Claire Diamant-Yefet, FNP-BC, MSN, RN, BSN

Claire Diamant-Yefet, owner and nurse practitioner at Health Now, went to college at the University of Colorado where she received a BA in psychology with the plan of pursuing her masters in counseling but then decided she wanted to be able to treat the whole body and went on to get her Bachelor's Degree in Nursing at Denver College of Nursing. She started her career as a nurse after moving to Florida for 2 years to be closer to the ocean which she loves! In Florida, she was a pediatric oncology nurse. Her love for kids took her into this realm of nursing. It was definitely a challenge but it was so fulfilling for her to be able to help children and their families as they were fighting for a cure. Claire then went on to become a travel RN and moved to New York to explore the big apple! While in NYC, Claire worked on the general pediatric unit at Weill Cornell Hospital with school aged children as well as babies. Her next contract took her to Memorial Sloan Kettering Cancer Center, back to her original stomping ground and where she loved to be. “Patients with cancer have a major obstacle and tremendously hard  life change put in front of them, they learn to truly appreciate life and you can personally feel that from their energy, its very sad and hard but truly a special field to have grown in. “I have stayed in touch with many of my patients to this day and I see them when I go back to visit with my husband and 18 month old daughter, my husband is from New York!” While working as a nurse for 5 years, Claire received her masters of science degree at Simmons College in Boston where she became a family nurse practitioner, again wanting to be able to treat ailments from head to toe. She returned to Colorado 2.5 years ago to be close to her family again as family is number one in her life, this includes her 6 year old, fluffy Pomeranian, Romeo. She started her career as an FNP at DTC Family Health and after 2 years, was given an amazing opportunity by her family , to fulfill her lifelong dream of owning her own practice as well as practicing as a NP in her own clinic and providing urgent care.


 Donald Michael Miller, NP-BC, MSN, BSN

Donald Michael “Mike" Miller, is a nurse practitioner that brings nearly 3 decades of service to others to his role as nurse practitioner. He has worked as a rehabilitation technician, student nurse and then BSN trained neonatal nurse and rehabilitation nurse before starting his quest to earn his Master of Nursing (MSN) degree from Beth El College of Nursing in Colorado Springs, Colorado. Since receiving his MSN in 2004, he has had rich experiences that shape his approach to the provision of health care, as well as his area of expertise. Mike pioneered a role as a hospital-based NP at Sky Ridge Medical Center, working as the Spine Practitioner for the renowned spine program. He was instrumental in that program’s early growth. After leaving Sky Ridge Medical center he worked in an orthopedics practice that enabled him to develop expertise in orthopedic issues and allowed him to learn, as well as use procedures and techniques for his primary care patients. He later joined a neurosurgery practice where he specialized in spine issues. To this day he cites spine care as his special area of expertise. He has since worked in urgent care and is experienced in acute care procedures. Due to his urgent care experience, Mike provided treatment modalities not usually provided in primary care offices. Over the past 7 years, Mike has provided primary care at University of Colorado-Colorado Springs’ HealthCircle Primary care, High Country Healthcare in Frisco, Colorado and more recently Internal Medicine at UCHealth.

Mike tries to take a strong holistic approach to his care for others. He is open to alternative forms of medicine as long as it is consistent with a high-level standard of care.

In his personal life, Mike has family that consists of his wife Julie and 3 daughters. Of his “home team” he has 3 other health care professionals in the family. Wife Julie is an audiologist, daughter Sarah is an anesthesiologist and daughter Emily works in a neurology practice.  His daughter Hannah owns a wedding and events planning business.

Mike is an avid outdoorsman and has a passion for skiing and cycling.

Mike advocates for his patients taking ownership of their care and encourages all questions and concerns. Patient success in healing, is directly related to a vested interest by the patient in being healthy.


 Matt Silvaggio, MSPT, CFMT, CSCS

You know that saying, “you are what you eat”?   In physical therapy it is, “you are how you move”.  I specialize in helping people understand why they are in pain, why their body is not moving with ease, and providing solutions for how they can return to what they love doing without pain.  My approach to patient care involves a balance of what people want but also what they need.  This commences with a proper and thorough evaluation of you as a whole including your goals, needs, complaints and past history.  Treatment entails tactful exercise selection to improve the movements and strengths necessary for you to heal and become a stronger you.  It will also entail manual therapy including soft tissue and joint manipulation, dry needling, Graston technique, and cupping to name a few.  The final ingredient to success is patient education.  Research shows that patients achieve their best outcomes when they are intricately engaged in their own healing process. 

I love fitness and the arts of movement.  A testament to this includes my certification to teach yoga as well as my certification as a strength and conditioning specialist.  I have been licensed as a physical therapist since 2003, graduating from Nazareth College of Rochester, NY.  I am passionate about helping people and I am very committed to doing so.  When I am not working, I am outdoors with my wife and son enjoying the Colorado lifestyle.


 Emily Sisa, FNP-C, MSN, RN, BSN

Emily Sisa is a nurse practitioner who recently graduated from the George Washington University with her Master of Science in Nursing. She is a third-generation nurse who grew up in Northern Virginia and received her Bachelor of Science in Nursing from the University of Virginia in 2011. Emily began her career in Bermuda working in the emergency room at the same hospital where her grandmother worked. She then moved to Washington, DC and worked at George Washington University Hospital. She also worked as a travel nurse in hospitals in New York City and Denver. Emily volunteered her nursing skills to work with Project HOPE in Nepal, India, and Haiti. She has helped patients of all ages in her ten years working as an emergency department nurse. She is dedicated to delivering safe, effective, and holistic patient care and has a passion for lifelong learning. Emily enjoys staying active and spends her free time exploring all that Colorado has to offer with her partner, Dan, and their Bernedoodle, Lucille.

Dana Isaacson Headshot_edited_edited.jpg

Dana Isaacson, FNP-BC, MSN, RN, BSN

Dana received her baccalaureate in nursing from The University of Maryland in 2003. Prior to obtaining her Masters Degree with a concentration as a Family Nurse Practitioner from Drexel University in 2013, Dana worked as a cardiac nurse and later in critical and intermediate care at the R. Adams Cowley Shock Trauma Center at The University of Maryland Medical Center. She transitioned to the Emergency Department both in Baltimore and later at The University of Pennsylvania Health System, where she obtained certification in emergency nursing.


Dana has worked as an Observation Unit Nurse Practitioner through the department of Emergency Medicine at The Hospital of The University of Pennsylvania. As a Nurse Practitioner, she has also worked in the Department of Family and Community Medicine at Drexel University which included providing primary and urgent services at Drexel’s Student Health Center. After relocating to Denver, she worked in an outpatient primary care office concentrating on preventive medicine, wellness, hypertension, metabolic and cardiac diseases, medical conditions of the skin, mental health, women’s health, and LGBTQ health.

Since 2018, Dana has been working in the Colorado House of Representatives conducting literature reviews to help support vital healthcare reform legislation. She has been instrumental in helping more Coloradans have access to high quality, affordable healthcare especially related to mental health services. She is currently on the Board of Directors for the Denver Chapter of PFLAG (Parents and Friends of Lesbians and Gays).

Dana strongly believes in a holistic approach to healthcare where her patients are active partners on their path to wellness. She views each patient encounter as an opportunity to educate and collaborate with her patients so that they feel empowered to live their healthiest life. When not at work, Dana enjoys spending time with her husband and two young children. She is an avid swimmer and is a member of the U.S. Masters swimming association. She also enjoys hiking, skiing, traveling, and cooking.