Our Providers

Participating in MD Anderson Cancer Network at OhioHealth


At Columbus Oncology and Hematology Associates, our physicians and staff make compassionate and quality care their number one priority. It’s our level of care, experienced staff and state of the art facility that set us apart from other cancer clinics.

Read about the Benefits of choosing a physician with Columbus Oncology and Hematology Associates.

Sonia M. Abuzakhm, M.D.

Dr. Sonia Abuzakhm graduated magna cum laude and with honors in the liberal arts from The Ohio State University with a Bachelor of Science in Chemistry. She received her medical doctorate from Northeast Ohio Medical University. Dr. Abuzakhm completed Internal Medicine residency at The Ohio State University, where she was awarded the “Senior Resident Teaching Award.” She then completed Hematology/Oncology fellowship at The Ohio State University, James Cancer Hospital.

Dr. Abuzakhm is board certified in Internal Medicine and Medical Oncology.

She is a native of Canton, Ohio, and now lives in Dublin with her husband.

Scott C. Blair, M.D.

Dr. Blair is a native of Columbus. He graduated from Ohio University and the Medical College of Ohio at Toledo.

His fellowship in Hematology and Medical Oncology was done at the Wayne State School of Medicine (Detroit).

Since completing his training in 1992, he has been in practice at Riverside Methodist Hospitals. He joined this group in 1995. He is board certified in Medical Oncology and Hematology.

Jarred Burkart M.D.

Dr. Jarred Burkart is a native of Cincinnati, OH. He graduated Summa Cum Laude from Vanderbilt University in three and a half years with a degree in Molecular and Cellular Biology and minor in Chemistry. Prior to attending medical school, he worked as a research assistant in a genetics laboratory at Vanderbilt University. He attended medical school at The Ohio State University College of Medicine and graduated Cum Laude.

Dr. Burkart completed his internship and Internal Medicine Residency at The Ohio State University Wexner Medical Center and completed an additional year working in the program after being selected as a Chief Resident.

Dr. Burkart completed his combined Hematology and Oncology Fellowship at The Ohio State University James Cancer Center.  He was awarded the Outstanding Clinical Care Fellow Award for his commitment to patient care during fellowship. He has worked on various research projects throughout his training, has published articles in multiple medical journals and presented some of his work at both national and international conferences. He is Board Certified in Internal Medicine and Board eligible in both Medical Oncology and Hematology.


Shabana J. Dewani, M.D.

Dr. Dewani is board certified in Medical Oncology, Hematology, and Internal Medicine. She completed her residency in Internal Medicine at Wright State University and was appointed as Chief Resident.  Dr. Dewani completed her combined fellowship in Oncology and Hematology at Wright State University. During her training, she received Special Award in Academic Excellence and was inducted into the medical honor society Alpha Omega Alpha.

Dr. Dewani was a faculty member at the Ohio State University where she was rated among the top 10 percent of physicians in the nation for patient satisfaction. She participated in multiple clinical trials investigating different therapies to treat breast, gastrointestinal and hematologic cancers.

Dr. Dewani is married, has two children and lives in Dublin, Ohio.

Christopher S. George, M.D.

Dr. George is a native of Dayton, Ohio. He completed his undergraduate degree at the University of Dayton and then attended the University of Cincinnati College of Medicine.

Dr. George’s internship and residency were at Riverside Methodist Hospital and he then completed fellowships in Medical Oncology and Hematology at the Cleveland Clinic Foundation. He is board certified in Internal Medicine, Medical Oncology, Hematology as well as Hospice and Palliative Medicine.

Dr. George joined our group in 1997. He has co-authored numerous research articles and in 2007 wrote a book chapter on lung cancer. In 2005 he received the Compassion in Medicine Award from Riverside Hospital. He was voted Best Blood Cancer Specialist in 2007 and Best Oncologist in 2010 in the 10TV/Columbus Dispatch polls.

Andrew V. Grainger, M.D.

Dr. Andrew V. Grainger is a native of St. Louis, Missouri and graduated from Saint Louis University, Summa Cum Laude, with Honors Bachelor of Arts degrees in Biology and Economics in 1993. He graduated from Creighton University School of Medicine in 1997 and went on to complete his internship and residency in Internal Medicine at The Ohio State University in 2000.  He completed a fellowship in Medical Oncology and Hematology at The Ohio State University in June of 2003.

Dr. Grainger is board certified in Medical Oncology and Hematology and served as a faculty member at The Ohio State University/James Cancer Hospital prior to joining Columbus Oncology and Hematology in 2005.

Dr. Grainger lives in Grandview Heights with his wife and two children.

Joseph K. Hofmeister, M.D.

