Gerta S. Janss, MD

Gerta S. Janss, MD

4.8 
2165 ratings  Read Reviews
Northwestern Medicine logoNorthwestern Medical Group

Primary Specialty

Dermatology

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Reasons to Schedule a Visit

This medical professional may be a good choice for you if you are looking for care for any of the following:

  • Acne (adult or teenager)
  • Bacterial skin infection (cellulitis)
  • Blisters (pemphigus)
  • Bug bites
  • Cosmetic consult
  • Cyst or abscess
  • Dark skin patches (melasma)
  • Eczema (dry, itchy or bumpy skin)
  • Genital concerns, male
  • Genital conditions, female
  • Hair follicle that is inflamed or infected (folliculitis)
  • Hair loss (alopecia)
  • Hidradenitis suppurativa
  • History of melanoma
  • Inflamed cyst (swollen, red or painful cyst)
  • Itchy, peeling or red skin
  • Mole or lesion evaluation
  • Mole that is bleeding
  • Nail evaluation
  • Noncancerous skin tumor (seborrheic keratosis)
  • Psoriasis
  • Rash
  • Redness or flushing of face (rosacea)
  • Scar tissue (keloid)
  • Skin allergies or hives
  • Skin cancer concern
  • Skin color loss (vitiligo)
  • Skin complications from radiation or chemo (cancer treatments)
  • Skin dark spots (hyperpigmentation)
  • Skin exam for full body
  • Skin fungus
  • Skin immune systems conditions (sarcoidosis, granuloma, morphea, scleroderma)
  • Skin inflammation (atopic/contact dermatitis)
  • Skin tag removal
  • Sun spots (actinic keratosis)
  • Sweating excessively (hyperhidrosis)
  • Viral skin infection (molluscum)
  • Warts
  • White bumps on skin (milia)

Education

Medical Education:
MD, University of Illinois at Chicago College of Medicine - 1987
Internship:
McGaw Medical Center of Northwestern University - 1988
Residency:
University of Illinois College of Medicine at Chicago - 1991

Languages Spoken

  • Spanish

Board Certifications

  • American Board of Dermatology - Dermatology (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
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.

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Overall Rating

4.8
4.8 

2165 Ratings

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Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

Sort By Newest
100 Most Recent Reviews

April 28, 2025

5.0

Knowledgeable and caring.

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April 28, 2025

5.0

Extremely knowledgeable and cares for patients.

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April 24, 2025

5.0

Empathetic and practical

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April 24, 2025

5.0

She's great, thorough and kind.

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April 23, 2025

5.0

She explains things well

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April 22, 2025

5.0

She is under stands the problem and treats appropriately.

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April 22, 2025

5.0

I loved that Dr. Janss spoke directly to my teenage son and not just to me. She was so friendly and insightful.

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April 21, 2025

5.0

One of the best in her field.

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April 16, 2025

5.0

She is so experienced, her expertise is really something to be trusted. And yet, she is approachable, friendly and thorough.

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April 16, 2025

5.0

Professional, friendly and knows her patients well

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April 15, 2025

5.0

Dr Janss is an excellent doctor.

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April 14, 2025

5.0

Always excellent

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April 12, 2025

5.0

Dr. Janss saved my life 20 years ago when she found a Melanoma on my ankle, and quickly referred me to a cancer surgeon, who removed the Melanoma.

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April 10, 2025

5.0

Excellent clinician with very personal service.

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April 10, 2025

5.0

Knowledgeable and friendly

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April 09, 2025

5.0

Gave me good info. Pleasant and professional.

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April 08, 2025

5.0

Took the time to answer questions and explain procedure.

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April 07, 2025

5.0

Friendly and welcoming care provider

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April 06, 2025

5.0

Knows what she does

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April 01, 2025

5.0

Dr. Janss is a knowledgeable and caring physician. I have eczema, and she took the time to explain in detail all the options for treatment.

