About Us

Feeling better starts with a provider who listens and creates a plan that works for you. If you’ve ever felt rushed, unheard, or frustrated — we get it.

At Third River Medical Oxford, we’re changing the way healthcare feels.

We take time to listen, laugh, and truly understand your needs — because mindful communication isn’t just part of care… it is care.

Why Choose Third River Medical?

Healthcare shouldn’t be cold or complicated. It should feel like home.
Here’s what makes Third River Medical different:

Expertly Trained Staff

Offering expert, interpersonal care by staff with over 20 years of combined experience.

Up-to-Date Practice Guidelines

Providing fast, complete, efficient care to all patients of any age!

Inclusive Insurance Policies

Accepting most all insurances including Wellcare and Medicare Advantage Plans. Self-pay rates are less than most any other local clinic!

Meet Our Providers

Behind every great visit is a great provider — and ours are some of Oxford’s best.
They’re experienced, compassionate, and genuinely love what they do.

Third River Medical Oxford - OneCare Medical - Dr. Parnell

Donald H. Parnell, Jr., M.D.

Physician‑Led Wound Care | Third River Medical Oxford
Dr. Donald Parnell leads the physician‑driven wound care program at Third River Medical Oxford with a heart for helping patients move from fear and uncertainty to renewed confidence in their health.

With deep expertise in treating chronic and complex wounds—including diabetic ulcers, vascular ulcers, pressure injuries, surgical wounds, wound vac management, skin grafts, and debridement—Dr. Parnell provides compassionate, evidence‑based care tailored to each patient’s unique needs.

His mission is simple and deeply aligned with Third River Medical’s purpose:
to renew health, restore lives, and guide patients toward better outcomes with clarity, kindness, and hope.

Patients trust Dr. Parnell for his calm guidance, clinical excellence, and unwavering commitment to helping them understand their condition, prevent complications, and begin a genuine path toward healing.

Cassie Austin,

DNP, MSN, FNP-C

Family Practice & Vascular Screenings | Third River Medical Oxford

Cassie Austin brings a calm, compassionate presence to Third River Medical Oxford, providing whole‑patient care grounded in sincerity, clinical skill, and a heart for helping people thrive.

With a background spanning emergency care, med‑surg, and family medicine, Cassie offers advanced expertise in chronic condition management, preventive care, medical cannabis certifications, and a range of minor procedures. She takes time to listen, teach, and partner with each patient—helping them understand their health and feel supported every step of the way.

Cassie’s greatest joy comes from caring for patients and crafting the most effective, personalized treatment plan for each individual. Her goal is rooted in the mission of Third River Medical: to improve health outcomes, uplift patients with knowledge, and restore hope in what’s possible.

Cassie is a trusted resource for families and individuals seeking compassionate care, clear guidance, and a renewed path toward wellness.

Primary care provider Cassie standing outside OneCare Medical clinic in Oxford MS.

Stop Waiting. Start Healing.

Whether you walk in or book online, you’ll always be welcomed with warmth and a smile.