Skip to navigation Skip to Content
COVID-19 and Flu
Contact Provider
Pay Bill
Refill Rx
COVID and Flu Resources contact your provider pay a bill refill prescriptions
Join a world-class health system. Find jobs

Professional Summary down arrow

  • Medical School
    Rush University Medical Center - Rush Medical College Chicago, IL, United States, M.D. 1988

    Internship
    University of South Alabama - College of Medicine Health System Mobile, AL, United States, Internal Medicine 1989

    Residency
    University of South Alabama - College of Medicine Health System Mobile, AL, United States, Internal Medicine 1991

    Fellowship
    University of North Carolina - School of Medicine Chapel Hill, NC, United States, Oncology/Hematology 1995

  • Professional Societies
    American Association for Cancer Research American Society of Clinical Oncology American Society of Hematology Wisconsin Medical Society

    Board Certifications
    Hematology: 1996, recertified 2006 Internal Medicine: 1991, recertified 2005 Medical Oncology: 1995, recertified 2005

    State Licenses
    Wisconsin

Patient Ratings down arrow

4.8
out of 5 (100 ratings, 28 comments)
4.8
Provider explanations of my problem
4.9
Provider concern for my questions
4.8
Provider's efforts to include me in treatment decisions
4.8
Provider's discussion of proposed treatment
4.9
My likelihood of recommending this provider

