Tiffany A. Karas, MD

5.0

1902 ratings Read Reviews

Northwestern Medicine Regional Medical Group

Primary Specialty

Endocrinology

Is your insurance accepted? Select plan

Schedule Appointment

Practice Focus Areas

This medical professional has a particular interest or expertise in:

Transgender Healthcare

Education

Medical Education:: MD, Southern Illinois University School of Medicine - 2000
Residency:: Loyola University Medical Center - 2003
Fellowships:: Loyola University Medical Center - 2005

Board Certifications

American Board of Internal Medicine/Endocrinology, Diabetes and Metabolism - Endocrinology, Diabetes & Metabolism (Certified)

Practice Groups and Affiliations

Medical Group:: Northwestern Medicine Regional Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Delnor 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

5.0

5.0

1902 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

February 24, 2026

5.0

Dr Karas is so caring for her patients. She takes the time to listen and to be of any help needed.

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

Thanks for your feedback!

February 24, 2026

5.0

Dr. Karas is truly a great doctor. She cares. She's kind. She discusses issues with the patient. She's brilliant but not elite or overbearing. She is a doctor that makes the patient comfortable.

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

Thanks for your feedback!

February 24, 2026

5.0

Dr Karas always listens and answers all my questions. She gives me get me her expert medical advice on my issues. Willing to listen to my concerns .

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

Thanks for your feedback!

February 23, 2026

5.0

She is outstanding professional with genuine care for her patients

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

Thanks for your feedback!

February 23, 2026

5.0

Dr Karas is amazing! She was very attentive and listened and asked a lot of questions. She spent a lot of time and with me and had a plan of action for my care.

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

Thanks for your feedback!

February 16, 2026

5.0

Clear and efficient

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

Thanks for your feedback!

February 15, 2026

5.0

Dr. Karas is a great doctor. She listens to me and is genuinely concerned for my health.

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

Thanks for your feedback!

February 12, 2026

5.0

Dr Karas is totally engaged in me and my care whenever I'm there, but also if I message or call with any questions or concerns.

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

Thanks for your feedback!

February 09, 2026

5.0

Dr Karas takes her time and is very efficient and efficient at her job.

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

Thanks for your feedback!

February 09, 2026

5.0

Dr Karas is very professional and takes the time to answer questions.

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

Thanks for your feedback!

February 09, 2026

5.0

Dr. Karas remembers life stories that you have shared which makes you feel good and that she cares. She explains things in a way that is easy to understand.

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

Thanks for your feedback!

February 09, 2026

5.0

My best caregiver ever. Listens as well as well as giving advice on how to proceed with treatment. Like a partner in my health care. I feel like she is apart of my family.

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

Thanks for your feedback!

February 09, 2026

5.0

Dr Karas is the best. Great doctor wonderful bedside manor. Great staff. Discuss your car with you. Doesn't dictate to you.

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

Thanks for your feedback!

February 03, 2026

5.0

She is very aware of a person as a whole being, not just the medical facts. Easy to talk. Inspiring in that she shows interest in a patient's quality of life. Compassionate.

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

Thanks for your feedback!

January 30, 2026

5.0

She's the best. Dr. Karas includes me in my care and takes time to explain her recommendations.

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

Thanks for your feedback!

January 29, 2026

5.0

With compassion and focus, Dr. Karas listens to me and acts with caution and clear direction. I've always known that I am in the very best of hands with Dr. Karas.

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

Thanks for your feedback!

January 28, 2026

5.0

I am very happy with Dr. Karas as a person and doctor.

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

Thanks for your feedback!

January 28, 2026

5.0

Dr Karas has a wonderful manner of listening to and caring for me as a patient. She is knowledgeable, and encourages me to take part in decision making of my health choices.

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

Thanks for your feedback!

January 27, 2026

5.0

Been with her for years and I travel a distance to get there...she is a great, caring doctor.

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

Thanks for your feedback!

January 27, 2026

5.0

Shes kind and listens to you problems and tries to solve them

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

Thanks for your feedback!

