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
267 ratings, 44 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 8/10/2026
Dr Greenfield is exceptional and I have total faith in him
- 5 out of 5 starsReviewed on 7/30/2026
Dr. Greenfield and Christine have what''s going on of their way to make me comfortable during this trying time?I love those two, along with the nurses and an oncology
- 4 out of 5 starsReviewed on 7/30/2026
Again, I must reiterate That the referring doctor and the doctor that I saw should have had a discussion or at the very least provided information of my history over the years in my chart and concluded that there is no concern with regards to my white blood count, Which would''ve meant no need to make an appointment and spend thousands of dollars for 10 minutes
- 5 out of 5 starsReviewed on 7/20/2026
Dr. Greenfield is always professional and takes time to have an actual conversation with me. I appreciate that.
- 5 out of 5 starsReviewed on 7/20/2026
Thank you love visiting him every 3 months
- 2 out of 5 starsReviewed on 7/1/2026
My father asked Dr.Greenfield what the medication, abiraterone was for. His answer was so you can live longer. He did not take the time to explain what the medication actually does.
- 5 out of 5 starsReviewed on 7/1/2026
Dr. Greenfield is great!
- 5 out of 5 starsReviewed on 6/19/2026
Dr. Aric Greenfield is one of of Cleveland Clinic''s best doctors
- 5 out of 5 starsReviewed on 6/11/2026
Dr Greenfield has been really great to work with. He''s so knowledgeable and explains things very well - such as blood work results - which ones really matter, and what I can do to improve my results. Also, what low numbers might be an indicator of. Very helpful at telling me what I do and do not need to be concerned with. I would HIGHLY recommend him!
- 1 out of 5 starsReviewed on 5/20/2026
I all good excluding heart of Dr Greenfield. He does not rise upto the level of medical profession or status of Cleveland Clinic,
- 5 out of 5 starsReviewed on 5/20/2026
Dr. Greenfield is always attentive and takes his time with my questions and concerns.
- 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 5/8/2026
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
Excellent doctor. I have total confidence in him
- 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
Very very good and caring doctor
- 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
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 3/3/2026
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
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 1/9/2026
I've had care under Dr. Greenfield before.
- 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.
- 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!
- 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 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