Mario Sertich, M.D.
Dr. Sertich is board certified in neurological surgery. He is a graduate of New York Medical College and completed his residency at Baylor College of Medicine. He has been with NSI since 1981. Dr. Sertich maintains memberships with the Ohio State Medical Association and Lorain County Medical Association.
Boo Yoo, M.D.
Dr. Yoo is board certified in neurological surgery. He is a graduate of Hahnemann University and completed his residency at Drexel University. He has been with NSI since 2018. Dr. Yoo maintains memberships with the American Association of Neurological Surgeons.
Sunjay Mathur, M.D.
Dr. Mathur is board certified in physical medicine and rehabilitation as well as pain management. He is a graduate of Case Western Reserve University and completed his residency at McGraw Medical Center and a fellowship in pain medicine at University of Michigan. He joined NSI in 2014.
John Gerhard, D.P.M.
Dr. Gerhard is pending board certification in podiatric medicine. He graduated from the Ohio College of Podiatric Medicine and completed his residence at St. Vincent Charity Medical Center. He joined NSI in 2017.
Gale Hazen, M.D.
Dr. Hazen is board certified in neurological surgery. He is a graduate of Rush Medical College and completed his residency at St. Luke’s Hospital. He has been with NSI since 1992. Dr. Hazen maintains memberships with the Ohio State Medical Association and Lorain County Medical Association.
Parshotam Gupta, M.D.
Dr. Gupta is board certified in anesthesiology with qualifications in pain management. He is a graduate of Punjab University and completed his residency at Saskatchewan University. He has been with NSI since 2004.
Sanjay Kumar, D.O.
Dr. Kumar is board certified in pain management and physical medicine and rehabilitation. He is a graduate of the University of Michigan and completed his residency at University of Michigan department of Rehabilitation and Physical Medicine. He joined NSI in 2007. He is a board member of the PCNO.
Charles Choi, M.D.
Dr. Choi is board certified in anesthesiology with added qualifications in pain management. He is a graduate of Kyungpook National University and completed his residency at Case Western Reserve University. His previous practice was in Cuyahoga County for more than 25 years. He joined NSI in 2012. Dr. Choi maintains memberships with the Ohio State Medical Association and Lorain County Medical Association.
Joanne Holiday, M.D.
Dr. Holiday is board certified in physical medicine and rehabilitation. She is a graduate of The University of Toronto and completed her residency at William Beaumont Hospital and a fellowship in spine medicine at Cleveland Clinic. She joined NSI in 2013.
Kevin Dusenbury, D.P.T.
Dr. Dusenbury is board certified in physical therapy with a doctorate from St. Augustine University and Master of Science in physical therapy from Cleveland State University with an emphasis on spine and orthopedics. He has completed internships at the Cleveland Clinic Foundation, University Hospitals, EMH Health System and Heather Hill Rehab Hospital. He has been with NSI since 2009.
Kathy Dalzell - Certified Nurse Practitioner
Kathy received her master of science from Kent State University. She has been with NSI since 2017.
Caryn Delisio - Certified Nurse Practitioner
Caryn received her master of science from Kent State University. She has been with NSI since 2012.
Rebecca Suit - Certified Nurse Practitioner
Rebecca received her master of science from Malone University. She has been with NSI since 2015.