January 26, 2026

5.0

She is naturally honest and genuinely caring

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

Thanks for your feedback!

January 26, 2026

5.0

Top notch Very knowledgeable Great to talk to

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

Thanks for your feedback!

January 22, 2026

5.0

Compassionate and competent care

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

Thanks for your feedback!

January 19, 2026

5.0

Dr. Karas is excellent.

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

Thanks for your feedback!

January 19, 2026

5.0

Personal interactions very positive

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

Thanks for your feedback!

January 19, 2026

5.0

She listens to you and gives you time, answers all your questions thoroughly

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

Thanks for your feedback!

January 18, 2026

5.0

She is very engaged with my care .

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

Thanks for your feedback!

January 13, 2026

5.0

you have a specialist for the lgbtq community. Thank you!

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

Thanks for your feedback!

January 12, 2026

5.0

Good listener, willing to figure out issue or find someone with specific knowledge, explained her reasoning. First endo where I felt heard.

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

Thanks for your feedback!

January 12, 2026

5.0

Dr. Karas always asks a lot of questions and considers multiple angles before recommending a plan of treatment. She is aware of changes in insurance, diabetic supplies and medications. She encourages me to do my part to manage my diabetes.

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

Thanks for your feedback!

January 08, 2026

5.0

I want to recommend her to everyone but I also don't want it to be harder to book with her - LOL!

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

Thanks for your feedback!

January 06, 2026

5.0

She made proper sense and was very clear about what she said to me

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

Thanks for your feedback!

January 05, 2026

5.0

She is thorough, insightful and intelligent. Listens to her patients thoroughly.

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

Thanks for your feedback!

October 18, 2025

5.0

Compassionate care and thoughtful patient-centered decision making

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

Thanks for your feedback!

October 16, 2025

5.0

She and her team are all business but deliver care in a compassionate and thorough manner.

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

Thanks for your feedback!

October 14, 2025

5.0

Dr takes her time during the appointment. Listens to my concerns and includes me in decision-making

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

Thanks for your feedback!

October 14, 2025

5.0

Everything I just wrote says it all. Wonderful , Kind and Thorough. Plus she always really cares about all her patients.

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

Thanks for your feedback!

October 13, 2025

5.0

Dr Karas is one the kindest most thoughtful physicians I have ever met, she remembers everything about you and your history and is always so pleasant. She never rushes you and she really is invested in your care. I am lucky to have found her many years ago. Highly recommend!

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

Thanks for your feedback!

October 13, 2025

5.0

Answers questions, cares about my feelings and thoughts, we make decisions together

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

Thanks for your feedback!

October 09, 2025

5.0

She always takes the time to listen to me. She explaines so I can understand Dr. language. Very good Dr.

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

Thanks for your feedback!

October 07, 2025

5.0

Dr Karas truly cares! She takes the time with her patients. She gets to understand them as a whole and then creates a plan of care that benefits us as an individual patient.

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

Thanks for your feedback!

October 05, 2025

5.0

very good care, answers questions and cares about her patients

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

Thanks for your feedback!

October 05, 2025

5.0

Excellent physician- caring,good listener

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

Thanks for your feedback!

October 04, 2025

5.0

Dr. Karas is very thorough and a great listener. Demonstrates compassion. I would definitely recommend her to friends and family if needed an endocrinologist

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

Thanks for your feedback!

September 30, 2025

5.0

Fantastic doctor

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

Thanks for your feedback!

September 30, 2025

5.0

Dr. Karas is a very caring person and really wants to provide the best care for me as she can.

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

Thanks for your feedback!

September 30, 2025

5.0

Great Doctor.

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

Thanks for your feedback!

September 29, 2025

5.0

Beyond her clinical skills, Dr. Karas exudes great and sincere empathy for her patients. She always reassures me that this is a complex condition to manage and celebrates each and every success.

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

Thanks for your feedback!

September 25, 2025

5.0

Professionalism and kindness of Doctor Karas and her staff.

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

Thanks for your feedback!

