Meet Our Providers

Vishal Agrawal, MD

Vishal Agrawal, MD, is a fellowship-trained, double board-certified pulmonologist and critical care physician based in Dublin, Georgia. As the founder and president of Physicians Staffing Solutions, he leads one of Central Georgia's premier pulmonary practices. His clinical interests include advanced bronchoscopy (EBUS, navigational bronchoscopy), pleural disease, lung cancer diagnosis, and complex critical care. A graduate of the University of South Carolina summa cum laude and Medical University of South Carolina School of Medicine, he brings academic rigor and practical depth to every patient encounter and staffing decision.

Casey Morris, MD

Casey Hudson Morris, MD, is a fellowship-trained pulmonologist and critical care specialist based in Dublin, Georgia. Dr. Morris combines deep clinical expertise in respiratory disease management, complex critical care, and sleep medicine with proven operational and physician leadership. Trained at Baylor University Medical Center in Dallas, TX, Dr. Morris has served as fellowship chief, medical director, clinical faculty, and residency sub-specialty faculty, making him a rare combination of frontline clinician and healthcare administrator.

Craig Rosebrock, MD

Craig Rosebrock, MD, is a fellowship-trained, double board-certified pulmonologist and critical care physician based in Dublin, Georgia. His clinical interests include bronchiectasis, advanced airway management, and the stabilization of critically ill patients. After completing his fellowship at the University of North Carolina School of Medicine, Dr. Rosebrock spent years managing patients in medical, surgical, and trauma intensive care units across the United States. Today, he maintains an active practice in pulmonary and critical care medicine and draws upon an extensive background in academic and community ICU settings to provide a comprehensive and adaptable perspective on the management of complex patients.

Meera Ranganthan, MD

Dr. Meera Ranganathan, MD, FCCP, is a triple board-certified pulmonologist, critical care physician, and sleep medicine specialist with more than 25 years of experience treating complex respiratory and sleep disorders. She completed her fellowship in Pulmonary, Critical Care, and Sleep Medicine at the University of Medicine and Dentistry of New Jersey and has served in leadership roles across the United States, New Zealand, and India, including as Director of multiple sleep laboratories. Dr. Ranganathan is known for her compassionate, patient-centered approach and her commitment to providing personalized, evidence-based care.

Britney Smith, NP

Britney W. Smith is a compassionate and highly credentialed Family Nurse Practitioner practicing in Dublin, Georgia. With a graduate degree from South University and a foundation in neuro-ICU nursing from Medical Center Navicent Health, she brings a rare clinical depth to advanced practice pulmonology. Britney independently manages patients with COPD, asthma, ILD, bronchiectasis, lung cancer, and a range of respiratory conditions. She also serves as senior NP and preceptor, helping shape the next generation of advanced practice providers in Georgia.

Sara Burdette, NP

Sara Burdette, MSN, AGACNP-BC, is a board-certified Adult-Gerontology Acute Care Nurse Practitioner specializing in pulmonary, critical care, and sleep medicine. With a background in high-acuity intensive care, she has extensive experience managing complex medical conditions across trauma, cardiovascular, neuro, and medical ICU settings. Sara is committed to providing compassionate, evidence-based care and works closely with physicians to deliver personalized treatment that helps patients achieve the best possible outcomes.

Morgan Whitaker, NP

Morgan Whitaker, MSN, APRN, FNP-C, is a board-certified Family Nurse Practitioner with a strong background in critical care and primary care across the lifespan. She earned her Master of Science in Nursing from Columbus State University, graduating summa cum laude, and has extensive experience caring for critically ill patients in intensive care settings. Morgan is passionate about preventive medicine, chronic disease management, and delivering compassionate, evidence-based care that supports long-term health and wellness.

Alison Calhoun, NP

Alison Calhoun, MSN, FNP-C, is a board-certified Family Nurse Practitioner with more than 20 years of nursing experience spanning primary care, cardiology, perioperative services, hospice, and veteran healthcare. She provides comprehensive care for patients of all ages, with a focus on preventive medicine, chronic disease management, and compassionate, patient-centered treatment. Alison is dedicated to building lasting relationships with her patients while delivering personalized, evidence-based care that supports lifelong health and wellness.