Alex Sieg, MD

Alex Sieg, MD

Hematology Oncology, Cancer Care

Primary Contact

563-244-5900

Services & Specialties

Areas of Specialization

  • Hematology Oncology
  • Cancer Care

Locations & Contact

Primary Location

MercyOne Clinton Hematology and Oncology

1410 North 4th Street
4th Floor
Clinton, IA 52732

View hours
Monday
8:00am - 4:00pm
Tuesday
8:00am - 4:00pm
Wednesday
8:00am - 4:00pm
Thursday
8:00am - 4:00pm
MercyOne Clinton Hematology and Oncology

MercyOne Clinton Specialty Care

1410 North 4th Street
Clinton, IA 52732

View hours
Monday
8:00am - 5:00pm
Tuesday
8:00am - 5:00pm
Wednesday
8:00am - 5:00pm
Thursday
8:00am - 5:00pm
Friday
8:00am - 1:00pm
MercyOne Clinton Specialty Care

MercyOne Genesis Davenport Cancer Center

1401 West Central Park Avenue
Davenport, IA 52804

View hours
Monday
8:00am - 4:30pm
Tuesday
8:00am - 4:30pm
Wednesday
8:00am - 4:30pm
Thursday
8:00am - 4:30pm
Friday
8:00am - 4:30pm
MercyOne Genesis Davenport Cancer Center

MercyOne Genesis Silvis Cancer Center

801 Illini Drive
Silvis, IL 61282

View hours
Sunday
Open 24 hours
Monday
Open 24 hours
Tuesday
Open 24 hours
Wednesday
Open 24 hours
Thursday
Open 24 hours
Friday
Open 24 hours
Saturday
Open 24 hours
MercyOne Genesis Silvis Cancer Center

Education & Certifications

Education

Undergraduate Degree:
University of Iowa

Graduate:
University of Indiana Harvard

Provider Ratings

The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn More >

4.9 out of 5

(304 ratings)

The 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.

71 Reviews

09/10/2025

Was scared to death to go thru cancer treatment but he listened to all my concerns and made it all doable! Youre very very lucky have him on ur staff!!!

09/10/2025

He took time to explain everything to when I was going through breast cancer, and I appreciated that.

09/10/2025

Very good experience

09/03/2025

Dr. Sieg listens ...follows through...patient and kind .

08/26/2025

He鈥檚 the best as a listener and helps us get through issues.

08/26/2025

I really like Dr Sieg he is a great doctor.

08/12/2025

Real knowledgeable about my situation.

08/06/2025

Was very helpful. I was very happy with the way he explained everything to me. Answered every question I asked.

07/30/2025

Knowledgeable/ answers all questions/hope Dr.Sieg stays

07/22/2025

Very good at listening to and answering my questions's

07/22/2025

Wonderful would highly recommended

07/18/2025

Excellent

07/15/2025

He is very impressive from day one and listens to all questions.

07/10/2025

He is a awesome dr I really like him.

07/10/2025

He feels like someone I can trust. He鈥檚 compassionate and caring.

07/09/2025

All good!

07/09/2025

Took the time to fully explain things.

07/07/2025

Nurses dr very nice

07/07/2025

Very impressed he was very nice. Checked everything. Explains so you understand

07/03/2025

The best and I feel very comfortable with him

07/01/2025

My family likes to come to my appointments and he is so kind to them and answers all their questions

06/30/2025

Listens...concerning..polite

06/30/2025

Dr. Sieg is ver considerate and caring about the care he provides.

06/27/2025

Dr Sieg was so compassionate and caring and got my referrals quickly. We transferred from a cancer center in KC and got better care the first time here then we did on all our visits in KC.

06/26/2025

Very pleasant.

06/26/2025

Dr Sieg is very caring, compassionate and concerned about how I am doing. If I have questions he takes the time to listen and give me answers as I never feel like he is rushing me through my appointments.

06/24/2025

Dr. Sieg is wonderful. He welcomes all kinds of questions!

06/23/2025

Nurse was very kind too!

06/23/2025

Am so satisfied with Dr Seige

06/18/2025

I like him a lot. Takes the time with you to explain and listens.

06/18/2025

Good and positive

06/18/2025

Dr. Sieg prescribed blood work for me to have done before I visit with him. Unfortunately, they attempted several times in each arm, without SUCCESS. Therefore, without the results from blood work, Dr. wasn't able to discuss other areas of my health with me. Yes, I was hydrated.

06/17/2025

LOVE THE CARE GIVEN BY EVERYONE THANK YOU GUY'S

06/16/2025

Great

06/16/2025

Dr Alex Sieg is a one of a kind Physician. I couldn鈥檛 ask for a better Doctor than him.

06/11/2025

He鈥檚 great to work with!

06/11/2025

I well go back and see him anytime I need to and I will tell other people about him. He is very good very nice and you finally got a Dr that nose what he鈥檚 doing he鈥檚 very good.

06/10/2025

He was friendly & explained things so that I fully understood.

05/19/2025

He understands my condition and has helped me with each of my concerns, especially with my current diagnosis of breast cancer.

05/13/2025

We are always given a beeper which is suppose to go off and then we head up for the infusion. The last two times the beeper has not gone off. Someone either calls us or a staff person from second floor has to physically come down and tell us to go upstairs. So the beepers are not working properly.

05/12/2025

She was great. She even went and looked up something for me.

05/06/2025

Dr Seig is very caring about his patients answers questions and explains in detail that you are able to understand I am most grateful to have such a wonderful doctor

05/02/2025

Had to wait 35 minutes past my appointment time

04/24/2025

He understood the situation with my broken hip and my concerns of not knowing what was going on and trying to get answers. He was kind, caring and compassionate

04/16/2025

So happy to have this unit available in Clinton!

04/15/2025

Dr. Sieg always listens to my questions and concerns and answers them satisfactorily.

04/10/2025

Very impressive

04/03/2025

Dr Sieg is most kind compassionate he explains everything to the fullest in a way that you can understand he truly seems to care about his patients

04/03/2025

Is very trustworthy and really seems to be on top of developments in his field.

04/02/2025

He was very caring. Answered questions, and explained everything

04/01/2025

Wonderful doctor Alex!

03/31/2025

He's careing

03/19/2025

He is a caring and professional doctor.

03/18/2025

I had a question about sur臐ery scar and he was very attentiv猫.

03/17/2025

I was impressed with Dr Sieg Although it was the first time I saw him he knew my background with my case very well

03/14/2025

All was great thank you

03/11/2025

Very satisfied.

03/06/2025

It was a very good visit

02/26/2025

I feel like I鈥檓 part of a team and treated as such!

02/25/2025

I feel he truly cares about his patients

02/18/2025

Dr.Alex Sieg is very caring & listened to our concerns. Nurses. & helpers on 2nd floor are so caring and will do most anything to help you out!

02/03/2025

Was very good and I found out information that I wanted

02/03/2025

Good experience

02/03/2025

He's very caring

01/31/2025

Seemed less organized than in-person visits.

01/17/2025

Dr. Sieg was empathetic and very kind as he work with me.

01/09/2025

Very compassionate and nice

12/11/2024

Vert supportive

12/02/2024

Very satisfied with treatment, care and staff.

11/12/2024

The nursing staff needs to be a team! There should be no competition, pettiness, back stabbing etc. The only patient should never be aware of these behaviors! Dealing with cancer patients should have the best nurses available with a passion for patient care. It is stressful enough to go through treatment without adding staff issues to the stress!

11/08/2024

We are very appreciative
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