September 24, 2025

5.0

She is a caring doctor. She listens to your concerns and does not rush you through the office visit.

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

Thanks for your feedback!

September 23, 2025

5.0

Dr Karas is always so kind especially as she listens to your concerns or questions with such patience ..

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

Thanks for your feedback!

September 22, 2025

5.0

She is very caring and knows her job quite well.

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

Thanks for your feedback!

September 18, 2025

5.0

Dr Karas is my favorite Northwestern doctor. She listens, makes changes and suggestions as needed, goes over my readings and health thoroughly, is very knowledgeable about diabetes and it treatments.

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

Thanks for your feedback!

September 16, 2025

5.0

Excellent physician

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

Thanks for your feedback!

September 03, 2025

5.0

She is a very caring doctor who takes her time to know you as the patient and to listen to your concerns and/or questions.

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

Thanks for your feedback!

September 03, 2025

5.0

Dr. Karas explains your treatment plan and listens to your concerns.

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

Thanks for your feedback!

August 29, 2025

5.0

She is very knowledgeable and thorough.

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

Thanks for your feedback!

August 28, 2025

5.0

She listens to you. And she looks at you when you are talking to her. She is so kind and so easy to talk to.

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

Thanks for your feedback!

August 27, 2025

5.0

She is easy to talk to and understands my issues

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

Thanks for your feedback!

August 26, 2025

5.0

Dr. Karas is extremely knowledgeable, compassionate, dedicated and kind. She has treated me in such a compassionate and expert level. She's the best around.

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

Thanks for your feedback!

August 21, 2025

5.0

Dr Karas is so smart and explains everything so that it is understandable. She listens and she is very compassionate.

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

Thanks for your feedback!

August 21, 2025

5.0

She is very straightforward but has an excellent bedside manner. She was honest about my options and respected and valued my input

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

Thanks for your feedback!

August 20, 2025

5.0

Dr Kara's is always positive, encouraging and caring. She doesn't just listen but hears what I am saying. She answers all questions without judgement and with clear fact based information/ written material. Because of Dr Karas's vast knowledge and expertise. I never feel rushed and she makes sure all your questions/ concerns are addressed before ending your appointment. Dr Kara's has given me the power to easily control my IDDM not it controlling me. I know for a fact and appreciate that Dr Karas has given me the absolute BEST care possible!

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

Thanks for your feedback!

August 19, 2025

5.0

Dr. Karas is knowledgeable, professional, listens to her patients, and takes the necessary time to do a thorough assessment.

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

Thanks for your feedback!

August 19, 2025

5.0

For many of the reasons I gave above. She is highly intelligent, but cares and communicates well on all care issues with me. It is a privilege to be her patient.

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

Thanks for your feedback!

August 18, 2025

5.0

Dr. Karas has always given exemplary care not only for myself but also for a family member. She is always honest and realistic about treatment outcomes.

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

Thanks for your feedback!

August 14, 2025

5.0

She is the best most caring doctor. She really cares about her patience

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

Thanks for your feedback!

August 14, 2025

5.0

Explains well, always nice.

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

Thanks for your feedback!

August 13, 2025

5.0

She takes time with me and explains everything.

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

Thanks for your feedback!

August 13, 2025

5.0

Dr. Karas is wonderful! She is professional, friendly, and helpful.

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

Thanks for your feedback!

August 12, 2025

5.0

As I said previously She cares as if you were her Family

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

Thanks for your feedback!

August 11, 2025

5.0

I like the care my doctor gives me. Thank you

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

Thanks for your feedback!

August 08, 2025

5.0

She takes her time explaining everything.

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

Thanks for your feedback!

August 07, 2025

5.0

Listens and explains information very well, wether it's information I need to know or whether it is a question asked.

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

Thanks for your feedback!

August 06, 2025

5.0

Dr. Karas is such a a caring doctor and she listens to you and doesn't rush your visit. I'm so happy my primary doctor recommended her to me.

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

Thanks for your feedback!

July 31, 2025

5.0

Key word is care. Her goal is to find out what her patient needs so that she can assist in making their life healthier and a lot happier!