Patient Comments down arrow

Comments are also gathered from the Press Ganey patient satisfaction survey and displayed in their entirety with the exception of any language that may be considered slander, libel or contain private health information, which will be removed prior to publishing.
Comments are from Press Ganey surveys. Slander, libel and private health information are removed.
Sort by:
May 9, 2022
He is very good
May 24, 2022
Dr. Dean Delmastro is one of the best doctors. He did a comprehensive exam of me. He summarized my lab results and CT scan in a way that made sense to me. Dr. Delmastro has always been fast at solving my health problems.
May 31, 2022
Dr. Delmastro is awesome!
July 1, 2022
Dr. Delmastro was so kind. He explained everything so I could understand. Dr. spent time with me; which I really appreciated.
July 6, 2022
He very well knowledgeable in his area.
July 6, 2022
Dr. Hamblin is the best! She is so very competent and caring.
July 7, 2022
Excellent.
July 11, 2022
I JUST LOVE Dr. Dean Delmastro! He's SO CARING and NICE, explains everything to me. I have referred him to friends & relatives.
July 15, 2022
The best dr. ever.
August 16, 2022
Have recommended to others. Dr. Delmastro takes all the time you need with him & explains everything very thoroughly.
August 19, 2022
Dr. Delmastro is the reason I still treat with the Marshfield Clinic.
August 23, 2022
I am always treated with respect & as a person would like to be treated.
August 31, 2022
The providers exam was good, I am healing good.
October 7, 2022
Dr. Delmastro and his staff are all very caring. I have confidence in them. I am in stable remission with my [condition] for almost 5 yrs. & I thank Dr. Delmastro for that.
November 2, 2022
Dr. Delmastro also let my daughter who is a doctor listen in and ask questions. Excellent practice.
November 3, 2022
Dr. Delmastro is a great doctor. I would recommend him to all my family & friends. He helps me out a lot.
November 11, 2022
Very understanding and helpful.
December 8, 2022
All good.
December 9, 2022
Dr. Delmastro is a very good doctor and very kind. I recommend him highly.
December 13, 2022
Dr. Delmastro listens to me - his patient and my opinion. Dr. Delmastro goes above & beyond in patient compassion & caring.
December 22, 2022
Amazing [is] Dr. DELMASTRO so appreciative to have them for my care -
December 30, 2022
I have seen Dr. Delmastro twice. He is very kind & explains this very well.
January 30, 2023
I have always liked Delmastro's care, concern and treatments throughout my journey.
February 3, 2023
Dr. Delmastro is very thorough and is excellent in explaining things and is patient with all my questions.
February 13, 2023
Dr. Delmastro is a wonderful MD. One of the best I've ever seen. Kind & compassionate but also excellent clinically.
February 22, 2023
I have been seeing Dr. Delmastro for my cancer treatment for going on 6 years now, and I have complete confidence in him.
May 10, 2022
Dr. Delmastro is a wonderful mix of providing information & explaining things, and attentiveness, listening, empathy.
September 27, 2022
My family knew how I get treated when I return home.
September 27, 2022
My family knew how I get treated when I return home.
May 10, 2022
Dr. Delmastro is a wonderful mix of providing information & explaining things, and attentiveness, listening, empathy.
May 9, 2022
He is very good
May 24, 2022
Dr. Dean Delmastro is one of the best doctors. He did a comprehensive exam of me. He summarized my lab results and CT scan in a way that made sense to me. Dr. Delmastro has always been fast at solving my health problems.
May 31, 2022
Dr. Delmastro is awesome!
July 1, 2022
Dr. Delmastro was so kind. He explained everything so I could understand. Dr. spent time with me; which I really appreciated.
July 6, 2022
He very well knowledgeable in his area.
July 6, 2022
Dr. Hamblin is the best! She is so very competent and caring.
July 7, 2022
Excellent.
July 11, 2022
I JUST LOVE Dr. Dean Delmastro! He's SO CARING and NICE, explains everything to me. I have referred him to friends & relatives.
July 15, 2022
The best dr. ever.
August 16, 2022
Have recommended to others. Dr. Delmastro takes all the time you need with him & explains everything very thoroughly.
August 19, 2022
Dr. Delmastro is the reason I still treat with the Marshfield Clinic.
August 23, 2022
I am always treated with respect & as a person would like to be treated.
August 31, 2022
The providers exam was good, I am healing good.
October 7, 2022
Dr. Delmastro and his staff are all very caring. I have confidence in them. I am in stable remission with my [condition] for almost 5 yrs. & I thank Dr. Delmastro for that.
November 2, 2022
Dr. Delmastro also let my daughter who is a doctor listen in and ask questions. Excellent practice.
November 3, 2022
Dr. Delmastro is a great doctor. I would recommend him to all my family & friends. He helps me out a lot.
November 11, 2022
Very understanding and helpful.
December 8, 2022
All good.
December 9, 2022
Dr. Delmastro is a very good doctor and very kind. I recommend him highly.
December 13, 2022
Dr. Delmastro listens to me - his patient and my opinion. Dr. Delmastro goes above & beyond in patient compassion & caring.
December 22, 2022
Amazing [is] Dr. DELMASTRO so appreciative to have them for my care -
December 30, 2022
I have seen Dr. Delmastro twice. He is very kind & explains this very well.
January 30, 2023
I have always liked Delmastro's care, concern and treatments throughout my journey.
February 3, 2023
Dr. Delmastro is very thorough and is excellent in explaining things and is patient with all my questions.
February 13, 2023
Dr. Delmastro is a wonderful MD. One of the best I've ever seen. Kind & compassionate but also excellent clinically.
February 22, 2023
I have been seeing Dr. Delmastro for my cancer treatment for going on 6 years now, and I have complete confidence in him.