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April 01, 2025

5.0

Excellent care

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March 28, 2025

5.0

Dr. Janss is attentive and educates me about my concerns

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March 28, 2025

5.0

See explains everything thoroughly !!! She made sure that we understood everything!!!

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March 27, 2025

4.0

Knowledgeable and takes time to explain everything.

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March 27, 2025

5.0

Thorough exam and ran on time

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March 26, 2025

5.0

Very personable

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March 25, 2025

5.0

Took the time to talk with me and answer my questions

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March 25, 2025

5.0

I have been a patient of Dr. Gerta Janss for many years. She is efficient, pleasant, and has kept my skin in excellent condition.

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March 21, 2025

5.0

Dr. Janssen was very pleasant yo talk to and took the time to listen and answer my questions. The nurses & staff were great as well.

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March 19, 2025

5.0

She could not have been kinder, knowledgeable, and efficient.

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March 19, 2025

5.0

Takes time to explain and attentive to any questions

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March 19, 2025

5.0

Her medical expertise and warm personality.

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March 18, 2025

5.0

Dr. Janss is amazing. Attentive to my care and interested in my thoughts abut my healthcare plan. Her MA, Bri was so nice. Attentive, thorough, seemed genuinely interested in my concern and asked clarifying questions. Great team. From start to finish.

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March 17, 2025

5.0

Great care provider.

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March 16, 2025

5.0

Accessible, thorough, caring, efficient and explains things in a way I can understand.

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March 13, 2025

5.0

Dr. Janss is the best! She takes the time to listen to my concerns and then walks carefully through variety of treatment options. She goes above and beyond to help me find skin care solutions that work best for me.

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March 13, 2025

5.0

Thorough Explains Excellent manner of communicating

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March 11, 2025

5.0

Very professional

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March 11, 2025

5.0

Good doctor!!!

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March 03, 2025

5.0

Been seeing Dr. Janss for over 20 years. Kind, explains problem and quick resolution of problem.

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February 28, 2025

5.0

We have been her patient for over 30 years. She is the BEST there is.

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February 27, 2025

5.0

Compassionate, warm, efficient

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February 26, 2025

5.0

She's profoundly competent and a doctor who makes the patient's concerns her own while caring and treating you efficiently and effectively. My ideal of what a doc should be.

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February 26, 2025

5.0

Very thorough

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February 26, 2025

5.0

She is professional, thorough, caring, and the absolute best dermatologist I have ever been too.

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February 25, 2025

5.0

Good, responsive care.

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February 25, 2025

5.0

She is outstanding

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February 23, 2025

5.0

Very thorough and explained everything that I needed to know

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February 20, 2025

5.0

Obviously very knowledgeable but also caring and pleasant. Took plenty of time to address all concerns.

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February 20, 2025

5.0

Answered all my questions

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February 19, 2025

5.0

Professional and knowledgeable

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February 19, 2025

5.0

She has examined me many times and knows what to check for on my body.

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February 19, 2025

5.0

She's the best!!!!! 30+ years

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February 18, 2025

5.0

I have a long history with Dr. Janss and have been happy with the care she has provided.

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February 18, 2025

5.0

respectful of time, takes time to get to know her patients in person, good assessment skills, follows up with patients as promised, impressive scope of knowledge, treatments in real time meet assessments of skin issues, good referrals as appropriate,

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February 18, 2025

5.0

I've been seeing Dr. Janss for 7+ years. She is friendly, knowledgeable, and takes her time to address any concerns.

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February 15, 2025

5.0

I'm very comfortable with Dr Janss and trust her with my care.

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February 13, 2025

5.0

She listens to my concerns and is very informative.

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February 04, 2025

5.0

Have been her patient for over 25 yrs. Never had any reason to look elsewhere.

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February 01, 2025

5.0

Dr. Janss gave me a thorough checkup and everything I needed to treat my condition. See above explanation.

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January 30, 2025

5.0

Dr. Janss is incredibly knowledgeable and, while being professional, shows a personal side that is charming. She remembers small items or comments from prior visits and uses them to put patients at ease and make them feel like they are not just a name on her schedule. She offers solutions and information in addition to her spot-on advice.

