Meet Our Team

Dr. Larry Stonesifer

Larry D. Stonesifer, MD, FACP, FACE

Board Certified Endocrinologist

Dr. Stonesifer is certified by the American Board of Internal Medicine and the subspecialty Board of Endocrinology and Metabolism, and has been in private practice since 1984. Full Bio


Marcia Miller

Marcia K. Miller, BSN, MSN, ARNP

Bachelor of Science, Master of Science in Nursing,

Advanced Registered Nurse Practitioner

Marcia Miller joined Dr. Stonesifer’s endocrine practice in 2004 and specializes in treating people with Type 1 and Type 2 diabetes. She is a certified Family Nurse Practitioner. Full Bio


Marjorie Sladek, BSN, MSN, ARNP

Bachelor of Science in Nursing, Master of Science in Nursing, Advanced Registered Nurse Practitioner

Marjie received her Bachelor of Science degree in Nursing in 1976 at California State University in Los Angeles and a Masters degree in nursing in 1981 at Loma Linda University. Full Bio


Kathy Phelan

Kathy Phelan

Practice Manager

Kathy joined Dr. Stonesifer in 1992, with a shared vision of creating an all inclusive center of excellence for patient care and the treatment of endocrine disorders.


Nancy Doty, RN, BSN, CDE

Nancy Doty, RN, BSN, CDE

Certified Diabetes Educator
Endocrine Nurse Specialist













Joyce, Kendra and Davina (left to right)

Front Office Staff

“Our staff works as a team. We strive to achieve a continuity of care and provide you with a strong sense of familiarity, from the calls into the office, to a personal greeting from our friendly receptionists.”


Lynea Young (left)
Shauna Rider (right)

Certified Medical Assistants

“Caring heart, always ready with a smile.”


Cindy M. Stock, CMA (left)
Tammy R. Lovie Yokum, CMA (right)

Clinical Research Coordinators

“Our mission is to provide detailed care while researching advances in health care. We enjoy working with patients from all backgrounds. We look forward to helping you help yourself while helping others in our supportive environment."