The medical office team consists of Gail Eberharter MD, Karen Callagy PA,  Amber Warren, PA, Jean Spinazola, Meagan Omsberg LPN, Rachel Cass CMA, Jennifer Small, Melissa Barber, Cindy Poot, and Bruce Rankin.

We refer to many excellent practitioners in our community and educate ourselves on their expertise. This includes, physicial therapy, dentistry, counseling and massage.


Gail Eberharter Rankin MD

Gail has been a family physician in Idaho since she completed the Family Practice Residency in Boise in 1985. Her MD degree is from the University of Washington and she has been board certified in Family Medicine for 25 years. She is currently Board Certified in Medical Acupuncture and has been practicing acupuncture since 1996.  Gail was in the first group of practitioners to be certified by the Institute for Functional Medicine after a 5 year course of study. She finds the combination of Functional Medicine and acupuncture is a powerful tool for recovering health and true prevention. Her practice has always been holistic and integrative with Functional Medicine helping to address the root causes of chronic illness and offer meaningful prevention.

Karen Callagy, PA

Karen joined us in August of 2015.  She relocated to Idaho with her family form North Carolina.  She received her M.S. in Physician Assistant studies from the Arizona School of Health and Sciences in 2005.  She has been actively practicing and studying Functional Medicine for several years and finds great satisfaction in the success her patients attain through nutritional counseling, lifestyle changes, and appropriate supplements.  She is actively pursuing certification in Functional Medicine.  She is happily married with 3 young children.

Amber Warren, PA

Amber joined the practice in September of 2016.  She received her Masters in Physician Assistant Studies at Midwestern University in 2007.  She is actively pursuing certification in Functional Medicine.  She is passionate about nutrition and lifestyle modifications in helping patients achieve improved wellness, and in working with patients who want to pursue an active role in their health.  Amber also enjoys most anything outdoors with her husband and three boys.

Office Staff

Meagan Omsberg, LPN

Meagan is the head nurse and also a nutritional consultant for FIMI. She joined our practice in August of 2011.She has emergency room experience and was accepted into Idaho State Universities ADRN program as of December 2016. She is enjoying her immersion into Functional Medicine. Meagan is a gourmet cook and loves spending time with her family. She is currently working toward her RN degree with great success.

Ashley Redman

Ashley joined us in September of 2017 as a Medical Assistant.  She recently moved back to Idaho after living in Salt Lake City for 2 1/2 years. She wants to raise her new son in Idaho, closer to her family. Outside of staying busy with her son, Ashley enjoys the outdoors, art, volunteering, and entertaining her 3 dogs, hedgehogs, and rabbits.

Cindy Poot

Cindy joined us in October 2017. She moved to Idaho from Oregon in 2011 where she obtained training for medical billing and coding. She has had some training as a medical assistant also. She is working for FIMI as an experienced biller and receptionist. She and her family are feeling very blessed to be opening an organic farm in Kuna.

Melissa Barber

Melissa joined us in October 2017. She started working in the medical field 15 years ago and has held the position of office manager, authorization specialist and medical biller. She is working for FIMI as in the medical billing and receptionist positions. She was born and raised in Idaho and loves spending time outdoors. She has four wonderful children who always keep her on her toes. In her spare time she enjoys playing the piano, reading and spending time with her husband and children.

Bruce Rankin

Bruce joined the clinic after retiring from a career with the Boise Fire Department as a firefighter and Division Chief of Operations.  He works as liason to the clinic accountant and oversees payroll, financial planning and overall financial organization.

Jean Spinazola

Jean is our Clinic coordinator and Office Manager. She has a degree in Natural Resource Management, but changed gears in 2000 and started working at St. Alphonsus before coming to work with Dr. Eberharter in 2006. She tries to support the staff in whatever way is needed keeping up with the ever changing world of Functional Medicine and insurance companies.  She also is responsible for computer upkeep and substituting when needed at the front desk or as a medical assistant. She enjoys working at an office with such a great mission and the bonus of doing so with such a wonderful staff.

Rachel Cass, CMA

Rachel joined FIMI in March of 2017.  She began working as a medical assistant 10 years ago in Portland, Oregon.  She has been working as an M.A. in Boise for the past 6 years.  She has experience in obgyn, family practice, and urgent care.  She enjoys volunteering at local animal shelters with her partner, Duncan, pet-sitting, and taking her dog, Sir Francis Bacon on walks in Camel’s Back Park.  When she isn’t at the office helping our patients, she is often pet-sitting at her own business, Sittin’ Pretty Pet Sitting.

Jennifer Small

Jennifer is leaving FIMI in late November 2017. These are her parting words:

“I have decided to dive whole-heatedly into following my burning desire of starting an exciting new chapter of my life.  I’ve given my job notice, stored my possessions and am leaving to go back to Asia to pursue getting my TEFL certification, will then travel to teach in a small rural farming and fishing community in the Philippines, by the ocean.  While there, I have hopes of assisting with a program that works with rehabilitating victims of sex trafficking.

Working with women and children has been at the forefront of my heart and mind since experiencing my own healing transformation.  Also during my journey, I wish to incorporate my love of yoga, Reiki healing, photography and writing.  I will keep you present of my whereabouts, experiences, challenges, humerous moments… through my postings and soon to come blog.”

Other Integrative Practitioners and Helpers

Robert Spencer

Robert has officially retired from his career teaching Feldenkrais and life coaching/counseling for individuals. We will miss his classes and seeing him frequently at the office. Hopefully he will drop in with his guitar occasionally to serenade us.


MacPhe who prefers to go by Mac, is one of the greeters at our clinic. He was rescued from the Meridian Shelter at the age of four and now is  seven years old. The shelter said he is a Cairn Terrier, though he might have a little of something else too. In his off time he likes to go for walks with his best buddy Jean and chase squirrels in his back yard.