Sheryl A Stynchula, CRNP

Catherine Siegfried is a certified physician assistant (PA-C) who specializes in cardiac surgeries. She provides patients with pre-operative and post-operative consultations and care plans. Catherine is committed to patient-centered care and sees patients ages 35 to 90. She earned a Bachelor of Science degree in biology from Duquesne University in Pittsburgh, Pennsylvania, and a master’s in physician assistant studies from Alderson Broaddus University in Philippi, West Virginia. Catherine is certified by the Physician Assistant National Certifying Examination.

Rasha Abdulmassih, MD Rasha Abdulmassih, MD is an infectious disease physician with AHN Medicine Institute. She is skilled at staphylococcus infection, septic arthritis, surgical site infection, hardware infection, discitis, osteomyelitis, central nervous system infection, and HIV/AIDS. She went to medical school at Damascus University School of Medicine in Damascus, Syria. Upon completion of medical school, she did her residency at Western Michigan University School of Medicine in Kalamazoo, Michigan and her fellowship in infectious disease at AHN in Pittsburgh, Pennsylvania. Dr. Abdulmassih is certified by the American Board of Internal Medicine and the American Board of Infectious Disease. She sees patients age 21 and older.

Dr. Ashish Sharma is a nephrologist with AHN Medicine Institute, specializing in the diagnosis and treatment of acute and chronic kidney disorders and renal diseases. He is skilled at evaluating and managing the factors most commonly associated with kidney disease, such as fluids, electrolytes, and acid-base balance. Dr. Sharma received his Bachelor of Medicine and Bachelor of Surgery from Jawaharlal Nehru Medical College in Aligarh, India. He completed his residency in internal medicine at University of Pittsburgh Medical Center – Mercy Hospital in Pittsburgh, Pennsylvania. He completed his fellowship in nephrology and hypertension from Allegheny Health Network in Pittsburgh, Pennsylvania. Dr. Sharma is certified by the American Board of Internal Medicine in nephrology. He approaches each patient with thoroughness, compassion, and trust. He sees patients ages 18 and older. Patients can make an appointment with Dr. Ashish Sharma at AHN Nephrology Associates.