Highlights
Age Groups Seen
- Adult
Languages
- English
Gender
MaleLocations
- Q Building - Glickman Tower
- 2050 East 96th Street, Cleveland, OH 44106
- Get Directions
- Q Building - Glickman Tower
- 2050 East 96th Street, Cleveland, OH 44106
- Get Directions
Education & Board Certifications
Education
- Fellowship: Memorial Sloan Kettering Cancer Center (New York), 2020
- Residency: Cleveland Clinic, 2018
- Internship: Cleveland Clinic, 2013
- Medical Education: Medical College of Wisconsin, 2012
- Undergraduate: University of Wisconsin, 2006
Board Certifications
- Urology: American Board of Urology, 2022
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 2026-03-21, Dr. Almassi 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
4.9 out of 5
669 ratings, 122 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 4/8/2026
Dr. Almassi has been the best doctor I have ever had at any hospital or medical practice. He not only possesses great skill as a surgeon, but more importantly he displays a sense of humanity in his interactions with his patients. He has literally saved my life and I will be forever grateful to him.
- 5 out of 5 starsReviewed on 4/3/2026
Dr Alma''s was very warm, and took time to explain everything. He seemed so patient friendly. He answered all of our questions, inspired confidence. Our time with him was time well spent.
- 5 out of 5 starsReviewed on 4/3/2026
It was almost 3 months from when I completed the online firm in December to start seeing Dr. Nima Almassi after Dr. Sam Haywood left the Cleveland Clinic.
- 5 out of 5 starsReviewed on 4/3/2026
This was a highly informative visit. Dr. Almassi reallly took the time to answer all of our questions and gave us some great feedback and answers to those questions.
- 5 out of 5 starsReviewed on 3/26/2026
Dr Almassi is a very caring doctor. He had so much patience when I had trouble with the camera. So lucky to have him as a doctor.
- 5 out of 5 starsReviewed on 3/26/2026
DR. ALMASSI AND HIS STAFF ARE GREAT. TREAT YOU LIKE A PERSON AND NOT A NUMBER. DR. ALMASSI SAVED MY LIFE. HOW CAN YOU PUT A PRICE ON THAT?
- 5 out of 5 starsReviewed on 3/20/2026
Dr. Almassi has not only got my respect and thankfulness as a surgeon but as a caring person during interactive follow-up visits.
- 5 out of 5 starsReviewed on 3/20/2026
Dr Almassi and nurse assistant were terrific
- 5 out of 5 starsReviewed on 3/20/2026
Great doc and staff. Efficient, humane, smart, good humored.
- 5 out of 5 starsReviewed on 3/20/2026
I could not ask for a better doctor than Dr. Almassi! Am extremely grateful I was referred to him. He is an extraordinary doctor.
- 5 out of 5 starsReviewed on 3/11/2026
I only wish Dr Almassi could be my Care Provider for all of my medical issues. He is wonderful.
- 5 out of 5 starsReviewed on 3/4/2026
Both the PA, Tracy, and Dr. Almassi were professional, understanding and made me feel much better than when I entered the Clinic.
- 5 out of 5 starsReviewed on 3/4/2026
Top notch providers
- 5 out of 5 starsReviewed on 3/4/2026
Dr. Almassi listened to my questions and concerns
- 5 out of 5 starsReviewed on 3/4/2026
I love my experience with Cleveland and Dr. Almassi.
- 5 out of 5 starsReviewed on 3/4/2026
Dr Almassi is great! Very efficient, Professional, courteous, and friendly.
- 5 out of 5 starsReviewed on 2/25/2026
Dr. Almassi answered all questions in a very comforting & complete manner.
- 5 out of 5 starsReviewed on 2/25/2026
Great appointment. Dr Allmassi answered all my questions clearly and did not rush me. I have so much confidence in him and he is very kind.
- 5 out of 5 starsReviewed on 2/25/2026
I have previously recommended Dr. Almassi to a colleague and an acquaintance resulting in surgeries for each patient. They each hold Dr. Almassi and is team in the highest regard.
