Respiratory Virus and Vaccine Information

Ignacio J. Keller Sarmiento, MD

4.9

281 ratings Read Reviews

Northwestern Medical Group

Primary Specialty

Movement Disorders

Secondary Specialty

Neurology

Is your insurance accepted? Select plan

Schedule Appointment

Practice Focus Areas

This medical professional has a particular interest or expertise in:

Education

Medical Education:: MD, Vita-Salute San Raffaele Medical School - 2015
Fellowships:: McGaw Medical Center of Northwestern University - 2024

Languages Spoken

Italian
Spanish

Faculty Profile

Instructor, Feinberg School of Medicine

View Faculty Profile

Practice Groups and Affiliations

Medical Group:: Northwestern Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Northwestern Memorial Hospital

Ratings and Reviews

At Northwestern Medicine, our patient’s feedback is important to us. While different care providers have their own unique strengths, we strive to be as transparent as possible with our quality of care.

Read Ratings FAQs

Overall Rating

4.9

4.9

281 Ratings

Reviews from Patients

76 Reviews

Reviews from Patients

76 Reviews

February 26, 2026

5.0

-listened carefully, recalled details -explained the rationale for recommendations -discussed referrals and expected outcomes -offered several resources for self-study -devoted sufficient time to exam and discussion

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 23, 2026

5.0

He seems to be very knowledgeable of my disorder. He shows great concern for my wellbeing.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 16, 2026

5.0

He is patient and tries to get to root of your problem.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 12, 2026

5.0

Very good patient experience with excellent medical advice. Took time for examination and appropriate conversation.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 10, 2026

5.0

Great care

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 09, 2026

5.0

Smart and caring

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 08, 2026

5.0

As I stated above. He was patient with my questions, and very responsive to my questions in between appointments.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 26, 2026

5.0

Excellent Dr. he listens and explains. He answers questions and takes time, doesn't rush appointments.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 26, 2026

5.0

He listens he has good ideas is very knowledgeable about my Parkinson's and how to continue treatment into the future

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 26, 2026

5.0

Attentive, respectful responsive to patient needs, proactive in seeking answers and knowledgeable.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 22, 2026

5.0

Very thoughtful and listens carefully.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 22, 2026

5.0

He works with the patients .

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 19, 2026

5.0

He was kind, listened, knowledgeable, asked the right questions and took his time. Great bedside manner. I will 100% recommend him.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 19, 2026

5.0

Dr Keller-Sarmiento listens carefully to what I have to say and acknowledges that it's an emotional issue for me. He seemed unhurried, which I appreciated.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 14, 2026

5.0

He is a competent physician who answers all questions and takes all the time I need without appearing rushed. His accompanying medical student was professional, very competent and caring.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 08, 2026

5.0

Clear explanation, great game plan

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 03, 2026

5.0

Knows what he's doing.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 22, 2025

5.0

He always takes his time with me. I never feel rushed and always makes sure all my questions are answered

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 13, 2025

5.0

See above. Very caring

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 11, 2025

5.0

Dr. Keller Sarmiento has an excellent beside manner - calm and relaxed. He is a very good listener and responds with answers appropriate for the patients understanding level. It is apparent he knows Parkinson disease very well and seems interested in the patients well being. I would highly recommend him.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 11, 2025

5.0

Personable and knowledgeable

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 10, 2025

5.0

Professional, patient, caring, responsive explanations to my concerns and questions.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 09, 2025

5.0

This is what you wish from any doctor.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 22, 2025

5.0

Quality care

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 17, 2025

5.0

He has great bedside manners.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 13, 2025

5.0

My treatment plan includes my opinions and input.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 11, 2025

5.0

Friendly, caring and professional

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 10, 2025

5.0

He actively listened to my details of my seizures and created a helpful action plan to keep my health on the best possible path going forward.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 06, 2025

5.0

The doctor was also very kind, knowledgeable and helpful. He was also a very good listener.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 05, 2025

5.0

Although this was our 2nd appointment I felt like he had been our doctor for a much longer time. I felt like he knew us

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 28, 2025

5.0

Listens

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 22, 2025

5.0

Bedside manner made my 89 yo mom feel comfortable and taken care of in their first meeting.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 07, 2025

5.0

personable, likeable and very knowledgeable

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 27, 2025

5.0

NW's reputation in Parkinson Disease study

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 27, 2025

5.0

Professional and personable.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 26, 2025

5.0

Listened to me and acted on my problems

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 26, 2025

5.0

Top doctor!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 17, 2025

5.0

. He is always on time . He answers all my questions . He is very kind and doesn't rush

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 16, 2025

5.0

It is evident his knowledge of the subject matter.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 15, 2025

5.0

He finally was able to give me a likely diagnosis after several previous doctors dismissed my serious symptoms as anxiety. He was patient, understanding, considerate, and explained everything clearly. He was also willing to refer me to a different doctor whom he thought could be helpful with my particular situation. He explained everything I asked and was also willing to admit when his knowledge in a particular area was limited. I am extremely grateful for Dr. Keller Sarmiento.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 08, 2025

5.0

He really cares about his patients

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 08, 2025

5.0

He doggedly pursued testing until he arrived at the diagnosis.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 11, 2025

