September 16, 2019


Shiva Barton~ Keri Layton ~ Liz Allen ~ Marcie Troisi
All our practitioners are available for speaking engagements.
We can tailor our talks to meet your needs.

Shiva Barton

Shiva Barton, ND

Dr Shiva Barton is a naturopathic doctor and acupuncturist. He treats adults and children who have acute, chronic or difficult/unusual conditions. His goal is to relieve your symptoms while working to remove the underlying cause of your illness.


His practice focuses on:

  • Difficult/Unusual Conditions
  • Autoimmune Diseases
  • Chronic Fatigue/Thyroid Disorders
  • Menstrual Disorders/Fertility/Pregnancy
  • Children’s Health/Optimal Prenatal Development
  • Mood/Behavior/Attention Disorders
  • Digestive Disorders
  • Cancer Prevention and Treatment Support
  • Sports Injuries and Pain Issues
  • Healthy Aging
  • Functional Medicine

Dr Barton has been practicing in the Boston Metro area since 1985. He was awarded the American Association of Naturopathic Medicine’s Physician of the Year Award in 2011.

Dr. Barton’s other interests include his family, dark chocolate, being out in nature, shooting hoops and playing loud music on the guitar.

To contact Dr. Barton, please call (781) 721-4585 or email him at

keri laytonKeri Layton, ND

Keri Layton, ND grew up in conventional Medical Doctor’s offices, enduring decades of tests and specialists, navigating undiagnosed autoimmune disease. It was the process of becoming a Naturopathic Doctor that clarified her health challenges and revealed her best tools for obtaining and maintaining vibrant health: diet, lifestyle, stress management and gentle therapies. She now deeply enjoys partnering with patients on their own journey to optimal health.

Dr. Layton received her undergraduate degree in Neuroscience and Behavior from Mount Holyoke College in 1999 and graduated from Bastyr University with her Naturopathic Doctorate in 2006. Throughout her medical training, she also worked in both laboratory and clinical research settings. She completed a residency in Integrative Family Medicine in Atlanta, GA, with a specialty in Functional Medicine and chronic disease. Dr. Layton was the architect for the successful effort to license Naturopathic Medicine in RI, and was on the steering committee for the Integrative Medicine at Brown group before moving to Massachusetts in 2015.

A primary goal for Dr. Layton is to educate and empower her patients to achieve and maintain their most vibrant health. Dr. Layton is a certified instructor of the Stress Management and Resiliency Training (SMART) Program created by the Benson-Henry Institute for Mind-Body Medicine at Massachusetts General Hospital. This is an excellent introduction to Naturopathic practices, and a powerful tool for existing patients.

Dr. Layton lives in Winchester with her husband, 2 kids, and dog, Juno. She is a member of the Winchester Conservation Commission, and on the Steering Committee for the Winchester Master Plan. She can be found running, hiking, playing tennis (badly, but enthusiastically), and can be heard laughing throughout the office.

To contact Dr. Layton, please call (781) 721-4585, email, or learn more at

Liz Allen Liz Eiler

Welcome! I am Liz Allen, Massage and Craniosacral Therapist at Winchester Natural Health Associates. My goal is to support your journey toward balance and whole-being wellness through Integrated Massage and Craniosacral Therapy.

Please don’t hesitate to contact me with any questions: 617-460-1660. You can also check out my new website at:

My journey began in high school, when I first became aware of difficulty learning in traditional settings. It wasn’t until I was in the Solidago School of Massage Therapy that I realized that content, for me, was everything. I was instantly taken with the way the human body functioned and the different ways it could heal. After completing my Massage training in 2006 I continued my newfound love of education through various courses and workshops, including prenatal massage, TMJ healing and headache relief.

When I was introduced to Craniosacral Therapy through the Upledger Institute in 2016 I knew I had found a profound answer for many of my clients. As Massage focuses on using pressure and manipulation for pain relief, in Craniosacral work many clients experienced feeling more at ease with their bodies and an even deeper, more profound sense of relaxation.

My expertise includes Deep Tissue and Swedish Massage, Craniosacral Therapy, Somatoemotional Release and Reiki. As an intuitive therapist, I am dedicated to combining any and all of these therapies to develop an individual treatment plan that will address your specific needs that day. I look forward to holding space for you to rest, unwind and discover your natural direction of ease!

troisi_2013_3x5clr_lwMarcie Troisi, MAOM, Dipl. Ac., LicAc.

Marcie D. Troisi is known as a gentle and compassionate healer who believes in treating the whole person. After experiencing the benefits of acupuncture and herbal medicine as a patient, she was so impressed that she became a licensed and board-certified practitioner in 2004. Marcie sees patients of all ages and treats not only the symptoms, but the underlying cause of many acute, chronic, and unusual cases. Her scope of practice includes acupuncture, herbal and nutritional supplements, acupressure, therapeutic magnets, Tui Na massage, therapeutic exercise, and moxibustion.

In addition to her private practice, Marcie serves on the faculty of the New England School of Acupuncture at Massachusetts College of Pharmacy & Health Sciences where she enjoys teaching Chinese Medicine graduate students 1 – 2 days per week. She has served on the editorial staff of the New England Journal of Traditional Chinese Medicine and the Boards of Directors of multiple Boston-area organizations. She was featured in the Boston Globe in 2006 and was inducted into the Cambridge Who’s Who Registry of Executives and Professionals in 2007.

Marcie graduated from the New England School of Acupuncture and holds a Master’s degree in Acupuncture and Oriental Medicine (MAOM). She is licensed by the Commonwealth of Massachusetts Board of Registration in Medicine, is a Diplomate of Acupuncture certified by the National Certification Commission for Acupuncture and Oriental Medicine (NCCAOM), is certified in Healing Community Trauma and Acupuncturists Without Borders, and in Auricular Acupuncture by the Auriculotherapy Institute, and is a member of the Acupuncture Society of Massachusetts. She resides in Winchester with her family.

To contact Marcie Troisi, please call (781) 721-4585 or
email her at