- 5 out of 5 starsReviewed on 2/18/2026
Dr is always so gentle, kind a listener
- 5 out of 5 starsReviewed on 2/18/2026
Dr. Almassi continues to impress me with his care, concern for my health and well being.
- 5 out of 5 starsReviewed on 2/18/2026
Dr. Almassi is an amazing Doctor and Surgeon... I am lucky to have him as my provider
- 5 out of 5 starsReviewed on 2/18/2026
Doc and his PA both were interested in me personally as well as my medical history.They took the time to hear my history and concerns.Both very respectful, upbeat and positive.
- 5 out of 5 starsReviewed on 2/11/2026
Dr. Almassi explained test results clearly, thoroughly, honestly, and with great caring. I left feeling that I am in very good hands.
- 5 out of 5 starsReviewed on 2/5/2026
Dr. Almassi always takes the time to explain everything and I never feel rushed.
- 5 out of 5 starsReviewed on 2/5/2026
Dr Almassi and his staff are great . I have been dealing with them for 3 yrs and always take great care of me .
- 5 out of 5 starsReviewed on 2/5/2026
Dr. Almassi explained my results in detail in terms that were clear. I had the opportunity to ask questions and he answered my concerns. Plans for my future care were not only discussed but immediately implemented. I know this physician views health as a top priority.
- 5 out of 5 starsReviewed on 2/5/2026
Dr. Almassi answered all of our questions completely , was always positive and supportive.
- 5 out of 5 starsReviewed on 2/5/2026
Dr. Almassi is one of the best physicians that I've had the opportunity to speak with. He provided clear guidance to me regarding my condition. I trust his judgement without reservation!
- 5 out of 5 starsReviewed on 1/28/2026
Dr. Almassi is an excellent doctor. He explains all possible procedures in detail and very personable!
- 5 out of 5 starsReviewed on 1/28/2026
Dr Alamissi is excellent
- 5 out of 5 starsReviewed on 1/23/2026
Very excellent experience I am so grateful to be Dr Almassi's patient!
- 5 out of 5 starsReviewed on 1/23/2026
I have doctor Almassi many times and he is one of the best
- 5 out of 5 starsReviewed on 1/7/2026
I had a favorable conversation with my doctor.
- 5 out of 5 starsReviewed on 1/7/2026
Dr. Almassi took time to answer my questions and address my concerns. My visit could not have gone better!
- 5 out of 5 starsReviewed on 1/7/2026
Dr. Almassi is a excellent caring doctor.
- 5 out of 5 starsReviewed on 1/7/2026
Recommended that my husband seek care from Dr. Almassi.
- 5 out of 5 starsReviewed on 12/24/2025
Dr.Almasi is the best. Treatment has been effective and I trust what he tells me.
- 5 out of 5 starsReviewed on 12/24/2025
My experience with Dr. Almassi, and his team is the best! The best surgeon that you can ask for Dr. Almassi did my surgery, and he did amazing job. I was fortunate to have Dr. Almassi, Cleveland Clinic, it is very lucky to have him. He is the best.
- 5 out of 5 starsReviewed on 12/18/2025
Excellent video visit, wonderful care provided by the doctor. Looking forward to our next appointment
- 5 out of 5 starsReviewed on 12/4/2025
My first appointment with Cleveland Clinic was a perfect experience. EVERYONE throughout the process were kind and helpful. The Doc was no-nonsense, direct and friendly. GREAT people skills and efficient. He spoke in clear terminology and made sure I understood the information he was delivering. A++++ on all levels
- 5 out of 5 starsReviewed on 11/19/2025
I was given an option for follow up care with a nurse practitioner at a facility closer to home. The NP works closely with Dr. Almassi and will address any concerns with him in future encounters.
- 5 out of 5 starsReviewed on 11/13/2025
My experience at the Clinic, and with Dr. Almassi and his staff has been exemplary.
