13333 Bel Red Road

Bellevue Washington 98005

Phone: 800-775-4902 Ext. 658


Bellevue Washington Bioidentical Hormone Specialist – Kate Kass, N.D.

Kate Kass, N.D. specializes in treating endocrine and hormone issues, with hundreds of hours of advanced training in Bioidentical Hormone Replacement and thousands of patients successfully treated. She is a licensed primary care physician who received her earned her Doctor of Naturopathic Medicine from the National College of Natural Medicine in Portland, Oregon and is an active member of numerous professional organizations that focus on anti-aging medicine. It is Kate Kass’ mission to provide patients exceptional individualized care. She and her staff are devoted to a patient-centered approach with an eye on prevention and not just the absence of disease, ultimately achieving optimal wellness. What makes Kate Kass effective is her advanced training and her functional medicine approach to her patients’ issues that addresses the underlying causes of disease, focusing on the whole person, not just an isolated set of symptoms.

Services Offered by Kate Kass, N.D.

  • Anti-Aging Therapies
  • Bioidentical Hormone Replacement Therapy
  • Detox Therapy
  • IV Therapy
  • Medical Weight Loss
  • Nutrition Counseling
  • Sexual Heath and Wellness

Patient Testimonials

“Working with Dr. Kate Kass was an absolute pleasure! She is incredibly knowledgeable about hormone health and balancing your system for optimum wellness. She is quick to find solutions and takes great care with each of her clients. In addition to seeing her for myself, I have had both of my daughters treated by her for anxiety. One of them said “I had no idea that this is the way other people feel” after following Dr. Kass’ protocol. I am beyond grateful for the superior care and compassion she has offered to each of us.”

“I recently started working with Dr. Kass. I’ve worked with many other naturopaths and have no complaints. But Dr. Kass specializes in working with women (and men), especially with all the changes our bodies experience as we age. I cannot say enough good things. Dr. Kass is professional, sensitive, easy to talk to and has a wealth of knowledge and ways in which she can help with different issues. I recommend her highly.”

“Dr. Kass has been my doctor for the last two years. She discovered I had very low testosterone, which 4 physicians before never thought to measure. I’d recently suffered from mild depression/anxiety and was shewas the only doctor who offered me a lab to assess neurotransmitters ( brain chemistry). Dr. Kass is incredibly thorough and my wellbeing is top of mind for her. I was initially hesitant to discuss erectile function issues, I thought ED was just a reality of getting older. Dr. Kass made it unbelievably comfortable for me to discuss. My libido is back, ED is essentially gone, I feel like a new man.”