About OnePeak Medical


OnePeak Medical

Primary Care & Healthy Aging Services located in Redmond, OR, Medford, OR, Eugene, OR, Klamath Falls, OR, Roseburg, OR & Grants Pass, OR

OnePeak believes in providing our patients a unique wellness experience that redefines primary care through innovative, integrated health practices and services geared towards optimal health and well-being. Our healthcare providers understand that this approach to medicine leads to faster results, better outcomes, and ultimately saves our patients time and money. OnePeak Medical strives to pave the way for a healthcare system that accepts and values all evidence-informed practices and identifies the relationship between health, mind, body, & spirit.


Our Founder/Owner

  • Peak Founder & Owner

    Nisha Jackson, Ph.D. MS NP HHP

    Nisha Jackson is a nationally recognized hormone expert and functional medicine specialist. Nisha is the founder of OnePeak Medical Clinics located in Oregon and Texas, specializing in functional medicine, hormone balance, age management, and disease prevention. For 30 years, Nisha has sub-specialized in hormone balancing for men and women, utilizing in-depth testing and balancing treatments for the adrenals, thyroid, brain chemistry, gut, and sex hormones. Her approach to medicine successfully reverses chronic problems such as fatigue, brain fog, weight gain, depression, insomnia, loss of focus, stamina, and sex drive in men and women.

    Nisha is a renowned lecturer, motivational speaker, radio host, columnist, and author. She is the founder of Balance Docs Inc., a nutritional supplement company, BrandX, a sports wellness-focused nutritional company, and OnePeak Laboratories, a full-service laboratory for in-depth specialized testing and research.

    Nisha is the author of the best-seller, “Brilliant Burnout” How Successful, Driven Women Can Stay in the Game by Rewiring Their Bodies, Brains, and Hormones, “Hormone Survival Guide for Perimenopause” and “Surviving the Teenage Hormone Takeover.”

    Nisha moved to Dallas, Texas, in 2018 to be closer to her two daughters, Jordan and McKenzie. Jordan Blackwell, RN, MBA is the COO of Peak Management Group, and McKenzie Jackson, RN, BSN, is a certified Nurse Injector and trainer. Nisha continues to travel to Oregon to see her current patients and manage the medical operations.



Words from our patients

  • Google

    "Peak Medical Clinic has changed my life!From Bio-identical hormone pellets,IV therapy and vitamin shots to staff that are friendly and doctors that listen to your needs"

    Darlene P.
  • Google

    "The whole Peak Medical staff, from the office staff, nurses, doctors, to lab techs are absolutely wonderful! i have never waited more than 10 minutes for my appointment"

    Jennifer R.
  • Google

    "I’m so impressed with the staff and the medical procedures done at Peak Medical. My hot flashes are gone thanks to harmone therapy. "

    Lynne S.
  • Google

    "I am extremely pleased with every aspect of Peak Medical. From when you first walk in you feel comfortable and the Staff is very professional"

    Rick T.
  • Google

    "I have had the best experience with Peak Medical Clinic and their staff. They really take care of their patients!"

    Megan S.