Richard T. Maziarz MD

Photo of Richard T. Maziarz, MD
Faculty profile

Professor of Medicine School of Medicine

Accepting new patients

4.9 out of 5 (198 Ratings, 53 Comments)


  • Cancer

Special focus on

  • Bone Marrow Transplant
  • Immunology
  • Leukemia
  • Lymphoma
  • Myeloma


  • M.D., Harvard Medical School, 0 0 1979
  • Residency:

    • University Hospitals of Cleveland, 1981
  • Fellowship:

    • Immunology, Dana-Farber Cancer Institute, 1985
  • Certifications:

    • American Board of Internal Medicine (internal medicine), 1982


Dr. Maziarz specializes in treating bone marrow transplantation and blood cancers. His research interests cover how the immune system recovers after a bone marrow transplant and how the immune system works to fight cancer. Dr. Maziarz sees patients with leukemia, lymphoma and graft vs. host disease and patients who are being treated with immune system therapies.


  • English

Memberships and associations

  • American Society of Hematology

Patient Ratings

4.9 out of 5 (198 Ratings, 53 Comments)

The patient ratings score is an average of all responses to the question "How likely would you be to recommend this provider to your family and friends (on a scale of 0 to 10)" on our nationally-recognized NRC patient surveys.

Patient Comments

  • Jun 05, 2019

    He was very informative about the process I will undergo for a stem cell transplant.

  • May 18, 2019

    Dr. Maziarz is simply the best doctors that I've ever, ever had. I think he saved my life, so you can't get better than that. A great doctor.

  • May 16, 2019

    Everyone was friendly

  • May 16, 2019

    My appt was at 4:10 and didn’t see doc till 5:30. Wait too long.

  • May 16, 2019

    Very knowledgeable , pleasant , great communications and spends time explaining and asking questions.

  • May 02, 2019

    My visit was very satisfactory, the staff, nurses and doctor were all very helpful and courteous especially in light of their just having moved to their new location.

  • Apr 26, 2019

    The doctor was very thorough and easy to understand with explanations on what could and can take place, staff was very kind and we (myself and family) felt very comfortable and confident.

  • Apr 25, 2019

    I have had 5 hematologists over my 23 year experience with OHSU at Hemonc and CHM, and I have been with Dr. Maziarz for about 10+ years. He is by far my favorite personally and professionally, as I am fluent in medical-ess/technical-ese and can assess that aspect of my healthcare providers.

  • Apr 20, 2019

    Of the Santa.....Dr. Maziarz was an awesome guy and great doctor and thank you very much.

  • Mar 24, 2019

    Dr. Maziarz was an excellent provider and had a good bed side manner.

  • Mar 23, 2019

    Dr. Maziarz is very knowledgeable/attentive and a good listener. I feel like I am making progress under his leadership. The prescription he recommended had to be formulated (not available through Costco) and was delayed until early next week. Hopefully it will be available soon. [Name]

  • Mar 23, 2019

    Very informative.

  • Mar 22, 2019

    Dr Maziarz is a wonderful Doctor and I'm so Thankful that I'm in his care.

  • Mar 22, 2019

    The doctor is very helpful and takes all the time we need to explain what my options are and what my test results are indicating.

  • Mar 12, 2019

    Dr. Maziarz was amazing! He reviewed my case and asked lots of questions. He then explained his transplant program throughly and in terms that were easily understood. He took time to answer each of our questions and stressed the importance of choosing the transplant program that best fits our needs.

  • Mar 08, 2019

    Dr. Maziarz is obviously one of the top doctors in his field of medicine and is a wonderful doctor. He has an ability to give the information that is needed in an understandable way. He still cares about the patient with the disease. I am so grateful he is my doctor.

  • Mar 06, 2019

    Well, my wife and I find that Dr. Maziarz is an amazing physician and answers all questions, is very engaging. Has handled everything so far superlatively and we are very much satisfied with his taking care of my transplant and the proceedings that came afterward. The visits have been very important in keeping us informed and giving us a lot of hope. So he's just a marvelous physician, we thank him so much for all his help. Thank you so much.

  • Jan 27, 2019

    We find that Dr. Maziarz is... very knowledgeable. Very skilled very attentive to our particular situation. He remembers us he is... has a good bed side manner, he explains things and we just appreciate him. All the years. We've been going to him for about fifteen years now. Thank you.

  • Jan 27, 2019

    Dr. Maziarz was very helpful. Very very kind and very very knowledgeable with what's going on with my procedure and my transplant. I appreciate that very much. Thank you.

  • Jan 26, 2019

    I have had a great experience! In depth answers to questions,possible procedures, etc. Have been very happy with the doctors and being upfront with conditions.

  • Jan 25, 2019

    Always good and has been for near a decade. We cover whatever is on my mind as well as what he wants to discuss and in detail as needed

  • Jan 19, 2019

    Head of the department very knowledgeable, easy to talk to, good experience.

  • Jan 10, 2019

    Excellent service and on time. Everyone was very friendly.

  • Jan 08, 2019

    Extremely positive.

  • Dec 22, 2018

    They're wonderful, and I for sure appreciate them. Thank you.

  • Dec 21, 2018

    Every time I enter OHSU, I am impressed with the care I receive. I have been a patient there for 10 years and have never had a bad experience. Even though I have a chronic disease (and, of course, I'm not thrilled with that), I have always been well cared for and do not have any qualms in going there. Dr. Maziarz is a superb doctor and I am pleased to be his patient.

  • Dec 21, 2018

    Dr. Maziarz is well-spoken and stops to explain medical terms so that the patient has some understanding of what is going on. This is most appreciated.

