Frank G. Martini, MD

4.9

1237 ratings Read Reviews

Northwestern Medical Group

Primary Specialty

Gastroenterology

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Practice Focus Areas

This medical professional has a particular interest or expertise in:

Education

Medical Education:: MD, Loyola University Stritch School of Medicine - 1982
Residency:: Loyola University Medical Center - 1985
Fellowships:: Loyola University Medical Center - 1987

Board Certifications

American Board of Internal Medicine - Gastroenterology (Certified)
American Board of Internal Medicine - Internal Medicine (Certified)

Faculty Profile

Clinical Assistant Professor, Feinberg School of Medicine

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Practice Groups and Affiliations

Medical Group:: Northwestern Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Catherine Gratz Griffin Lake Forest Hospital

Grayslake Ambulatory Surgery Center

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.

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Overall Rating

4.9

4.9

1237 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

February 27, 2026

5.0

He and his team went above and beyond making me feel confident and comfortable.

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February 23, 2026

5.0

I have been going to Dr. Martini for 12-13 years and he is always thorough and kind. Very diligent and asks if I have any questions.

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February 23, 2026

5.0

Dr. Martini was terrific. He was pleasant, careful to explain everything clearly, and quite reassuring about the outcome.

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February 20, 2026

5.0

I have gone to Dr. Martini for a number of years. He is on time for appointments and is efficient and knowledgeable.

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February 19, 2026

5.0

Kind. Helpful and a very good DR

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February 19, 2026

5.0

Dr Martini and the entire staff are knowledgeable, caring and always willing to provide excellent care.

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February 17, 2026

5.0

Great dr

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February 17, 2026

5.0

Dr. Martini explained the results after the procedure and there were no complications.

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February 16, 2026

5.0

A great doctor

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February 16, 2026

5.0

Very personable, very pleasant, and very available to answer questions.

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February 13, 2026

5.0

Very thorough, extremely knowledgeable and great communication.

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February 10, 2026

5.0

Thorough sharp friendly and caring

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February 09, 2026

5.0

Listened. Took what appeared to be logical next steps.

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February 04, 2026

5.0

nice

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January 29, 2026

5.0

Very understanding

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January 26, 2026

5.0

Very attentive

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January 26, 2026

5.0

been with him since the 1990s - he is simply the best

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January 23, 2026

5.0

Friendly with excellent communication after the service.

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January 23, 2026

5.0

Experienced, expert

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January 23, 2026

5.0

Professional and skilled.

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January 22, 2026

5.0

He always takes the time to listen and answer all of your questions.

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January 21, 2026

5.0

Dr. Martini, quickly diagnosed my problem and I felt reassured that he could solve the problem, Dr. Martini, has a very pleasant capable demeanor.

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January 19, 2026

5.0

He's thorough, thoughtful, reassuring, and caring. He listens and answers all my questions. He explains the procedure and gives a thorough report afterward.

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January 19, 2026

5.0

Very informative.

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January 13, 2026

5.0

He was on time, professional and confident.

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January 13, 2026

3.0

If asked, I would recommend him.

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January 12, 2026

5.0

Dr. Martini has a great bedside manner. Very approachable, takes questions and answers them. I have been going to him for approximately 15 years. And I plan to keep going.

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January 10, 2026

5.0

He's a great doctor!

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January 09, 2026

5.0

Good doctor

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January 09, 2026

5.0

The best

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January 06, 2026

5.0

Expert knowledge and responsive

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January 05, 2026

5.0

He's a very good doctor and very patient focused.

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January 03, 2026

5.0

Dr Martini has been great with everything , from explaining the procedure and answering all the questions I had.

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January 02, 2026

5.0

I have had Dr. Martini as my GI Dr. for decades. He is so knowledgeable and each time I have any new GI issue, he knows how to make me feel better and back to normal in no time. I always tell him to "please never retire".

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December 30, 2025

5.0

Very professional, well educated, great doctor, and people skills.

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December 29, 2025

5.0

He was helped me understand what was going to be done and what was found afterwards. Knowledgeable and without scaring me.

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December 26, 2025

5.0

Professional, answered questions.

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December 26, 2025

5.0

Very good bedside manner. Communication was excellent.

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December 19, 2025

5.0

Have been a patient of Dr. Martini for many years. High level of confidence in him.

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December 18, 2025

5.0

Very knowledgeable and compassionate.

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December 16, 2025

5.0

20-minute procedure; same-day result with clear next step instructions. I trust him.

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December 11, 2025

5.0

He made sure I understood everything that was going on with my health

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December 09, 2025

5.0

Very pleased

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December 09, 2025

5.0

Very nice

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December 05, 2025

5.0

I am a long time patient and Dr. Martini has always addressed my issues.

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December 04, 2025

5.0

Dr Martini explained before and after the procedure how it would go and then how it went

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December 04, 2025

4.0

I've been seeing him for years and like him.

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December 04, 2025

5.0

He alllayed my concerns and answered all my questions. His team was very caring.

