Highlights
Age Groups Seen
- Adult
Languages
- English
Gender
MaleLocations
- Willoughby Hills Family Health Center, North Building
- 2550 Som Center Road, Willoughby Hills, OH 44094
- Get Directions
Education & Board Certifications
Education
- Fellowship: Memorial Sloan-Kettering Cancer Center, 1988
- Fellowship: University Hospitals of Cleveland, 1988
- Residency: Mt. Sinai Medical Center, 1984
- Internship: Mt. Sinai Medical Center, 1982
- Medical Education: Medical College of Ohio at Toledo, 1981
- Undergraduate: Kenyon College, 1974
Board Certifications
- Internal Medicine: American Board of Internal Medicine, 1984
Professional Highlights
- Board-certified in internal medicine
- Board-certified in medical oncology
Research & Publications
See publications for this provider. (Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)
Industry Relationships
Cleveland Clinic physicians and scientists collaborate with industry to advance medical breakthroughs. These partnerships help commercialize discoveries for public benefit while maintaining scientific integrity. To ensure transparency and minimize potential bias, Cleveland Clinic reviews these relationships and publicly discloses when physicians/scientists receive significant compensation for consulting, serve in fiduciary roles, receive royalties, or hold equity interests related to their work. We manage potential conflicts through approval processes, annual reporting, and targeted management plans.
As of 2026-04-13, Dr. Greenfield has reported no financial relationship with industry that is applicable to this listing.
In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.
Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.
* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.
Insurances Accepted
Video
Ratings & Reviews
4.8 out of 5
281 ratings, 52 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 5/8/2026
Excellent doctor. I have total confidence in him
- 5 out of 5 starsReviewed on 5/8/2026
I always have questions and Dr. Greenfield always answers in a good way so that I understand.
- 5 out of 5 starsReviewed on 5/8/2026
Incredible support staff and great Doctor. I''m very lucky to be their patient.
- 5 out of 5 starsReviewed on 5/4/2026
Dr. Greenfield is always thorough and does not rush through my appointment. I value his expertise and reassurance as I move through my cancer journey.
- 5 out of 5 starsReviewed on 4/27/2026
I appreciate that Dr Greenfield takes the time to answer my questions and is very easy to talk to.
- 5 out of 5 starsReviewed on 3/30/2026
Dr. Greenfield is absolutely wonderful. He listens, he is very reassuring. Dr. Greenfield takes time to explain all test results and answer all questions. HIghly recommend this fantastic physician.
- 5 out of 5 starsReviewed on 3/11/2026
Very knowledgeable and caring Doctor.
- 5 out of 5 starsReviewed on 3/6/2026
Dr. Greenfield has always provided simple to understand explanations of my medical condition. He is very prompt in returning calls and questions about my health
- 5 out of 5 starsReviewed on 3/6/2026
Dr. Greenfield is the best, most caring physician
- 5 out of 5 starsReviewed on 3/6/2026
Very very good and caring doctor
- 5 out of 5 starsReviewed on 3/3/2026
Dr Greenfield goes over test results very thoroughly in a easy to understand way.
- 5 out of 5 starsReviewed on 2/23/2026
Dr Greenfield is excellent at explaining what the plan is, how we implement the plan, what to expect. He Is always willing to answer questions. I never feel rushed and I always leave the office f knowing I''m in great place.
- 5 out of 5 starsReviewed on 2/10/2026
Dr. Greenfield is so knowledgeable and compassionate. I wouldn't trade him for anyone.
- 5 out of 5 starsReviewed on 1/26/2026
Dr. Greenfield and staff are always professional, friendly and kind.
- 5 out of 5 starsReviewed on 1/14/2026
I have recommended Dr. Greenfield to ppl. He is an excellent Oncologist. He is always friendly, encouraging, compassionate, caring & very knowledgeable. Any question I ask is treated as valid. I never feel rushed at a visit & feel I am regarded as a person, not a number. I appreciate that any time I have called his office with a question or concern, I receive a personal phone call from him. I regard him highly.
- 5 out of 5 starsReviewed on 1/9/2026
I've had care under Dr. Greenfield before.
- 5 out of 5 starsReviewed on 1/9/2026
Dr. Greenfield is a consummate professional that serves as a model and an icon of what every usual and customary medical practitioner should aspire to become.
- 5 out of 5 starsReviewed on 1/9/2026
Dr. Greenfield is great, I like him a lot.
- 5 out of 5 starsReviewed on 12/24/2025
Very informative and down to earth doctor.
- 5 out of 5 starsReviewed on 12/18/2025
Dr Greenfield always takes time with me and always asks if I have any questions or concerns.
- 5 out of 5 starsReviewed on 12/16/2025
Care from Dr. Greenfield has been very good.
- 4 out of 5 starsReviewed on 12/8/2025
Dr Greenfield was very professional and knowledgeable. All my concerns were addressed compassionately.
- 5 out of 5 starsReviewed on 12/8/2025
Dr. Greenfield cares and treats me with dignity and respect. He is prompt and takes time to explain and teach important treatment details. I trust my doctor and the care he provides.
