Meet Our Providers
At Third River Medical, our dedicated providers restore lives through the power of innovative, minimally invasive outpatient treatments.
With deep expertise in diabetes care, wound healing, and treating other debilitating conditions, our team delivers both immediate relief and lasting results—even for the most complex cases. We're proud to lead with compassion, clinical excellence, and unwavering commitment to every patient's journey.
Dr. Omar Davis
Dr. Davis is a well-known and highly respected lnterventional Nephrologist and Board-Certified Nephrologist with over 18 years of endovascular experience. In 2007, he and his partner, Dr. Natarsha Grant, established the first outpatient vascular access lab in Memphis to provide needed vascular access care to the regional End Stage Kidney Disease patients. Dr. Davis specializes in Dialysis access care as well as the diagnosis, treatment of Peripheral Arterial Disease (PAD) and amputation prevention and is a leader in diversity and inclusion in vascular care. He focuses on relationships with his patients through compassionate and individualized care.
Dr. Davis's mission is to provide his patients with state-of-the-art technology, comprehensive patient education, and his gifted team of healthcare professionals. Dr. Davis has performed more than 18,000 vascular procedures over the past 18 years.
“We save lives by saving limbs, not every case is a cause for amputation.”
Tonya Highlander,
RN, FNP
Tonya began her nursing career as an RN and has been practicing as a Family Nurse Practitioner for 25 years. Her areas of practice have been congestive heart failure, electrophysiology and interventional cardiology. Tonya’s role at Third River Medical focuses on vascular, wound care and hyperbaric oxygen therapy.
She takes a collaborative approach to caring for patients, working closely with her colleagues, patients, families and referring providers to provide a “true team” approach to each patient’s care.
Cara “Yvonne” Massey,
MSN, FNP-C
CERTIFIED WOUND CARE PROFESSIONAL
With a Master’s in Nursing and board certification in family practice as a Nurse Practitioner, Yvonne has over 30 years of experience in burn care, trauma, and advanced wound healing—including hyperbaric oxygen therapy.
Yvonne brings deep expertise and heartfelt dedication to every patient she sees.
Why Choose Third River Medical for Your Diabetes Care?
