Ruchir P. Patel, M.D., FACP
Medical Director And Founder

Dr. Ruchir P. Patel graduated from medical school at the Royal College of Surgeons in Ireland in 2007. He subsequently completed his residency in Internal Medicine at Henry Ford Hospital in Detroit, MI in 2010. It was during his residency, as a result of suffering from insomnia for three years, that he decided to pursue a career in sleep medicine. He entered into formal fellowship training in Sleep Disorders Medicine at Rush University Medical Center in Chicago, IL in 2010 and Pediatric Sleep Medicine at Children's Hospital associated with Northwestern University in Chicago, IL and graduated in 2011. During his fellowship, Dr. Patel has received extensive training in the diagnosis and treatment of over 80 sleep disorders in both adults and children in a multidisciplinary department composed of pulmonologists, neurologists, and clinical psychologists.

Dr. Anupama Ramalingam MD
Sleep Medicine specialist

Dr. Anupama Ramalingam MD is a Sleep Medicine specialist with additional expertise in Adult Psychiatry. She completed her residency in psychiatry and fellowship in sleep medicine at University of Missouri-Columbia. She is board certified in both sleep medicine and psychiatry. She specializes in the diagnosis and treatment of all sleep disorders, including obstructive sleep apnea (OSA), narcolepsy, restless legs syndrome (RLS), insomnia, circadian rhythm disorders and parasomnias with emphasis on treatment of sleep disorders as a means for disease prevention.

Her psychiatry training makes her keenly aware of the vital interplay between sleep health and mental health. She is always cognizant about how insomnia and some psychiatric disorders may be contributing to each other. Dr. Ramalingam is uniquely positioned to understand and manage patients with insomnia and treat or appropriately refer any co-morbid psychiatric disorders (depression, anxiety etc) that may be contributing to the insomnia. She also has special interest in evaluating pediatric patients with different sleep disorders. She emphasizes the importance of behavioral sleep medicine and its role in the treatment of sleep disorders.

My goal at ISIA is to provide patients with the latest diagnostic and therapeutic tools available in sleep medicine and to help patients understand the basis of their treatments. By carefully listening to my patients, I employ specific diagnostic testing when needed to tailor a therapeutic plan for each individual."

Dr. Stacey Gunn

Dr. Stacey Gunn grew up in Cleveland, Ohio and received her undergraduate degree from The Ohio State University. She went on to medical school at New York University, graduating in 2010. She then completed her residency in Internal Medicine, training at NYU Langone Medical Center, Bellevue Hospital, and the Manhattan VA. After spending two years practicing as an internist, she pursued a fellowship in Sleep Medicine at Beth Israel Deaconess Medical Center in Boston, becoming specialized in the treatment of the broad scope of sleep disorders in both adults and children. During her fellowship, she trained under recognized leaders and cutting-edge researchers in the Sleep Medicine field at Beth Israel Deaconess Medical Center, Massachusetts General Hospital, and Boston Children’s Hospital. After completing her fellowship in 2016, she stayed on as faculty at Beth Israel Deaconess and served as an Instructor in Medicine at Harvard Medical School. She is dual-board certified in Internal Medicine and Sleep Medicine, and is a member of the American Academy of Sleep Medicine.

Dr. Gunn has particular clinical interests in the diagnosis and management of circadian rhythm sleep disorders, as well as in the treatment of central and complex sleep disordered breathing. She favors non-pharmacologic methods of treating insomnia with the goal of helping patients to reduce or eliminate their reliance on sedative medications. She is also well-practiced in the treatment of obstructive sleep apnea, narcolepsy, idiopathic hypersomnia, restless leg syndrome, and parasomnia.

Dr. Gunn recognizes that each patient has a unique set of values and life circumstances influencing their treatment goals. She believes in listening closely to patients and gaining a full understanding of their lifestyle, priorities, and other medical history. She integrates this information into an individualized treatment plan for managing their sleep disorder in a realistic and practical manner.

Dr. Kelly Krietsch, PhD Clinical Health

Dr. Kelly Krietsch, PhD will be working full time alongside Dr. Ruchir P Patel, Medical Director, and our other sleep clinicians, in establishing our behavioral sleep medicine program for dedicated Cognitive Behavioral Therapy for Insomnia (CBT-I).

Dr. Kelly Krietsch is a clinical-health psychologist whose experience includes: Clinical Psychologist, Mountain Heart Health Services, Associate Professor, Department of Psychology at Northern Arizona University, and Coordinator of the Graduate Program in Applied Health Psychology. Dr. Krietsch has extensive experience in behavioral sleep medicine, along with many other behavioral medicine specialty areas such as primary care psychology, chronic pain and illness, behavioral cardiology, behavioral neurology, and pre-surgical evaluations for patients being considered for neuromodulation and orthopedic surgery.

He not only works extensively with insomnia but with a broad range of other sleep disorders, especially those that are embedded in complex medical conditions. He performs psychological assessments and coordinates care with sleep specialists, primary care physicians, and other specialty providers to develop effective treatment planning. Dr. Krietsch has 15+ years of experience with CBT-I in managing insomnia and related sleep disorders in a wide variety of outpatient settings.

He is especially interested in the impact of sleep disorders on other health conditions such as depression, chronic pain, diabetes, obesity and various forms of cognitive dysfunction. Dr. Krietsch has successfully developed and implemented protocols for improving CPAP compliance and addressing other coping and adaptation issues associated with breathing  related sleep disorders.

Caitlin Haley, PA-C
Physician Assistant, Sleep Medicine

Caitlin Haley PA-C is a physician assistant who works alongside Dr. Patel to provide ongoing care to our patients in sleep medicine. She sees patients with various sleep disorders including sleep apnea, insomnia and narcolepsy.

Caitlin earned her Bachelor of Science degree in Biology with honors from Truman State University in Kirksville, Missouri. She relocated to the valley for PA school, earning her Masters of Physician Assistant Studies degree in 2010 from A. T. Still University in Mesa, Arizona. She began her physician assistant career in Sleep Medicine in Corvallis, Oregon with a multidisciplinary group of Sleep physicians and advanced practice providers. She relocated to the valley in 2012, and practiced in urgent care and urology before returning to sleep medicine.

She is a member of the American Academy of Physician Assistants, as well as the American Academy of Sleep Medicine. Outside of practicing sleep medicine, she enjoys cooking, hiking, kayaking and traveling to National Parks with her husband Neal, and stays busy with her very energetic dog Sibley.

Message from Caitlin: “Sleep medicine is such an important specialty because it’s a combination of treating a disease and practicing preventative medicine. We all sleep, and our bodies require good sleep to perform all of the other incredible processes that keep up healthy and moving. I love being able to help improve such a vital part of a patient’s health, especially when we are able to make such a difference without using medications.”

Message from Dr. Patel: "We have been very fortunate to have Caitlin join our practice as it is very difficult to find a PA that has been specifically trained in sleep medicine and fully understands the various sleep disorders that are diagnosed and treated in our specialty.  She has been instrumental in allowing me to ensure that all of our patients are being taken care of at appropriate intervals and to prevent unnecessary wait times.  Furthermore, we have vowed to ensure that we are always "co-managing" each patient to ensure that every patient has the best level of care regardless of which provider he or she sees.  Caitlin has demonstrated an excellent understanding of sleep medicine and practices sleep medicine like a true sleep specialist.  We are very pleased to have her as part of our team."



8330 E Hartford Drive, Suite 100

Scottsdale, AZ




1530 E Williams Field Road, Suite 204

Gilbert, AZ