Dr. Joseph K. Hofmeister is a native of Pittsburgh, PA. In 1989, he graduated from Villanova University, Magna Cum Laude, with a Bachelor of Science degree in Chemistry. In 1994 he graduated from the University of Pittsburgh Medical School with his M.D.

While in medical school, he performed Molecular and Flow Cytometry research, as a Post-Sophomore Year Fellow in Clinical Pathology. He completed his Internal Medicine Internship at Mercy Hospital of Pittsburgh and his Residency at University of Pittsburgh Medical Center. He completed his Fellowship in Medical Oncology and Hematology from the Ohio State University in June 2000. He is Board Certified in Internal Medicine and Medical Oncology and Hematology.

He is married to Dr. Marietta Hofmeister and has four children, three daughters, Brigitte, Abby and Isabelle and a son Theodor.

Peter Kourlas, M.D.

Dr. Pete Kourlas is native of Columbus and graduated from Upper Arlington High School in 1987. He was awarded Phi Beta Kappa his junior year and graduated Summa Cum Laude from the Honors Program at The Ohio State University with a Bachelor of Science in Economics in 1991.

Dr. Kourlas received his medical degree and completed his internship and residency in Internal Medicine at The Ohio State University. He then completed his fellowship in Medical Hematology and Oncology from The Ohio State University/James Cancer Center in 2001 where he was awarded the James V. Warren Award as most outstanding research fellow.

Dr. Kourlas is married and has four children and lives in Upper Arlington.

Dr. Kourlas evaluates and treats blood as well as cancer disorders. He is board certified in Medical Oncology and Hematology.

Kavya Krishna, M.D.

Dr. Krishna completed her combined Hematology and Medical Oncology fellowship training at The Ohio State University. She is board certified in Internal Medicine, Hematology, and Medical Oncology. Prior to starting her residency at the University of Arkansas, Dr. Krishna worked in clinical research at the Myeloma Institute for Research and Therapy. She has also worked at The MD Anderson Cancer Center in the Department of Leukemia prior to her fellowship training at the Ohio State University and James Cancer hospital.

Throughout her medical training in the United States, Dr. Krishna has received awards for excellence in medicine and outstanding clinical care of patients. She was also involved in research projects in gastrointestinal malignancies during her stay at the Ohio State University and James Cancer Hospital and has won recognition for her research.

She resides in Dublin with her two sons and husband, Dr. Som Krishna.

Erin R. Macrae, M.D.

Dr. Erin Macrae graduated Summa Cum Laude from the Honors Program at the Ohio State University with a Bachelors of Science degree in Microbiology. She received her medical doctorate from Case Western Reserve University where she graduated Alpha Omega Alpha. Dr. Macrae completed her Internal Medicine Residency at the Hospital of the University of Pennsylvania followed by a Hematology and Oncology fellowship at the Dana-Farber Cancer Institute of Harvard Medical School.

Dr. Macrae was a faculty member in the Division of Medical Oncology at the Ohio State University where she published numerous research articles on breast cancer and novel cancer therapies. Recipient of multiple awards, she was recently named 40 under 40 by Columbus Business First Magazine and received a Career Development Award by the American Society of Clinical Oncology.

Dr. Macrae is board certified in Internal Medicine and Medical Oncology, and she lives in Grandview Heights, Ohio with her husband and three children.

Nse Ntukidem, M.D.

Dr. Ntukidem completed his medical oncology fellowship at The James Cancer Hospital, The Ohio State University Medical Center.  He is Board Certified in Medical Oncology and Internal Medicine.

Dr. Ntukidem served as Clinical Associate Professor of Medicine at Texas Tech University and continues to teach medical students and resident physicians at Riverside Methodist Hospital.   He is Associate Principal Investigator at the Columbus Community Oncology Research Program (NCORP),  a National Cancer Institute research program.  Dr. Ntukidem is Section Chief of Hematology and Oncology at Dublin Methodist Hospital.

In addition to his many awards and honors, he has an exceptional ability and love of caring for patients.  He is married with three children and resides in Powell, Ohio.

Emily B. Saul, D.O.

Dr. Emily B. Saul is a native of Greenville, Mississippi.  She graduated magna cum laude from Delta State University with a Bachelor of Science in Biology.  She worked doing breast cancer research in Baton Rouge, LA prior to attending Kentucky College of Osteopathic Medicine.

Dr. Saul’s internship and residency were completed at Riverside Methodist Hospital in Columbus, where she received multiple “Power of One” awards.  Prior to beginning her fellowship, Dr. Saul was a hospitalist at Riverside Methodist Hospital.  Because of her passion in caring for patients with oncologic and hematologic disorders, she went on to complete a combined fellowship in Hematology and Oncology at the University of Mississippi Medical Center.  She is board certified in Internal Medicine and Medical Oncology.  Dr. Saul lives in Upper Arlington with her husband and two children.