- 5 out of 5 starsReviewed on 11/13/2025
Dr. Almassi is outstanding
- 5 out of 5 starsReviewed on 11/13/2025
Dr Almassi is outstanding
- 5 out of 5 starsReviewed on 11/6/2025
Dr Nima Al Massey treated me respectfully and with dignity! I felt he cared for me like I was relative or his father
- 5 out of 5 starsReviewed on 10/29/2025
Dr Almassi is the absolute best
- 5 out of 5 starsReviewed on 10/29/2025
I knew Dr. Almassi was the right doctor for me after seeing him online. I felt an instant connection to him.
- 5 out of 5 starsReviewed on 10/29/2025
Dr. Almassi is great. He takes the time to thoroughly answer all of my questions.
- 5 out of 5 starsReviewed on 10/29/2025
Having a video visit with Dr. Almassi was very convenient. It was easy to set up the appointment and the video connection was clear.
- 5 out of 5 starsReviewed on 10/22/2025
The Dr spent an adequate amount of time with me listening to me and explaining things
- 5 out of 5 starsReviewed on 10/22/2025
Dr. Almassi was very respectful. I am grateful that he is my physician looking over my health issues.
- 5 out of 5 starsReviewed on 10/22/2025
I liked Dr Almassi , as he listened to my concerns with him being my new urologist. . I felt very much at ease .
- 5 out of 5 starsReviewed on 10/22/2025
Dr Almassis practice is great. Most improvement is associated with the overall Cleveland Clinic itself
- 5 out of 5 starsReviewed on 10/22/2025
Dr. Almassi and his nurse practitioner were very professional and answered all my questions.
- 5 out of 5 starsReviewed on 10/16/2025
I consider myself lucky to have been treated by Dr. Almassi and his team. They were fantastic.
- 5 out of 5 starsReviewed on 10/16/2025
Dr. Almassi is great!!!
- 5 out of 5 starsReviewed on 10/16/2025
Dr. Nima Almassi and his team were fantastic - would definitely recommend.
- 5 out of 5 starsReviewed on 10/8/2025
Zoom did not work; I ended having a phone conversation with Dr Almassi
- 5 out of 5 starsReviewed on 10/7/2025
My Doctor was very professional and took the time to explain everything to me and answer my questions.
- 5 out of 5 starsReviewed on 10/7/2025
Dr. Almassi is excellent
- 5 out of 5 starsReviewed on 10/7/2025
I love dr almassi kind respectful patient explains everything
- 5 out of 5 starsReviewed on 10/7/2025
Love the doctor he is the best! And the staff is awesome
- 5 out of 5 starsReviewed on 10/6/2025
I always have the best care with my Doctor
- 5 out of 5 starsReviewed on 9/24/2025
My scope showed no cancer. Yet the doctor explained the continued risk and let me choose the frequency of follow up.
- 5 out of 5 starsReviewed on 9/24/2025
Dr Alma's has a very caring presence. He listens well and is very through.
- 5 out of 5 starsReviewed on 9/17/2025
Dr. Almassi was very knowledable about my Prostate Cancer. I came away a feeling that I was in good hands. He's a super nice guy too
- 5 out of 5 starsReviewed on 9/17/2025
I arrived early and was processed ahead of schedule. Had a very thorough review with the doctor.
- 5 out of 5 starsReviewed on 9/17/2025
I came to see this Doctor because I no longer felt confident in my care! From the moment this physician walked in the office and shook our hands I knew I made the right choice! I am very happy with the direction he is going in my care!
- 5 out of 5 starsReviewed on 9/10/2025
Dr. Almassi has been fantastic!Always taking time to make me feel comfortable and at ease. Ready to listen and answer to any questions that I have.
- 5 out of 5 starsReviewed on 9/10/2025
Most importantly, Most Importantly, Dr. Almassi makes me feel cared for In addition to being well cared for.