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January 30, 2025

5.0

She has a great personality very friendly and puts you at ease. She takes an interest in her patients and thoroughly explains everything. She also tells you where you can find additional information on the Northwestern app if any concerns come to mind

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January 28, 2025

5.0

Dr. Janss is pleasant, professional, and competent. All questions answered.

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January 22, 2025

5.0

Excellent doctor - very patient focused

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January 22, 2025

5.0

Great doctor

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January 21, 2025

5.0

He does his job very quickly and explains things well, he knows what he is doing. Very good experience.

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January 21, 2025

5.0

She explained my condition and her choice of treatment very clearly.

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January 16, 2025

5.0

Listens to concerns and offers reasonable solutions.

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January 15, 2025

5.0

Gerta is the best. Extremely knowledgable and takes the time to explain the the facts; What exactly the issue is and alternatives available to the client. Invaluable.

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January 15, 2025

5.0

Excellent care and personal understanding

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January 14, 2025

5.0

Long time relationship, very caring. Gives good advice. Keeps skin cancer at bay.

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January 09, 2025

5.0

knowledgable, friendly, attentive

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January 09, 2025

5.0

She helped me tremendously and she is very kind

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January 09, 2025

5.0

She is extremely knowledgeable and experienced. She is also very personable. So you get great care and a smile.

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January 09, 2025

5.0

Very kind and thorough. I did not feel rushed. Listened to my concerns.

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January 07, 2025

5.0

Dermatology requires her style of educated care,

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January 07, 2025

5.0

Dr. Janss is extremely knowledgeable and explains things clearly. Her nurse, Jennifer., is also very knowledgeable and patient.

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December 24, 2024

5.0

All good

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December 24, 2024

5.0

She is smart and cares about her patients.

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December 23, 2024

5.0

Excellent experience with everyone.

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December 21, 2024

5.0

She is very personable and thorough in her exam. She listens to your concerns and questions, explains things and doesn't rush.

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December 19, 2024

5.0

Dr Janss is Great! Always cheerful and exudes confidence. Takes the time to explainwhy and what she is doing.

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December 17, 2024

5.0

Dr. Janss is easy to talk to and listens to my concerns.

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December 14, 2024

5.0

Perfect

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December 10, 2024

5.0

Very professional and friendly.

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December 10, 2024

5.0

Dr. Janss is prompt, intelligent, expert and understanding. She always seems to know what is wrong and how to fix it.

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December 10, 2024

5.0

Great doctor

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December 08, 2024

5.0

Dr Janss was very kind and informative during my initial skin check. She took time to answer my questions and educate me on what to look for in regards to the different skin cancer types which are most commonly found. Her bedside manner was excellent and I was very much at ease during the examination

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December 05, 2024

5.0

Dr. Janss and her staff are so wonderful! Always very nice and professional and take such good care. I think the nurses name was Ulana...she thought of everything! Highly recommend.

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December 03, 2024

5.0

Excellent skills and care.

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December 03, 2024

5.0

Dr Janss is very professional. She listened to my concerns and offered great advice.

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November 27, 2024

5.0

She us knowledgeable and cares for the patient.

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November 21, 2024

5.0

friendly, compassionate, informative

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November 21, 2024

5.0

Confident in care given

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November 20, 2024

5.0

Very caring doc

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November 18, 2024

5.0

Dr Janss did a thorough skin exam and discussed my family history.

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November 18, 2024

5.0

See above. She has solved several skin problems for me, and is always reassuring and helpful with information and is very pleasant and personable!

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November 14, 2024

5.0

She really understands the patient and does great work and is a wonderful person In addition.

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November 14, 2024

5.0

Northwestern is very fortunate to have someone of her caliber.

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November 13, 2024

4.0

Dr. Janss had a pleasantly competent manner which was reassuring.

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Disclosures

Gerta S. Janss, 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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