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December 04, 2025

5.0

He was so informative and very kind to me

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December 03, 2025

5.0

I was very happy I accidentally ate and he still let me have the procedure even though I still scored a 9 on bowel removal. He asked me if I had any questions and I did not and I'm pleased the procedure went smoothly and. The nurses told me info that was very helpful about my polyp

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December 02, 2025

5.0

I've dealt with Dr. Martini in the past and he's the best.

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December 01, 2025

5.0

Straight forward, and fast

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November 28, 2025

5.0

Professional and experience

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November 28, 2025

5.0

He had very good communication with me before and after the procedure.

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November 25, 2025

5.0

Very professional treatment and thorough explanation

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November 14, 2025

5.0

Competent, reassuring, straightforward.

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November 13, 2025

5.0

Clear communication, on time, no fuss.

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November 06, 2025

5.0

He provided excellent quality of care.

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October 31, 2025

5.0

Dr Martini has been my gastroenterologist for many years and has always done excellent work and made valuable suggestions

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October 30, 2025

5.0

Enjoyed meeting & speaking with Dr. Martini!

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October 28, 2025

5.0

Just found out that Dr. Martini has done procedures on my parents ! Small world or just a well known Doctor !

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October 22, 2025

5.0

He listens attentively and explains your symptoms and recommends what's the best medicine for your illness and to give him a call within 2 weeks to see how you're doing...that's concern and caring.

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October 20, 2025

5.0

Dr Martini did a great job

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October 17, 2025

5.0

I didn't get to spend many waking moments with him, but he was kind and understanding when I was awake and can recall.

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October 17, 2025

5.0

Dr. Martini explained everything thoroughly answered all my questions I would highly recommend Dr. Martini

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October 17, 2025

5.0

He is a great diagnostician and searches for answers

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October 14, 2025

5.0

He explains so you can understand

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October 14, 2025

5.0

he met with me and talked to me very briefly before the surgery. when done he told my the results,, but didn't say what to do about the hemorrhoids he found. Thinking if he found them, why didn't he fix them, as that was the source of my bleeding

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October 11, 2025

5.0

Long time patient, excellent doctor

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October 10, 2025

5.0

Patient and thorough and made sure to answer all of my questions

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October 09, 2025

5.0

He listens and draws out how I'm feeling by asking me questions. He's a wonderful person.

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October 07, 2025

5.0

Had very little interaction with Dr. Martini but the results were good and the process was fast and easy.

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October 07, 2025

5.0

Professional and thorough.

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October 03, 2025

5.0

Very knowledgeable, concerned about your health, great listener.

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September 30, 2025

5.0

Dr. Martini is a thoughtful caring physician who showed concern for me. I appreciated the fact he did not cut corners while treating me and made sure I received all necessary care.

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September 26, 2025

5.0

I liked the way he treats patients.

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September 22, 2025

5.0

Very professional

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September 20, 2025

5.0

I am the kind of patient who likes explanations of tests, results, etc. and Dr. Martini has always been excellent here. He clearly knows his business, enjoys what he does, and has very good bedside manner; that is a great combination to find in a doctor.

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September 20, 2025

5.0

For the professionalism

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September 20, 2025

5.0

Professional and experienced

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September 19, 2025

5.0

Dr. Martini is very professional, answers all of my questions and explains things clearly.

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September 19, 2025

5.0

Extremely knowledgeable Pleasant and makes one feel comfortable Very professional.

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September 19, 2025

5.0

He's great!

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September 16, 2025

5.0

Very nice easy to talk to

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September 15, 2025

5.0

Experienced in the field

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September 15, 2025

5.0

Procedure went well with no issues.

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September 05, 2025

5.0

Dr. Martini has always done my colonoscopy. I trust him explicitly.

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September 04, 2025

5.0

I feel he's a very good physician

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September 02, 2025

5.0

His explanations are clear and his demeanor is reassuring.

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September 02, 2025

5.0

Very considerate; diagnosed my celiac disease back in the day.

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August 29, 2025

5.0

Very kind and efficient

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August 29, 2025

5.0

First time I met Dr. Mancini. He was very polite and answered all my questions without me feeling rushed.

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August 29, 2025

5.0

He listened to my concerns and questions about my condition. Carefully answered my questions and quickly explained his plan.

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August 26, 2025

5.0

He listened, asked important questions, and devised a reasonable plan to move forward.

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August 25, 2025

5.0

He's caring - listen and answer questions.

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August 25, 2025

5.0

Listed above. Have given out recommendations to others about Dr Martini He is a great doctor.

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August 19, 2025

5.0

On time, very thorough and approachable.

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August 19, 2025

5.0

He explained things completely and listened to my comments and concerns

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August 19, 2025

5.0

I have been seeing Dr. Martini for a very long time. He's always been very polite, professional, concerned about my health and has always addressed my issues.

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August 14, 2025

5.0

Straight and to the point

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Disclosures

Frank G. Martini, 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.

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