- 5 out of 5 starsReviewed on 9/5/2025
She was great lucky to have her
- 5 out of 5 starsReviewed on 8/20/2025
EXCELLENT Physician And He Smiles
- 5 out of 5 starsReviewed on 8/20/2025
They got me in surgery schedule in a reasonable amount of time, but not as soon as doc suggested
- 5 out of 5 starsReviewed on 8/20/2025
I received bad news from doc - I've become accustomed to possibility of such, but showed little or no emotion - doctor made gesture of genuine compassion for my condition
- 5 out of 5 starsReviewed on 8/18/2025
Dr Almassi is very calm and explains everything clearly.
- 5 out of 5 starsReviewed on 8/18/2025
Dr Almassi provides excellent care. He listens intently to what I say, and includes me in decisions about treatment and future care.
- 5 out of 5 starsReviewed on 8/11/2025
Dr is professional and extremely professional. In good hands
- 5 out of 5 starsReviewed on 7/30/2025
Dr Almassi is a great surgeon
- 5 out of 5 starsReviewed on 7/28/2025
My experience with Dr. Almassi and his staff was of the highest quality, very much indicative of the exemplary reputation for which the Cleveland Clinic Is known. A great experience, thank you.
- 5 out of 5 starsReviewed on 7/28/2025
The Dr was patient and answered all questions . . He shared advise
- 5 out of 5 starsReviewed on 7/28/2025
It was very good to here Dr. Almassy and his assistant talk about my problems and hoe WE were going to resolve them
- 5 out of 5 starsReviewed on 7/28/2025
Dr Almassi is wonderful. He has a way of making you feel everything is going to be ok. I need that right now.
- 5 out of 5 starsReviewed on 7/28/2025
Dr. Almassi, my provider, was superb in his interactions with me, both before and after the procedure.
- 5 out of 5 starsReviewed on 7/21/2025
Dr. Almassi sets the benchmark to ensure he listens and understands questions posed and provides thorough answers.
- 5 out of 5 starsReviewed on 7/21/2025
Dr. Almassi has been absolutely superb In all aspects of his management of my care. He is compassionate, knowledgeable, and responsive to all my needs. I can't say enough good about him. He has helped me so much over the past year.
- 5 out of 5 starsReviewed on 7/17/2025
Dr Almassi has great bedside manner, and did a superb job discussing my ongoing treatment options and addressing my concerns and preferences.
- 5 out of 5 starsReviewed on 7/17/2025
Yes I recommend Dr Almassi he was very helpful explaining everything I felt comfortable with him and trust him as doctor for my health problem
- 5 out of 5 starsReviewed on 7/17/2025
Dr Almasi was very caring and pleased that he was able to help me--I am so grateful
- 5 out of 5 starsReviewed on 7/17/2025
Dr Almassi and his team are great. Took his time to explain the procedure and the findings.
- 5 out of 5 starsReviewed on 7/17/2025
Dr Almassi is very professional and straight to the point.
- 5 out of 5 starsReviewed on 7/9/2025
Dr Almassi and his staff are wonderful.
- 5 out of 5 starsReviewed on 7/9/2025
Dr. Almassi is not only an outstanding doctor and surgeon, but is incredibly humble and thorough in all aspects of patient history and care. He ensures we never leave with unanswered questions or concerns and goes above and beyond the level of care you would typically expect.
- 5 out of 5 starsReviewed on 7/9/2025
Dr Almassi make sure I understand what he is saying. He has patience with me
- 5 out of 5 starsReviewed on 7/2/2025
Dr Nizam is an amazing professional, I am so lucky to have her as a doctor.
- 5 out of 5 starsReviewed on 7/2/2025
The doctor took Time to answer all my questions very thoroughly showed me the scans and explained tthem. Explained the procedure and assured me that he was going to do his very best to make it work. The friend that accompanied me on my appointment said later that she would go to that doctor if she ever needed him
- 5 out of 5 starsReviewed on 6/26/2025
Excellent interaction with Dr. Almassi . . . No complaints or concerns.