  • Dec 17, 2018

    Dr. Maziarzs? approach was direct, and clear. His explanation had covered all of my points of concern.

  • Dec 16, 2018

    Dr. Maziarz was able to answer questions I have been unable to get from 8 other providers. He made recommendations and offered solutions to on-going problems I have been experiencing. I have a feeling of hope after my visit with him.

  • Dec 08, 2018

    Very good. Dr. Maziarz is thorough and informative.

  • Dec 07, 2018

    Well, Dr. Maziarz is a wonderful doctor, and he listens to his patients and he listens to the caregivers, and he's encouraging and makes one let feel that they have hope, and although I had much hope that I would live, my faith in God, I just also know that Dr. Maziarz has a lot of expertise in this area and guided me through the process as well, so he's very, very astute and very, very warm and associates well with his patients. And so I appreciate OHSU very much and I'm thankful to be alive. So he's at 10 plus, actually. Thanks so much.

  • Nov 19, 2018

    No problems so far.

  • Nov 18, 2018

    The Dr. came to Medford vs. me having to drive to Portland. Very knowledgeable and had answers to all my and my wife's questions. We both felt much better after our time with the Dr.

  • Nov 18, 2018

    Informative fellow and able to communicate at layman's level. Very pleasant experience.

  • Nov 10, 2018

    Dr. Maziarz is just the best! He saved my life! I'm in total remission at this time! Dr. Maziarz is extremely knowledgeable, incredibly thorough, and very long on patience. If I kept on asking questions, he would keep on answering them. Everyone who brought us through the multiple myeloma journey at OHSU is TOP NOTCH!

  • Nov 09, 2018

    I'm extremely privileged to have Dr. Maziarz as my oncologist doctor. He's just a extremely knowledgeable, personable ... he's just a wonderful person. I'm really ... I'm really in a great doctor and I'm just fortunate to have him.

  • Nov 09, 2018

    Dr. Maziarz is not only an eternal optimist, but he also listened and understood my individual circumstances in life and gave me as many options as he could with my health and happiness in mind. He wants to see me succeed in any way he could help even when I choose to put myself in a precariously dangerous situation that may leave my well being in danger. He knows that it may take some prayers and luck if my cancer comes back, but I know he and the cancer team would do everything to try and return me to good health with a stem cell transplant if possible. God bless him and all the great faculty at OHSU.

  • Sep 07, 2018

    I have the utmost faith in Dr. Maziarz. I have never had a bad experienceat OHSU other than being told I have a cancer but that is not their fault, is it?

  • Aug 30, 2018

    Every employee smiles a greets with enthusiasm. The highlight of my week is receiving my chemo from this group of professionals. Love my Wednesday chemo

  • Aug 16, 2018

    We had a great experience with this doctor. He was knowledgeable, kind, very informative, and we feel we can trust too.

  • Aug 03, 2018

    I found the receptionist wonderful with a good sense of humor and helpful. Lisa, the person who drew my blood was compassionate and listened, plus did a great job using my port. Julie, Dr M's nurse, was compassionate and helpful as well. Another of Dr M's nurses was getting off shift, but took the time to come in an introduce herself. Dr Maziarz was just what I needed in a doctor. He was calm, explained things well, listened to me, answered my questions, and let me know what I was in for with the T cell therapy. Facing cancer is tough, but when paths narrow and choices lessen, it is overwhelming. This visit made me feel I would be in good hands, knowledgeable hands, compassionate hands. Thank you.

  • Jul 26, 2018

    Dr Maziarz is the most committed, knowledgeable, and compassionate doctor wever ever known. I was a hospital RN and have known many doctors. I feel Dr Maziarz keeps my 9 year history in his memory and refers to each medication, side effect, my personal reaction to each treatment.Unbelievably reassuring when I?m facing this incurable yet treatable life threatening bone marrow disease. I owe my life and we?ll being to him and his wisdom and compassion.

  • Jul 23, 2018

    The doctor was very kind and through and he explained the process that would be necessary or require when I come to that point in my illness. He was very through about what would happen and when it would happen. It was very comfortable and I thought nice to met with the doctor.

  • Jul 21, 2018

    Dr. Maziarz is absolutely amazing. I have full confidence in him as my provider and would refer him to anyone going through the treatment I'm going through. It was an absolute pleasure working with him and I look forward to working with him in the future.

  • Jul 21, 2018

    A great doctor, had a good experience. I have trusted him through the years with my lymphoma. Thank you.

  • Jul 20, 2018

    If you are being treated for Multiple Myeloma, Dr. Maziarz is your doctor! My understanding is he is the Director of hemotology oncology at OHSU. As we go through the MM journey, we know we are in the best hands possible. Make that four hands as his nurse/coordinator, Julie Ryan, is the best ever! As we come to the end of the initial journey culminating in bone marrow transplant next week, we have absolutely NO complaints about the care, the staff, the facility, even the food! It's a shame there are long periods of waiting for various things, but otherwise, we have nothing to criticize. Dr. Maziarz is very caring and patient.

  • Jul 20, 2018

    He was very passionate and very kind and explained everything very explicitly.

  • Jul 14, 2018

    Yes, everything was on time. Communication was good. The faculty there was good. The nurses involved in my treatment were excellent. And all things considered I had a good time which is hard to say for having things done to your blood. Anyway, I have no complaints. I was happy with the treatments, the communication, the appointments and all the rest of it.

  • Jul 13, 2018

    Hi. I love Dr. Maziar. He's been an amazing doctor for me. Between him, my positive attitude, and the grace of God, I am kicking cancer's ass. And I would highly, highly recommend Dr. Mazier to anybody.

  • Jun 20, 2018

    very happy with care given