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Whole patient care to help you

Thrive

Our Guiding Values

At Thrive Internal Medicine, we offer outstanding medical care and an unwavering commitment to caring for the whole patient.

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True Relationships

Dignity, respect, attention, and compassion form the foundation for trusted relationships leading to better patient outcomes. We truly enjoy getting to know our patients.

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Spending Time

With a limited number of patients, our doctors are able to take the time to fully assess, truly understand, and provide the highest quality of care. You will never feel rushed out of our office.

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Medical Expertise

With exceptional credentials and affiliation with Northwestern Medicine, we offer an unwavering commitment to the highest quality evidence-based care.

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Our top priority is better health for You

"Dr. Berg is everything you could ask for in a doctor; caring, knowledgeable, and approachable. She treats her patients as people and not just a number. She really listens and never rushes an appointment.”

—Patient of Dr. Sara Berg

"Dr. Petrungaro is very caring, thorough, and most importantly, listens. She truly desires wellness for her patients and management of chronic illness. Dr. Petrungaro will pick up a phone to discuss care with multiple specialties to ensure all are on the same page."

—Patient of Dr. Kate Petrungaro

"I am 61 years old and have never had a more compassionate, dedicated, and wonderful internist. She will go to the end of the earth to make sure that her patients receive the best possible care and has even paged specialists when she feels that they have not communicated in a timely fashion with her patients. She is the ultimate professional and represents the best of medical care.”

—Patient of Dr. Caroline Kalember

"Dr Sims has been my PCP for quite a while and she's very compassionate understanding and is always concerned when it comes to your health, she explains why you need to keep your health intact. She listens to her patients and their needs."

—Patient of Dr. Mariamou Sims

"Dr. Berg is thorough, compassionate, and kind. You can tell she's always thinking about what is best for her patients and I feel safe and lucky that she is my doctor! She follows up, is timely, and is always thinking about multiple strategies. She takes my overall well-being very seriously and is a great doctor.”

—Patient of Dr. Sara Berg

"Dr. Petrungaro is fantastic. She takes time with you and listens to you, respecting that you know what is going on and using that information to advise you on your health. She is focused on keeping me healthy and is accessible through messaging in MyChart any time. She is very prompt in getting back to me. I could not possible be more satisfied with her professionalism, care and interest in my health."

—Patient of Dr. Kate Petrungaro

"I have now been going to Dr. Kalember for years, because she is simply the best. She truly listens, she is incredibly smart, and she takes her time to make sure you have the proper care. She is an A+ doctor. I would highly recommend anyone looking for a GP.”

—Patient of Dr. Caroline Kalember

"Dr. Sims is an excellent listener and super skilled at providing tailor solutions specific to my needs. Also great at following up to my questions and inquiries on the portal. Great teamwork with the entire staff. There is no doubt that she and her staff truly care.”

—Patient of Dr. Mariamou Sims

Affiliated with:
Northwestern Memorial Hospital
Northwestern University
Northwestern Medicine Lake Forest Hospital
Northwestern Medicine Physician's Network

Board Certified
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Board Certified