logo for print
ATLANTA: 1800 Howell Mill Rd • Suite 800 • Atlanta, GA 30318 • 404-350-9853
FAYETTEVILLE: 1267 Highway 54 West • Suite 4200 • Fayetteville, GA 30214 • 678-829-1060
LOCUST GROVE: 4877 Bill Gardner Pkwy • Locust Grove, GA 30248 • 678-399-7190
NEWNAN: 775 Poplar Rd. • Suite 310 • Newnan, GA 30265 • 770-251-2590
SANDY SPRINGS: 755 Mount Vernon Hwy NE • Suite 320 • Atlanta, GA 30328 • 404-350-8711
STOCKBRIDGE: 290 Country Club Drive • Suite 100 • Stockbridge, GA 30281 • 678-854-9500

Meet William S. Jonas, MD

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.

Professional Affiliations

Publications & Contributions

  • Georgia Comprehensive Sickle Cell Center at Grady Health System Award of Appreciation
  • Translation of Innovative Designs into Phase I Trials. Journal of Clinical Oncology
  • Cancer: Principles and Practice of Oncology Review
  • The promise of immunotherapy in prostate cancer: From concept to reality
  • A Multidisciplinary Care Management Program for Patients with Sickle Cell Syndromes Significantly Reduces Health Care Resource Utilization

Appointments & Presentations

  • Past President of Medical Staff - Piedmont Hospital
  • Past Chair, Department of Medicine - Piedmont Hospital
  • Past Presenter - American Society of Hematology

Testimonials from Dr. Jonas's Patients

March 2026

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 :)

March 2026

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.

March 2026

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.

March 2026

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.

March 2026

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.

March 2026

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.

January 2026

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!

January 2026

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

January 2026

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.

December 2025

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.

December 2025

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.

December 2025

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!

December 2025

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.

December 2025

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.

December 2025

Dr. Jonas is a great doctor with a wonderful bedside manner!!!

View Testimonials About PCI

Office Locations

William S. Jonas, MD sees patients at the following PCI offices.

The Atlanta office of Piedmont Cancer Institute | Atlanta Oncologists

Atlanta

1800 Howell Mill Rd, Suite 800, Atlanta, GA 30318

404-350-9853

Map & Directions

Seven Atlanta Area Locations

Providing the highest quality cancer treatment services close to home.

WebMD Preferred Provider Castle Connolly Top Physician Practices GASCO Lifetime Group Member Georgia Trend Top Doctors Atlanta Magazine Top Doctors 2024 Atlanta Magazine Top Doctors 2023 Best of Perimeter 2023 Best of North Atlanta 2025 Best of North Atlanta 2024 Atlanta's Best 2023 Kev's Best