Our Team

Dr. Mark grew up in the suburbs of Chicago. He earned his undergraduate degree in Biochemistry from the University of Illinois and his medical degree from Loyola University in Chicago. He completed a family practice residency at St. Vincent Health Center in Erie, Pennsylvania. He furthered his training with an obstetrics fellowship at Brackenridge Hospital in Austin, Texas. He joined Marshall Medical Associates in 2004 where he practiced under the traditional insurance model until early 2017. He opened Whole Family Direct Care in April of 2017 in an effort to bring back the traditional family doctor model. He is board certified in Family Medicine and a member of the American Academy of Family Physicians and the Michigan Academy of Family Physicians. In 2016, Dr. Mark became the Medical Director of Oaklawn Hospice in addition to working as a Family Physician.

He resides in Marshall and has three grown children. He enjoys gardening, swimming, running, and reading in his spare time. 

Sarah grew up in northern Michigan before moving to Indiana and earning an undergraduate degree in biochemistry from Tri-State University (now known as Trine University). She started as a CNA in 2008 and earned a nursing degree from Kellogg Community College in 2010. While enjoying a successful nursing career and starting her family, she continued to work her way through graduate school. She graduated from Spring Arbor University in 2018 as a Nurse Practitioner with a focus in Family Medicine.

After beginning her career as a Family Nurse Practitioner at Marshall Medical Associates, she transitioned to Bronson Family Medicine in Marshall before joining Dr. Mark and Tim at Whole Family Direct Care in early 2021. Sarah is board certified by the American Association of Nurse Practitioners and is excited to be able to practice in the Direct Primary Care model. She feels that it has allowed her to have more time focusing on the patients and helping them achieve their optimal levels of health.

In her spare time, Sarah is a dedicated mom of three children and enjoys running and yoga.

Kimberly Sheldon is a lifelong Marshall resident with several years of experience in healthcare. Her background includes working as a CNA, medical assistant, and in a phone nursing role. She is excited to bring that experience to her new position as office manager and help serve the community she has always called home.

Outside of work, Kimberly is a proud mother of three who enjoys spending time with her family, going for walks, and watching sports.