Meet Our Providers

Meet Eric Shreder, DO


Dr. Eric O. Shreder is Board Certified in Family Medicine, and Osteopathic Manipulative Medicine. He is a FAA designated Senior Aviation Medical Examiner (AME) along with being HIMS (Human Intervention Motivation Study) certified. Dr Shreder is also a Commercial Pilot and Certified Flight Instructor. He is married with two children and enjoys: hiking, hunting, motorcycle riding and scuba diving, among other outdoor interests. Voted a top doctor in the East Valley Tribune.

Dr Eric Shreder is a friendly, outgoing, social guy who took an interesting path into medicine. He grew up on the east coast in Salem, Massachusetts. He graduated with Honors from Boston College, learned to fly airplanes and later obtained a Masters Degree from Villanova University with a degree in Experimental Psychology. He then took a job with Boeing, McDonnell Douglas and MD Helicopters as a cockpit design engineer. Along the way, he earned both Commercial and Flight Instructor ratings.


After 10 years in the aerospace industry, a personal family medical tragedy spurred a passion for working not just with machines – but with people. Applying to medical school, he was one of only a few selected as a “WICHE” scholar for the state of Arizona. Dr. Shreder completed a Family Medicine Residency with a strong emphasis in Dermatology. Since graduation, he has co-owned Community Family Medicine at Val Vista Lakes, Pierpont Family Medicine, and now Full Circle Health in Mesa – With an emphasis on getting to know the whole person, not just their diseases, he was voted as the top General Practice physician in Gilbert Arizona in 2014.

Dr. Shreder has never stopped training and expanding his area of expertise. Not satisfied with not being “sick,” his emphasis is on being and looking “well.” Believing medicine of the future must emphasize personal fitness, neutraceuticals, bioidentical hormones as part of an age management strategy, Dr. Shreder is a member of the American Association of Anti-aging Medicine (A4M), and has trained extensively with Dr. Neil Rousier – a guru in hormone replacement. He has also trained extensively at the expert level in Aesthetic Medicine using Botox, Fillers, as well as, lasers, ultrasound, and Coolsculpting.


  • B.A Boston College -1981
  • M.S. Villanova University – 1983
  • D.O. Kirksville College Of Osteopathic Medicine- 1998
  • Traditional General Practice Internship, and Family Practice Residency with emphasis in Dermatology at Midwestern University.

Awards and Distinctions:

  • 2008 Patient’s Choice Award
  • 2009 Patient’s Choice Award
  • 2010 Patient’s Choice Award
  • 2010 Compassionate Doctor Recognition
  • 2011 Patient’s Choice Award
  • 2011 Compassionate Doctor Recognition
  • 2012 Patient’s Choice Award
  • 2012 Compassionate Doctor Recognition
  • 2012 Patient’s Choice 5th Anniversary Award
  • 2014 Patient’s Choice Award
  • 2014 Compassionate Doctor Recognition
  • 2014 Best of Gilbert Primary Care East Valley Tribune

Meet Our Nurse Practitioners


Sarah DeRubeis, FNP-C

Sarah was born and raised in the suburbs of Pittsburgh, PA and moved to Arizona in 2007. She completed her bachelors of nursing degree at Duquesne University in Pittsburgh, and her Master’s of Nursing as a Family Nurse Practitioner at Grand Canyon University in 2010. She is board certified by the American Academy of Nurse Practioners.

Sarah is experienced in family medicine, sports medicine, and hormone replacement therapy. She also is proficient in providing Botox, facial filler, and other injectables to keep you feeling and looking your best. She is passionate about helping her patients to optimize their health and youthful vitality by implementing the best of family practice along with disease prevention and overall improvement in quality of life. In her spare time Sarah enjoys hiking, yoga, traveling and spending quality time with her two daughters and cat.


Christal Yeager, FNP-C

Christal was born and raised in Wyoming. From there she began her undergrad journey in Idaho with a degree in communications and public relations. After completing her first degree, she decided to return and obtained her BSN. After becoming a nurse Christal gained experience working in the ER, ICU, and cardiovascular units, she has also worked in rural access hospitals and great big trauma 2. She then attended Grad School in Florida at Florida Gulf Coast University. She has had the opportunity to practice nursing in various states such as, Idaho, New Mexico, Florida, and now Arizona. Christal moved to Arizona after graduating to be with her husband who is an Arizona native. Christal is an animal lover who enjoys hiking, biking, and being outdoors. She loves helping others experience their best quality of life.

Jillian Knapp, FNP-C

Jillian Knapp is a 3rd generation Phoenician who was born and raised in North Central Phoenix. Jillian completed her undergraduate studies at the University of Arizona and Grand Canyon University. She practiced as an Emergency Nurse for several years in both the US and Australia before completing her graduate studies at Grand Canyon University. Jillian is a certified Family Nurse Practitioner with Integrative and Functional Medicine training. Her practice aims to provide comprehensive care for patients of all ages. This includes an emphasis on preventative medicine as well as management of acute and chronic disease states.

When out of the office, Jillian enjoys spending time with her husband and two energetic sons. She also enjoys reading, travel, gardening, and the sunny Arizona skies.

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