May 9, 2022
He is very good
May 10, 2022
Dr. Delmastro is a wonderful mix of providing information & explaining things, and attentiveness, listening, empathy.
May 24, 2022
Dr. Dean Delmastro is one of the best doctors. He did a comprehensive exam of me. He summarized my lab results and CT scan in a way that made sense to me. Dr. Delmastro has always been fast at solving my health problems.
May 31, 2022
Dr. Delmastro is awesome!
July 1, 2022
Dr. Delmastro was so kind. He explained everything so I could understand. Dr. spent time with me; which I really appreciated.
July 6, 2022
He very well knowledgeable in his area.
July 6, 2022
Dr. Hamblin is the best! She is so very competent and caring.
July 7, 2022
Excellent.
July 11, 2022
I JUST LOVE Dr. Dean Delmastro! He's SO CARING and NICE, explains everything to me. I have referred him to friends & relatives.
July 15, 2022
The best dr. ever.
August 16, 2022
Have recommended to others. Dr. Delmastro takes all the time you need with him & explains everything very thoroughly.
August 19, 2022
Dr. Delmastro is the reason I still treat with the Marshfield Clinic.
August 23, 2022
I am always treated with respect & as a person would like to be treated.
August 31, 2022
The providers exam was good, I am healing good.
September 27, 2022
My family knew how I get treated when I return home.
October 7, 2022
Dr. Delmastro and his staff are all very caring. I have confidence in them. I am in stable remission with my [condition] for almost 5 yrs. & I thank Dr. Delmastro for that.
November 2, 2022
Dr. Delmastro also let my daughter who is a doctor listen in and ask questions. Excellent practice.
November 3, 2022
Dr. Delmastro is a great doctor. I would recommend him to all my family & friends. He helps me out a lot.
November 11, 2022
Very understanding and helpful.
December 8, 2022
All good.
December 9, 2022
Dr. Delmastro is a very good doctor and very kind. I recommend him highly.
December 13, 2022
Dr. Delmastro listens to me - his patient and my opinion. Dr. Delmastro goes above & beyond in patient compassion & caring.
December 22, 2022
Amazing [is] Dr. DELMASTRO so appreciative to have them for my care -
December 30, 2022
I have seen Dr. Delmastro twice. He is very kind & explains this very well.
January 30, 2023
I have always liked Delmastro's care, concern and treatments throughout my journey.
February 3, 2023
Dr. Delmastro is very thorough and is excellent in explaining things and is patient with all my questions.
February 13, 2023
Dr. Delmastro is a wonderful MD. One of the best I've ever seen. Kind & compassionate but also excellent clinically.
February 22, 2023
I have been seeing Dr. Delmastro for my cancer treatment for going on 6 years now, and I have complete confidence in him.
February 22, 2023
I have been seeing Dr. Delmastro for my cancer treatment for going on 6 years now, and I have complete confidence in him.
February 13, 2023
Dr. Delmastro is a wonderful MD. One of the best I've ever seen. Kind & compassionate but also excellent clinically.
February 3, 2023
Dr. Delmastro is very thorough and is excellent in explaining things and is patient with all my questions.
January 30, 2023
I have always liked Delmastro's care, concern and treatments throughout my journey.
December 30, 2022
I have seen Dr. Delmastro twice. He is very kind & explains this very well.
December 22, 2022
Amazing [is] Dr. DELMASTRO so appreciative to have them for my care -
December 13, 2022
Dr. Delmastro listens to me - his patient and my opinion. Dr. Delmastro goes above & beyond in patient compassion & caring.
December 9, 2022
Dr. Delmastro is a very good doctor and very kind. I recommend him highly.
December 8, 2022
All good.
November 11, 2022
Very understanding and helpful.
November 3, 2022
Dr. Delmastro is a great doctor. I would recommend him to all my family & friends. He helps me out a lot.
November 2, 2022
Dr. Delmastro also let my daughter who is a doctor listen in and ask questions. Excellent practice.
October 7, 2022
Dr. Delmastro and his staff are all very caring. I have confidence in them. I am in stable remission with my [condition] for almost 5 yrs. & I thank Dr. Delmastro for that.
September 27, 2022
My family knew how I get treated when I return home.
August 31, 2022
The providers exam was good, I am healing good.
August 23, 2022
I am always treated with respect & as a person would like to be treated.
August 19, 2022
Dr. Delmastro is the reason I still treat with the Marshfield Clinic.
August 16, 2022
Have recommended to others. Dr. Delmastro takes all the time you need with him & explains everything very thoroughly.
July 15, 2022
The best dr. ever.
July 11, 2022
I JUST LOVE Dr. Dean Delmastro! He's SO CARING and NICE, explains everything to me. I have referred him to friends & relatives.
July 7, 2022
Excellent.
July 6, 2022
Dr. Hamblin is the best! She is so very competent and caring.
July 6, 2022
He very well knowledgeable in his area.
July 1, 2022
Dr. Delmastro was so kind. He explained everything so I could understand. Dr. spent time with me; which I really appreciated.
May 31, 2022
Dr. Delmastro is awesome!
May 24, 2022
Dr. Dean Delmastro is one of the best doctors. He did a comprehensive exam of me. He summarized my lab results and CT scan in a way that made sense to me. Dr. Delmastro has always been fast at solving my health problems.
May 10, 2022
Dr. Delmastro is a wonderful mix of providing information & explaining things, and attentiveness, listening, empathy.
May 9, 2022
He is very good

Honor a Shining Star

Shining Star Logo

Honor a provider or care team member who makes a difference in your care with a gift through the Shining Star program.

1-800-782-8581

  • Explore With Us
  • Facebook LinkedIn YouTube Instagram
Electronic Privacy | Terms of Use | Non-discrimination Statement Copyright © 2012 - 2023 Marshfield Clinic. All Rights Reserved.