- 5 out of 5 starsReviewed on 6/26/2025
Issues regarding use of ehealth were on my end . . . . Dr. Almassi was very patient and completed the interaction via a work around.
- 5 out of 5 starsReviewed on 6/18/2025
Dr Almasi was impressive showing care for my concerns and provided a broad range of options for my care with a risk profile for each.
- 5 out of 5 starsReviewed on 6/13/2025
Dr Almassi is a caring thoughtful doctor.
- 5 out of 5 starsReviewed on 6/6/2025
Dr. Was very informed about the case before we spoke with him. He was kind and very knowledgeable about prostate Cancer. He caught mistakes made with previous medical procedures and previous Drs. We feel he is the best.
- 5 out of 5 starsReviewed on 6/6/2025
Dr Almassi is always respectful to me.
- 5 out of 5 starsReviewed on 5/28/2025
Excellent experience with my visit with Dr. Almassi and his team. Very professional, courteous, and knowledgeable in their subject matter but also with interacting with patients. This was my first time there and they made me feel very comfortable.
- 5 out of 5 starsReviewed on 5/21/2025
I was very happy with Dr. Almassi and his team
- 5 out of 5 starsReviewed on 5/21/2025
Dr Alsammi team was excellent
- 5 out of 5 starsReviewed on 5/21/2025
Dr Almassi was very kind and answered all my questions
- 5 out of 5 starsReviewed on 5/21/2025
He was excellent. He is a great doctor and I can't say enough good things about him.
- 5 out of 5 starsReviewed on 5/14/2025
Excellent explanation of my disease. Clear and concise explanation for treatment. Dr. Almassi Is professional , personable and caring. Perfect attention to details.
- 5 out of 5 starsReviewed on 5/14/2025
Dr. Almassi explained everything very well. Even requesting, staff to include me in a medical research test/trial.
- 5 out of 5 starsReviewed on 5/14/2025
Dr Almasdi seemed confident that he could help me
- 5 out of 5 starsReviewed on 5/14/2025
Dr Almassi is amazing compassionate doctor.
- 5 out of 5 starsReviewed on 5/14/2025
I would very much like to meet personally with Dr. Almassi , but because of my age and the fact that I live two hours away the video visit works better for me.
- 5 out of 5 starsReviewed on 5/14/2025
Dr. Almassi is an excellent doctor and a fantastic person. I could not have had a better doctor !
- 5 out of 5 starsReviewed on 5/7/2025
Dr Almassi has always been a receptive, responsive dr
- 5 out of 5 starsReviewed on 5/7/2025
Dr. Almassi is a wonderful doctor who is caring, professional, and knowledgeable regarding my health care issues.
- 5 out of 5 starsReviewed on 5/7/2025
Dr. Almassi was outstanding. Very knowledgeable. Went over treatment options. And worked with me to make an informed decision regarding deciding on Active Surveillance
- 5 out of 5 starsReviewed on 5/7/2025
Have always felt completely confident in dr almassi's whole team. Incredible!!
- 5 out of 5 starsReviewed on 5/7/2025
I have decided to travel the 6 hours yearly to The Cleveland Clinic to see Dr. Almassi as the primary doctor in monitoring my condition.
- 5 out of 5 starsReviewed on 5/2/2025
Dr. Almassi is great. He is my third urological/oncologist in 12 years. I hope he stays at the Clinic for a long time. He's a keeper.
- 5 out of 5 starsReviewed on 5/2/2025
Dr Almassi, Jordan and Nicole are truly the best!!!! True Assets to the Cleveland Clinic!!!!!!
- 5 out of 5 starsReviewed on 4/24/2025
Dr Almassi is very caring and takes time for questions and truly listens. He provides all options of treatment and takes our needs into consideration.
- 5 out of 5 starsReviewed on 4/24/2025
Doctor and staff is very attentive to needs and answering questions. Little to no wait times for appointments.