5.0

I would feel very comfortable recommending Dr. Keller.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 11, 2025

5.0

Dr Keller was extremely professional and explained my current Neurological condition in a concise and straightforward understanding.Dr Keller performed a thorough neurology assessment and evaluation. He asked all the appropriate questions pertaining to my condition. Gave follow up instructions and a return visit. I received the best Neurological care possible today from Dr.Keller. Hopefully this was a positive learning experience for the Medical Assistant/Student who was in attendance.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 10, 2025

5.0

he told us about the study and asked us tom get Yasar in it. thats how they found what his problem was.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 09, 2025

5.0

Excellent physician.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 07, 2025

5.0

Dr. Sarmiento is thorough, made sure that I understood questions and procedures and was very kind. He answered my questions and discussed the positive impact of exercise as well as discussing what items may lead to cognitive decline.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 06, 2025

5.0

Very confident in him

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 02, 2025

5.0

Every moment of the considerable time spent diagnosing my condition had a purpose. Dr. Keller Sarmiento is an experienced physician in the field of Parkinsonism and related movement disorders.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 31, 2025

5.0

Up to date treatments. Patient has opportunity and choice. Answers questions. Positive attitude.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 23, 2025

5.0

Manner and communication

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 21, 2025

5.0

Easy to talk to Answered my questions

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 19, 2025

5.0

Knowledgeable and personable.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 17, 2025

5.0

Thorough and efficient

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 17, 2025

5.0

Knowledgeable and competent

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 17, 2025

5.0

Kind and professional

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 14, 2025

5.0

Very thorough, asked good questions, had valuable suggestions.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 14, 2025

5.0

Attention to detail.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 02, 2025

5.0

Dr. Sarmiento answered all of our questions fully and conducted physical movement tests efficiently. He explained the purpose of each test and his conclusion of the patient's movements. He ordered medication and gave advice for therapy, all with clarity and understanding.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 24, 2025

5.0

competent

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 24, 2025

5.0

Super nice, don't feel rushed. He took his time and answered all my questions

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 23, 2025

5.0

Expertise and knowledge Empathetic and willingness to answer questions

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 23, 2025

5.0

He was nothing short of awesome. He is a professional and cares a lot. Looking forward to my next appointment in August

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 23, 2025

5.0

Dr. Keller had excellent communication skills, patient with my elderly mother and kind.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 15, 2025

5.0

Thorough, knowledgeable, compassionate care.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 10, 2025

5.0

calm nature

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 09, 2025

5.0

He was right there all explain to me what he was going to do

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 06, 2025

5.0

The medication that he prescribed helped me very well

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 05, 2025

5.0

He is great! He takes time to listen and explain things! I highly recommend him!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 26, 2025

5.0

As I stated earlier the doctor is very knowledgeable of problems and issues relating to Parkinson's disease

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 24, 2025

5.0

Dr. Sarmiento was knowledgeable, friendly and very thorough during my visit

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 17, 2025

5.0

Dr. Sarmiento was excellent. He came into the room prepared, looking over notes of previous doctors from other hospitals. He was also very knowledgeable, answered questions and explained things very well. Great bedside manner.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 09, 2025

5.0

Accessibility, professionalism, efficiency of Dr Sarmiento were impressive.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 09, 2025

5.0

Caring, intelligent, easy to understand when he describes medical terms, I TRUST him, and I know he has my best interest.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 06, 2025

5.0

First-rate treatment. Patient focused.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 03, 2025

5.0

Dr Ignacio Juan Keller Sarmiento is an exceptional doctor!!! I found him on my own for a second opinion, and had to be by divine intervention. He is kind, respectful, knowledgeable, detailed, thorough, attentive, dedicated, caring and compassionate! Dr Ignacio made me feel that my health was in the right hands, and took his time to answer questions and explain everything in detail during the exam as if I was a family member. Dr Ignacio uncovered my true condition -after being misdiagnosed and given an unsuccessful treatment by a different provider- and steered me in the right direction. I wish all my doctors were at that level! Dr Ignacio is a true asset to his patients, his students and the medical field!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

Disclosures

Ignacio J. Keller Sarmiento, MD reported no external professional relationships for calendar year 2024.

External Professional Relationships

Pharmaceutical, device, and biotechnology companies frequently collaborate with basic scientists and physicians within an academic medical center to help advance science and improve patient care. These relationships are important in achieving scientific breakthroughs and in establishing the effectiveness and safety of promising new therapies. In order to assure objectivity in clinical research and patient care, the Northwestern University Feinberg School of Medicine (Feinberg), Northwestern Memorial HealthCare, Children's Hospital of Chicago Medical Center, and the Shirley Ryan AbilityLab have adopted integrity policies that require research and clinical faculty (in full-time, part-time, and unpaid/voluntary categories) to report compensated and uncompensated external industry relationships. Patients are encouraged to discuss these disclosures with their physician as well as to inquire as to how these relationships are overseen by Feinberg. To learn more about our Disclosure and Professional Integrity Policy, and the conflict of interest policies of our joint affiliate survey partners, please go to our Office for Regulatory Affairs Policies page.

View More Disclosures