Jennifer Seiler, C.N.P.

Jennifer Seiler is a graduate of the Mount Carmel College of Nursing and received her Master of Science in Nursing from Otterbein College.  She worked as a staff nurse in clinical oncology for 6 years prior to obtaining her certification as a Nurse Practitioner in 2006.  Her clinical experience includes work at The Mark H. Zangmeister Center, The Arthur G. James Cancer Hospital, and Vitality Natural Wellness.

Ms. Seiler is certified as both a Family Nurse Practitioner and Advanced Oncology Certified Nurse Practitioner.  She is a member of the Oncology Nursing Society, Ohio Academy of Advanced Practice Nurses, and the American Academy of Nurse Practitioners.

Ms. Seiler is very passionate about health and wellness and is also a certified personal trainer.  She lives in Upper Arlington with her husband, two children, and their Bernese mountain dog, Arthur.

Lauren Sockrider, C.N.P.

Lauren Sockrider CNPLauren Sockrider is a native of Westerville, Ohio. She completed her Bachelor of Science in Nursing at The Ohio State University in Columbus, Ohio. She earned her Master of Science in Nursing at Wright State University in Dayton, Ohio.

Lauren worked as a registered nurse in Pediatric Oncology at Nationwide Children’s Hospital prior to obtaining her Nurse Practitioner certification in 2009.

Ms. Sockrider is a Board-Certified Family Nurse Practitioner by ANCC and a member of the American Association of Nurse Practitioners and Oncology Nursing Society. Prior to joining Columbus Oncology Associates, Inc., Lauren worked as a nurse practitioner for over 6 years with Hematology Oncology Consultants, Inc. in Columbus, Ohio.  Additional clinical experience includes her work at CVS Minute Clinic, Integrated Pain Solutions, and Worthington Family Physicians.

Lauren resides in Westerville with her husband and three children.

Thomas J. Sweeney, M.D.

Dr. Thomas J. Sweeney is a native of Columbus. He graduated from the Ohio State University with a B.S. in Chemical Engineering and an M.S. in Chemistry. In 1992 he graduated from the Ohio State University College of Medicine with his M.D. He completed his Internship and Residency at the University of Michigan in Ann Arbor.

Dr. Sweeney completed his Fellowship in Medical Oncology at Stanford University in 1998. Dr. Sweeney is Board Certified in Medical Oncology.

Dr. Sweeney joined our group in the Summer of 1999 after he, his wife Rose and three children completed their move back to Ohio.

Choosing an Oncologist

Choosing the right oncologist is an important first step for any person who has received a cancer diagnosis, and a step that will inform, educate, and support individuals and their family members throughout the treatment process.

Insurance plans offer lists of in-network physicians for individuals to consider, however it is often very beneficial to speak to your primary care doctor, as well as friends and family, who can offer referrals to physicians in the area. You may also want to call your local hospital to ask for a list of doctors specializing in cancer care who practice at that hospital. Many online resources exist to help individuals locate oncologists in their area. The American Society of Clinical Oncology (ASCO), for example, hosts a searchable database that includes more than 30,000 oncologists, listing their affiliations, specialties, and contact information. The American Medical Association (AMA) also provides a database called DoctorFinder, allowing users to search for licensed physicians in the United States by name or medical specialty. Web-based searches, or looking at advertisements in the telephone book or yellow pages may also help you in locating doctors.

Once you have narrowed down a list of oncologists in your area, it is a good idea to call the offices of the physicians to confirm that they accept your specific insurance plan, as well as to make sure that they are accepting new patients. If you do not have insurance, or if you are covered under federal or state health insurance programs such as Medicare or Medicaid, you should consult with the doctor’s office to make sure they accept patients under these programs, or if they offer any reduced rates or services for people without medical insurance.

When it comes to selecting the oncologist for you, there are several considerations to keep in mind. First, does the oncologist have board certification, and do they specialize or have extensive experience in the relevant area of treatment? Also, does the doctor make an effort to stay up-to-date with his or her knowledge of recent innovations in cancer treatments? When you meet with the oncologist, do you feel he or she listens closely to you, addressing your concerns and allowing you to feel informed and respected? These are all important considerations, and you should ultimately choose a doctor that you feel assured is well qualified, as well as sympathetic and caring to your unique situation.

Many individuals seek second opinions, or choose to meet with several doctors until they find one who offers the support they need, and with whom they share a positive rapport. Remember that it is common to seek the advice of more than one medical professional, and you should feel comfortable asking questions of your doctor, and receiving care that is nothing less than compassionate, supportive, and personal to you and your loved ones.