Clinical Fellowship
- Hematology-Oncology, Emory University School of Medicine
Internship and Residency
- Internal Medicine, Emory University School of Medicine
Medical School
- MCP Hahnemann School of Medicine, Philadelphia, Pennsylvania

Dr. William Jonas is an experienced oncologist and hematologist at Piedmont Cancer Institute and is the former President of the medical staff at Piedmont Hospital. He treats patients with all cancer types given his extensive experience in oncology and hematology.
Awesome 1st time visit. Dr Jonas & staff were all friendly & kind. Special thanks to Krystal & Scott whom I saw 1st & 2nd, before seeing Dr. Jonas, they both took the time to make me feel comfortable & safe. Dr. Jonas was great, he explained my issue & answered all of my questions with such clarity. Thanks to Nicole in lab, you made it painless :)
Dr Jonas is always pleasant, unhurried and always pays close attention to details. The teleheath visit went well, was efficient and very convenient. I live two hours away so doing a telehealth visit saves me a lot of time and I can avoid the aggravation of having to deal with the Atlanta traffic.
Dr. Jonas is amazing. I have been under his care and observation for almost 4 years now. He is definitely an advocate for his patients. He ensures that his patients are heard, understood and considered in every step of treatment. I enjoy his personality. He lights up a room and makes sure that you understand that if you need him, he is there. I appreciate his bedside manner and am so happy that he is part of my healthcare team. Also, his PA, Allison is incredible. From check-in to bloodwork, it is quite seamless. I would recommend Dr. Jonas if you need a doctor who is knowledge, compassionate, kind and ready to do what he can for you to achieve the best possible outcome.
Nothing I can add to my previous recommendations. Dr. Jonas personally, and his team a pleasure to visit monthly in all ways. Best bedside manner of any medical professional I have had in my 84 years on this earth.
I've been a patient of Dr. Jonas for fifteen and a half years and I'm so thankful I was referred to him. He is a very knowledgeable, informative, thorough, kind, caring, and patient physician who has, and expresses, a lot of concern for his patients. Scheduling, and rescheduling appointments has been very good. His staff, that I've come in contact with, all have the same professional, cheerful, and kind attitude as he has. He has always come into the room with a cheerful and happy mood. I feel confident with the information he gives about my health; and the suggestions, instructions, recommendations, he gives me. There has never been a question or concern that I've had that he didn't take the time to answer; and always in a way that was easily understood. I've never regretted going to an appointment with him, and I know I can trust him to tell me the truth about any concerns or questions I have and about any health issues or about any concerns he has. He has always given excellent service and I would definitely recommend him to others.
I think Dr Jonas is absolutely an amazing oncologist. He is so on top on my case and what's going on with me. He takes time with me and lets me ask questions and he takes time to listen. I just love him and so thankful for him and all he has done for me.
Dr. Jonas is very patient, and he is always pleasant. He tries to truly treat the source of an issue, and I really appreciate him for this. I will continue to recommend him to others. Thank you, Dr. Jonas!
This was my first appointment. I was welcomed well. Everyone was very professional. The PA came in first, to go over my health. Very nice young lady. Dr. Jonas came in next, he's a very nice person as well, he's also funny. Overall, I do believe that he is a fantastic Dr. that has a great wealth of knowledge and beyond to care for his patients. Attention, knowledge and caring will go a long way. Thank U! Both
Dr Jonas showed a lot of care and concern at a time when we were worried about my prognosis. His calm and confident demeanor was comforting and I couldn't recommend him enough. His office staff is top notch and they were very helpful (thank you Tracey) over a hectic holiday time. Overall, Dr Jonas possesses everything I think about when looking for a healthcare professional. He is exceptionally professional and is blessed with a quick warm sense of humor at a time when it's needed most. I pray Gods blessing on him/family, his many patients and his staff.
Piedmont Cancer Institute is an exceptional organization for the treatment of cancer. Working with the doctors and staff is an important part of the healing process. Dr. Jonas is expert in his craft and has been strength and comfort in my journey. I respect Dr. Jonas and gladly would refer his services at Piedmont Cancer Institute.
I came to Dr. Jonas for a second opinion. I have stage 3 colon cancer, and I wanted his recommendation for post op treatment. I found him to be very approachable, and easy to understand. He impressed me as genuinely caring, vastly experienced, and very professional. He quickly established trust, and if I was located near his office, he would be my first choice for treatment. I also found his staff to be helpful and knowledgeable.
Timely, courteous, professional. Of all the many patients Dr. Jonas sees he makes you feel that he knows you personally. Thank God for Dr. Jonas' skilled hands and care to treat those many in need. Cancer is a beast and Jonas is a slayer for health. The world needs more like Dr. Jonas!
Dr Jonas immediately had me convinced we would get along. He made me feel at ease. Wonderful sense of humor and serious when he need be.
Dr. Jonas is very pleasant, courteous, thorough and caring. He listens and answers questions and it's easy to talk to him about concerns. His staff is courteous also.
William S. Jonas, MD sees patients at the following PCI offices.
1800 Howell Mill Rd, Suite 800, Atlanta, GA 30318
Providing the highest quality cancer treatment services close to home.