Our Philosophy

The way healthcare is delivered has changed, and not for the better.  People are faced with increasing insurance premiums, with higher deductibles and less access to care than ever before.  Doctors are being told by insurance companies how to practice medicine.  Dr. Ross felt it was time to take control back and restore the patient-physician relationship as it was supposed to be…a direct primary care relationship model that eliminates the hassles and restrictions of insurance.  It was time to make caring for people more personalized with an emphasis on improved customer service.

James Ross, M.D.

Dr. Ross earned his Bachelor of Arts degree in biology at Saint Mary’s University in San Antonio, TX in 1995. He completed his medical degree at the Texas Tech University School of Medicine in Lubbock, TX in 1999. He completed his residency through the In His Image program in Tulsa in 2002. He is board certified in family medicine and hospice & palliative medicine.

Prior to founding Ross Medical Care, Dr. Ross was an employed physician since finishing his residency in 2002.  He had a thriving obstetrics practice in addition to a very robust family medicine panel. Dr. Ross has long been recognized for his compassionate and excellent care of his patients.  However, as the demands of corporate medicine increased in the face of America’s healthcare crisis, Dr. Ross knew it was time to make a change.  It was time to practice medicine the way he envisioned it as a young boy, dreaming of making a difference in people’s lives.  Ross Medical Care’s doors opened in December of 2015, and we are proudly serving people in the Tulsa area, with a truly personal and customized approach to their healthcare.

Carol Voigtlander, APRN-CNP

Carol Voigtlander, an Advanced Practice Nurse, has been interested in natural health and nutrition for over 25 years. She grew up in a home where her mom was a dietitian and stressed healthy eating. She remembers when her mom would ration out her Halloween candy and throw most of it away. As a result, nutrition has been a major role in her life since childhood.

While she obtained her Bachelor in Science degree in Nursing from Oral Roberts University, she learned about the importance of the relationship between body, mind and spirit which she incorporates into her daily practice. When Carol was working in hospitals, she realized that traditional medicine did not have all the answers, so her passion for treating the whole person without drugs or chemicals grew. Since then she is constantly looking at new ideas to help individuals towards health.

Carol also has a Masters in Nursing Education. She enjoys teaching all her clients during their appointments. In addition, she has lectured on numerous topics including: Nutrition and its Relation to Health and Disease, Colon Health, Eating Healthy through the Holidays, Females and their Hormones, Good Fats/Bad Fats and Oxygen Therapy. She has lectured to the public and health care professionals both locally and internationally.

Jenna Musgrove, PA-C

Jenna Musgrove, PA-C, originally from Southern Oklahoma, received her Master’s of Health and Science as a Physician Assistant from Oklahoma State University in 2012 and has been with Ross Medical Care since 2015. She enjoys the family practice setting and the variety of traditional, functional and integrative healthcare that Ross Medical Care provides. Prior to going to PA school Jenna worked as a Licensed Athletic Trainer.

She resides in Tulsa with her husband, daughter and 2 dogs, named Gundy and Sanders. In her spare time, she enjoys spending time with her family and cheering on the OSU Cowboys.

Dr. Frankie Frieda, DNP, APRN, FNP-BC

Dr. Frankie Frieda, DNP, APRN, FNP-BC is a board certified family nurse practitioner. She has 18 years of nursing experience specializing in cardiology and emergency medicine. She graduated from University of Tulsa with honors earning her Doctorate of Nursing Practice.

Dr. Frankie enjoys spending time off with her family, which includes her husband, their 3 children and 3 French Bulldogs. Some of her favorite things to do include watching her son play basketball, traveling, shopping and interior design.

Heather Sheverbush, DNP, APRN, FNP-BC

Dr. Heather Sheverbush, DNP, APRN, FNP-BC is a board-certified family nurse practitioner who joined the Ross Medical Care team in January 2024. She graduated with honors from The University of Tulsa in May of 2022 with her Doctor of Nursing Practice (DNP) and previously earned her Bachelor of Science in Nursing (BSN) from Missouri Southern State University in May of 2018. Previously the Center Director of Low T Center in Tulsa, Oklahoma. Dr. Heather is an expert in Men’s Health and Testosterone Therapy. She also enjoys providing comprehensive, holistic primary care to all ages, from birth to elderly.

She resides in Bixby, Oklahoma with her husband, son, two Dachshunds and two cats. Dr. Heather enjoys spending time with her family, watching football (BOOMER SOONER and GO CHIEFS), travelling, shopping and listening to worship music.