophy of osteopathic medicine. At the time I was in school, Doctors of Osteopathy, D.O.’s, offered a unique approach to caring for patients. D.O.’s were focused on teaching patients and families how to prevent illness and injury by maintaining a healthy lifestyle. They were taught how to help the body heal itself. DO’s believed that all parts of the body, including the mind, worked together and influenced one another. It is this philosophy that drew me to become a Pediatric D.O. While I do profoundly embrace this holistic approach I do rely on evidenced based medicine in guiding and advising parents in health care decisions.

After obtaining a B.S. in Microbiology and a B.A. in Psychology at the University of South Florida, I earned my medical degree from Nova Southeastern University College of Osteopathic Medicine. I then completed my internship and residency at All Children’s Hospital in Florida. After completing my pediatric training in Florida, I followed my dream to live, work and play in Colorado. For more than 20 years I have had the privilege of working with children and families as a Pediatrician in the greater Denver area. I am board certified by the American Board of Pediatrics, am a fellow of the American Academy of Pediatrics, and a member of the Colorado Medical Society. I am also on the associate teaching staff of the University of Colorado School of Medicine and have enjoyed mentoring future physicians.

I enjoy the full range of pediatric medicine: babies, children and adolescents, preventative care, and acute and chronic illness management. I strive to partner with parents in providing comprehensive health care for their children. With my roots in osteopathic medicine I use a holistic approach in all aspects of caring for children and their families. I collaborate with pediatric specialists and other health care professionals, and utilize community resources in providing comprehensive, compassionate care for my patients.

Abbie Foust, MDAbbie Foust, MD

Becoming a pediatrician is a dream come true for me, and I'm thankful to have found a clinic that emphasizes holistic, integrative care. As someone who loves yoga, believes strongly in nutrition, and practices meditation and mindfulness, I'm thrilled to have found a clinic that offers such a wide variety of therapies to its patients. 

A little bit about me...I'm a Colorado native, born and raised in Denver. As a kid, I was involved in almost every activity under the sun (figure skating, piano, theater, soccer, softball, synchronized swimming, skiing, dancing....the list goes on...I have very patient parents). I love being active, and from an early age, recognized the importance of physical activity in overall health and wellness. I worked as a camp counselor for several years, and chose to go to medical school because of the joy I found in helping children thrive. I attended Denver East High School, Vanderbilt University, University of Colorado Medical School, and completed my pediatric residency at Children's Hospital Colorado. My husband, Andy, and I were married in 2013 and together enjoy exploring the mountains and traveling. 

I am inspired by the art of medicine and place great value on the connection we build as provider and patient. My style is warm, nurturing, playful, humorous, honest and open. The best part of my job is getting to know my patients and their families, supporting and empowering them to create wellness in their lives. 

I've had the privilege of working in medical settings around the world, including two years in Nicaragua and Ecuador. I am fluent in Spanish, and consider my time abroad incredibly influential. Having witnessed advanced illness, I have profound gratitude and appreciation for conventional medicine and its ability to treat. Additionally, I had the honor of learning from traditional healers and medicine men. Centuries-old healing arts brought relief to the mind, body, and spirit. I recognize that wellness is not just the absence of disease and place great importance on prevention. As a pediatrician, I aim to combine modalities and offer a holistic approach that blends complementary and alternative medicine therapies with conventional care in a safe and effective manner. I am currently enrolled in the Integrative Medicine Fellowship at the Arizona Center for Integrative Medicine, which I will complete in 2018. I am grateful for the opportunity to incorporate these skills into my pediatric practice and look forward to meeting you and your family! 

Stacey Pfannenstiel, PA-C

Stacey Pfannenstiel, PA-C

My journey began as a Physical Therapist.  I specialized in Spinal Cord Injury and had the good fortune to be part of the Craig Hospital family.  I learned many valuable lessons about the human spirit, perseverance, and human connection on the soul level.  After 13 years as a Physical Therapist, my life took a new direction that led me to the Physician Assistant program at UCHSC, where I fell in love with the myriad of children I had the pleasure to care for through my clinical years.

As a Pediatric PA, I am blessed to have the opportunity to connect with parents and their children from infancy into young adulthood.  There are many ways to parent and one of my jobs is to be an active listener and help guide you through this amazing thing called parenting in a style that is unique and preferable to your family.  I believe the best health care involves many facets and that an integrative practice has the benefit of traditional medicine intertwined with a more natural approach that allows our bodies and minds to assist in the healing process.

I have been practicing as a Pediatric PA in the Denver area since 2007 at University of Colorado birth center and in private practice.  I am blessed to have two children , Fin and Seri, and a loving husband, Dan, who are my greatest teachers.  They have taught me the true meaning of partnership, laughter, love, and gratitude.  I am excited to be a part of the Highlands Integrative Pediatric family and I am honored to care for you children!

Bryan Kono, M.D.

Bryan Kono, M.D.

I have gratitude for many things.  So many of those things can be traced back to the idea of family.  Growing up in California, one of four children in a loving family, provides the foundation.   The family that my wife,Tara, and I have been blessed to watch evolve as our daughters continue to grow, provides the daily reminders of what we have to be thankful for.  And as I watch the H.I.P family of colleagues and patients take shape and grow, I have a vibrant pediatric practice family to provide me with a new sense of gratitude.  Our daughters came to us through the foster to adopt program.  They have made me a far more effective pediatrician for all types of familes. 

I am interested in the power of connection between health care providers and their patients.  I believe that true connection is the best way to optimize what a physician can offer their patients.  My training began at the University of Chicago where I attended medical school and began to learn more about integrating conventional and natural approaches to health.  My pediatric residency at Stanford's Lucile Packard Children's Hospital also helped to solidify my belief that the best health care takes advantage of many different systems of thinking about one's health; mind, body and spirit. 

I have been practicing pediatrics in Denver since 2007 and continued to learn from my patients and colleagues about how to hone that craft more.  I love the breadth of experience that pediatrics provides from the newborn period through young adulthood.  I believe that our mind can help us in many ways and have seen that through teaching patients self-hypnosis and biofeedback.  It is my feeling that western medicine has provided many incredible advances and that we can utilize all that it has to offer.  At the same time we can benefit from the reminder that our body has an amazing ability to heal itself and that there are many ways to access that healing. And, that the best path for many of us includes both conventional medicine and natural approaches.  This is why we have taken the path of an "integrative" practice.   

I remain rooted in my medical training and as an Assistant Clinical Professor at the University of Colorado School of Medicine, I continue to stay involved with teaching medical students and residents. 



Contact Us

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