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

Thanks for your feedback!

July 29, 2025

5.0

She totally took her time to discuss all of my concerns and offer possible solutions. I have seen her over the years, and missed her when I tried to have my Internist handle the conditions Dr. Karas has followed up on for me in the past. She's very knowledgeable about her area of expertise

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

Thanks for your feedback!

July 28, 2025

5.0

She spends time and allows for all my questions to be answered. She is very easy to talk to and very knowledgeable.

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

Thanks for your feedback!

July 28, 2025

5.0

Most professional and knowledgeable on the subject I have had as a doctor. Great communication skills Listens attentively and answers all question you have Shows great care in dealing with patients

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

Thanks for your feedback!

July 26, 2025

5.0

She is so nice, very knowledgeable and I feel very comfortable with Dr. Kara's. I have recommended her to people, unfortunately she is very busy in here practice. I'm happy to be her patient.

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

Thanks for your feedback!

July 24, 2025

5.0

Takes the time to answer questions. Very caring. Involves patient in future treatments. Explains thoroughly.

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

Thanks for your feedback!

July 24, 2025

5.0

Very professional

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

Thanks for your feedback!

July 22, 2025

5.0

She i gives me the information and help I need to keep my blood sugar in control>

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

Thanks for your feedback!

July 22, 2025

5.0

Dr. Karas listens, she is compassionate, and gives excellent care to her patients.

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

Thanks for your feedback!

July 21, 2025

5.0

She listens and I feel she really knows me.

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

Thanks for your feedback!

July 16, 2025

5.0

Excellent care and bedside manner.

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

Thanks for your feedback!

July 11, 2025

5.0

Dr Karas is an amazing physician who has shared her vast knowledge of diabetes and current treatment techniques to help me get greatly improved results. Dr Karas is also incredibly kind and non judgemental.

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

Thanks for your feedback!

July 11, 2025

5.0

Great doctor

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

Thanks for your feedback!

July 08, 2025

5.0

she hears what I have to say and then we set up a plan of action Glad she is there for me

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

Thanks for your feedback!

July 07, 2025

5.0

Outstanding care. Patient and thoughtful. Thorough. Great care. Thanks much.

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

Thanks for your feedback!

July 04, 2025

5.0

Dr. Karas is the kindest, most compassionate and understanding doctor I've ever had. She cares for her patients and is incredibly gender affirming and supportive. If I could rate her higher than 10/10 I would.

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

Thanks for your feedback!

June 26, 2025

5.0

Absolutely would recommend her. She has guided me thru thyroid cancer and diabetes management with excellent care and advice.

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

Thanks for your feedback!

June 24, 2025

5.0

Dr. Karas takes the time to answer your questions and explains the details in language that a non-medical person can understand.

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

Thanks for your feedback!

June 23, 2025

5.0

Dr Karas is patient and thorough!! I always feel heard and appreciate the time she takes!

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

Thanks for your feedback!

June 22, 2025

5.0

Excellent doctor

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

Thanks for your feedback!

June 20, 2025

5.0

Dr Karas has great communication. She listens to your concerns, thoroughly reviews your medical information and takes the time to talk to you about your health and what needs to be done

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

Thanks for your feedback!

June 20, 2025

5.0

Se above She is phenomenal

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

Thanks for your feedback!

June 19, 2025

5.0

Personable. Answers questions. Advises regarding options. Doesn't make u feel rushed or push decisions without giving time to consider.

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

Thanks for your feedback!

June 17, 2025

5.0

My experience and her knowledge and willingness to be sure I am well informed

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

Thanks for your feedback!

June 16, 2025

5.0

Dr. Tiffany Karas is Awesome! She is incredibly knowledgeable, thoroughly professional, and really cares about her patients. She helped to save my life back in 2018 and has been helping me to improve my health ever since. We will always appreciate the outstanding work that she does and are so very fortunate that she is my Doctor.

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

Thanks for your feedback!

Disclosures

Tiffany A. Karas, 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