- 5 out of 5 starsReviewed on 12/8/2025
Recommend doctor Greenfield all the time. He is the best physician I ever had! I have been with Dr. Greenfield since May 20, 1993! He is the only physician I truly respect and trust!
- 5 out of 5 starsReviewed on 11/19/2025
Dr Greenfield spends time and explains any issues clearly.
- 5 out of 5 starsReviewed on 11/4/2025
Dr. Aric G. Is a great doctor. Very knowledgeable. I trust him completely.
- 5 out of 5 starsReviewed on 11/4/2025
Dr. Greenfield is very personable and puts patients at ease. He takes time to listen to patients and provide appropriate care. He is good in following up with his patients.
- 5 out of 5 starsReviewed on 10/22/2025
Dr Greenfield listened to all my questions and concerns and explained in a non judgmental and non condescending way all the what's and whys. I felt confident that his recommendation matched the first opinion, that it was in my best interest to move forward with the recommendation.
- 5 out of 5 starsReviewed on 10/16/2025
Dr Greenfield always takes time to talk to me and he answers all my questions.
- 5 out of 5 starsReviewed on 10/7/2025
Doctor Greenfield always takes the time to understand any of my concerns and answers all my questions I am lucky to have picked a great doctor
- 5 out of 5 starsReviewed on 9/24/2025
Staff was very friendly and made me feel at ease while Yeah getting my vitals and records for doctor.
- 4 out of 5 starsReviewed on 9/11/2025
Hope I don't ever have to recommend this physician to anyone. Pleasant & knowledgeable. Also very busy!
- 5 out of 5 starsReviewed on 9/8/2025
I usually have a Female MD, or NP Dr Greenfield stopped any fears I had, talked about how he could do my care, 2 tubes of blood. I would recommend this Doctor to anyone who needs a Specialist. Kind and caring I walk with a walker and am 75 Years old I have had many MD's in my years. He ranks with top 5 MD
- 5 out of 5 starsReviewed on 8/4/2025
Dr Greenfield's presence and demeanor was kind and calming.
- 5 out of 5 starsReviewed on 8/4/2025
I am unsure what to think about the actual time I had face to face with my doctor. This was a six month follow up and I actually spent less than five minutes interacting with my doctor. For the amount of money I see that you charge my insurance company for this visit, I consider the charges extravagant compared to the actual minutes I was face to face with my physician.
- 5 out of 5 starsReviewed on 7/28/2025
Dr. Greenfield is always friendly and professional. He answers all my questions and does not ever rush my appointment. If he is backed up, he certainly doesn't make that apparent.
- 5 out of 5 starsReviewed on 7/28/2025
Dr. Greenfield always takes his time and answers all my questions
- 5 out of 5 starsReviewed on 7/28/2025
Dr. Greenfield is very good, called me to explain tests results, very nice when a Dr, will communicate with patient.
- 5 out of 5 starsReviewed on 7/22/2025
Everyone from the front desk, nursing and doctor were excellent
- 5 out of 5 starsReviewed on 7/22/2025
Very kind compassionate staff and doctor
- 5 out of 5 starsReviewed on 7/2/2025
Dr. Greenfield is awesome! Down to earth easily approachable, frendly and informative. If all doctors were like him it would be an awesome world to live in!
- 5 out of 5 starsReviewed on 6/26/2025
I have seen Dr. Greenfield for 10 years. The care has been excellent. He is quick to respond to questions messages and requests for refills. He is confident about the treatment he is providing that made me confident that I was getting the right care to recover. I would be happy to recommend him.
- 5 out of 5 starsReviewed on 6/26/2025
Dr. Greenfield is an amazing Oncologist. He is personable, caring, compassionate, understanding, encoraging...very easy to talk to. Always open to speaking/hearing about concerns & answering all questions. He is patient & takes whatever time us necessary for each appointmentm. Every appointment has been positive!
- 5 out of 5 starsReviewed on 6/23/2025
Doctor was very professional, caring, well informed on latest treatment options, and giving plenty of time for questions.
- 5 out of 5 starsReviewed on 6/23/2025
I think Dr. Greenfield is great!
- 5 out of 5 starsReviewed on 6/16/2025
Dr. Greenfield has been very attentive during my treatment and follow-up visits. We were able to discuss my future risks and the plan for continued follow-up.
- 5 out of 5 starsReviewed on 6/16/2025
Dr Greenfield is very calm and professional and answers any questions fully.
- 5 out of 5 starsReviewed on 6/9/2025
Dr. Greenfield is a very caring Doctor. Very personable.
- 5 out of 5 starsReviewed on 5/29/2025
Dr Greenfield makes me feel comfortable, is thorough and listens to my comments.
- 5 out of 5 starsReviewed on 5/22/2025
Dr. Greenfield and office are extremely professional and caring
- 5 out of 5 starsReviewed on 5/19/2025
Dr. Greenfield took the time to explain everything to me. He answered all my questions. He was very professional and made me feel comfortable considering my diagnosis. He put my fears at ease.
- 5 out of 5 starsReviewed on 5/19/2025
Dr Greenfield is very good at listening and explaining .