Dr. Ochuko Gregson Diamreyan

My husband has been a patient of Dr. D for 18 years and we are very pleased with doctor's professionalism, care, and compassion. My husband had been to other doctors before Dr. D and we have remained with doctor because of the care he has provided not only for my husband, but his genuine concern for how my husband's illness affects me and our daughter as well.

My sister called ahead of time that she is coming down. We are 5 minutes away. She calls about five times when we were outside and no answer. We were sitting out here for 30 minutes. But, when I call one time they answer. This is very bad

Really awful psychiatrist. I visited this doctor because I suspected I had ADHD. I explained my symptoms to the doctor and it felt like he didn’t believe me! He said maybe I do or do not have ADHD but that there needed to be documentation before he could prescribe me medication. He equated alcohol to ADHD meds and said that alcohol is legal because it makes money. Every time I went in for a refill, the wait times were ridiculous and the appointment was so rushed. It’s very obvious that this doctor doesn’t care about his patients and is only in it for the money.

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This man does not show up early for his appointment. For example, if you have an 8 am appointment 8 other people will also have that slot and he does not show up until 9 which in my opinion is highly unprofessional. Everything is done by hand. This is 2020 why he does not do anything electronically is beyond me. He only works I think 3 times a week so getting an appointment is hard even when you are a patient. I had to cancel one appointment due to a work meeting. Due to this, I was going to run out of my medication two days before I saw him. Since he is never in the office since he works 3 days, I was not able to get a refill before that. This has never been an issue at other places for me. They just don't care either. I've gone to a lot of psychiatrists and this has been by far my worst experience.

I rarely write reviews but I received outstanding service from Dr. Diamreyan so I felt I needed to. He absolutely deserves 5 stars for the service he provides to the community. Great listener, ready to help with anything you need and resolve any problem. Available both in San Bernardino and Rancho Cucamonga. His office also very helpful and organized. Thank you Dr. Diamreyan for your hard work! I rarely write reviews but I received outstanding service from Dr. Diamreyan so I felt I needed to. He absolutely deserves 5 stars for the service he provides to the community. Great listener, ready to help with anything you need and … More

My doc is the best... I thank him every day ! I recommend him... He listens... He hears you. I give thanks Dr. Diamreyan

I would never recommend this Dr to anyone. He only in it for himself and makes uneducated desisions. Does not care about the patient.

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Long long long long long waits, short short short time with Dr. The entire atmosphere and conversation was odd. Tried a few times but not professional enough at all.

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He didn't seem to care and it felt like he was just waiting for me to leave already. The only question he really seemed to care about was whether I needed the medication or not. When I told him I wasn't sure, he said okay it doesn't look like you need it, what else do you want? The whole evaluation was less than 10 minutes with him mostly saying well what do you want from me? Every other doctor I've been to has been able to calmly talk to me and explain things where I feel comfortable opening up, but with him I felt anxious and the more a stuttered with my words the more annoyed he seemed to get. Overall it was a disappointing experience and wouldn't recommend it to anyone especially if it is your first time, lest you think all doctors are the same way. He didn't seem to care and it felt like he was just waiting for me to leave already. The only question he really seemed to care about was whether I needed the medication or not. When I told him I wasn't sure, he said okay it doesn't look … More

Great physician and staff. Fast service. Independent and great clinical skills. A real listener. Able to figure out the patient's particular medical needs, and provide medication and treatment as required. US physicians are becoming constrained by outside forces (insurance companies and medical boards) forcing them to practice "guideline" based medicine and "cookbook" care plans. Often, "organized medicine" does not meet the needs of every patient, and physicians like Dr Diamreyan are becoming more valuable as time goes by. Great physician and staff. Fast service. Independent and great clinical skills. A real listener. Able to figure out the patient's particular medical needs, and provide medication and treatment as required. US physicians are becoming … More

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He didn't feel welcoming, seemed to be in a rush and didn't really ask me questions but wanted me to diagnose myself instead whether I needed medication or not.

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Been with Dr D since he had an office in Hesperia, 12 years total. I have nothing but respect for this doctor; he's helped me and my family through my mental health issues. Very compassionate and trustworthy.

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This doctor isn't in the business to help people. He's just there to bleed your insurance dry. Expect to wait for 30+ minutes past your appointment to be seen for less than 5.

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