Nathan Hatfield, DO

Abdul Nadir, MD, is a gastroenterologist specializing in hepatology with a focus on disorders of gut-brain interaction, therapeutic endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound (EUS) procedures. He offers specialized treatments including esophagogastroduodenoscopy (EGD), colonoscopy, ERCP, EUS-guided liver biopsy and percutaneous endoscopic gastrostomy (PEG) tube placement and management. His clinical interests include hepatology, transplant hepatology and disorders of gut-brain interaction. Dr. Nadir takes a holistic approach to patient care, collaborating with a network of providers to ensure patients receive the highest quality care. He develops cutting-edge, evidence-based and personalized treatment plans tailored to each patient. His practice emphasizes comprehensive gastroenterological care with close attention to individual needs. Originally from Pakistan, Dr. Nadir moved to the United States in 1990 and now calls Arizona home. He has been practicing gastroenterology for 28 years and remains passionate about caring for patients. Dr. Nadir is fluent in both English and Urdu, allowing him to connect with a broad and diverse patient population.

Jeffrey Bauer, PA-C, is a physician assistant specializing in orthopedic spine surgery, with a particular focus on trauma and critical care. He offers a range of specialized treatments, from minimally invasive procedures such as microdiscectomy, laminotomy and laminectomy, to more complex surgeries including cervical and lumbar fusion. His surgical expertise also includes cervical disc replacements, performed when appropriate to address nerve impingement and spinal instability. Jeffrey takes a collaborative approach to patient care, emphasizing the importance of patient education in achieving the best possible outcomes. He ensures patients gain a clear understanding of their spinal conditions and actively involves them in developing personalized treatment plans. His practice prioritizes open communication and shared decision-making to support successful surgical results and recovery. Originally from Higley, Arizona, Jeffrey brings unique experience as an Army veteran who trained combat medics with a focus on tactical field care. Outside of medicine, he enjoys woodworking and contributes to academia by regularly lecturing at a local physician assistant program and precepting physician assistant students, enriching his practice with a well-rounded perspective.