About Me

Services and treatments

Credentials

Board Certifications

Internal Medicine

Medical School

UNMC College of Medicine, 1996

Residency

Internal Medicine, University of Cincinnati College of Medicine, 1999

Locations

Internal Medicine Primary Care at Durham Outpatient Center
4400 Emile St. Omaha, NE 68105 Get directions
Monday through Friday , 8:00 a.m. to 5:00 p.m.  
View Location

Insurance and Coverage

View insurances accepted

Licensed to practice medicine in: Nebraska

This provider has met the requirements to practice medicine in these states. To schedule a telehealth visit with this provider, you must be physically located within one of these states.

Ratings

  • Sep 23, 2026

    As always, the Dr. was great. She is why we have come here for so many years.

  • Sep 23, 2026

    Once again, it's a great place

  • Sep 04, 2026

    Dr. Gallagher-Jansen is an excellent physician who knows my medical history well and takes very good care of my health.

  • Aug 31, 2026

    Never feel rushed. Dr. always explains in layman terms for me. Comfortable discussions.

  • Aug 18, 2026

    Dr. Jansen provides professional advice about my care and explains any appointment details clearly and understandable.

  • Jul 26, 2026

    It's always pleasant to see her. She gives all her attention & focus. The level of care is like a family.

  • Jul 21, 2026

    I've been with Dr. Gallagher Jansen for 20+ years. We love her!

  • Jul 19, 2026

    I appreciate Dr G-Jansen's style of listening-questioning-explaining and having a conversation. I feel she genuinely cares and attempts to understand you as a unique individual. I recognize from our discussions that she is also continuing to learn, keep updated in her professional field.

  • Jul 01, 2026

    I was told I'd get a treatment plan by the next day. But I did not. I still have not. This was a poor experience. She advised going back to my podiatrist outside of UNMC. She was very late and flustered when coming in the exam room. I think she Is a good person but did not help my condition at all.

  • Jun 22, 2026

    Good

  • Jun 09, 2026

    Dr Mary Gallagher Jansen and Colleen and her team are true assets to Nebraska Med they care, listen, and express true concern!!!

  • May 31, 2026

    Dr. Mary Gallagher Jensen treated me with care, respect and thoroughness.

  • May 22, 2026

    Dr.Gallagher Jansen is the best provider

  • May 04, 2026

    Dr. Gallagher is the best

  • Apr 26, 2026

    Good

  • Apr 22, 2026

    Dr Gallagher Jansen is the best doctor I've had in my 46.75 years of life. She's personable, friendly, listens, cares, and makes me feel very comfortable. She's thorough and definitely makes sure I have no concerns.

  • Apr 20, 2026

    Dr Jansen is someone I trust, is always focused on my health.

  • Apr 11, 2026

    Dr. Gallagher is always pleasant and smiling. She cares much for her patients.

  • Mar 22, 2026

    Dr Gallagher is kind, listens ...good doctor

  • Mar 06, 2026

    Dr Gallagher is the best doctor around

  • Mar 01, 2026

    Always asks questions and great advise

  • Feb 15, 2026

    I have the best doctor anyone could ever ask for

  • Feb 06, 2026

    I am amazed at all the personal information she remembers about me and takes that into consideration when caring for me

  • Jan 28, 2026

    As usual, everything went just fine.

  • Jan 21, 2026

    My Doctor is the best.

  • Jan 11, 2026

    Dr Mary Gallagher Jansen is wonderful!

  • Dec 03, 2025

    I like my doctor Mary Galergher Jansen she's absolutely wonderful and I enjoy her services.

  • Nov 22, 2025

    Dr treats me with care, kindness, and respect

  • Nov 19, 2025

    My Dr. G is Very Good!

  • Nov 13, 2025

    Dr. Gallagher is an excellent doctor. Beings there are new Dr's. in Plattsmouth, she's afraid I'll go to them -not a chance (unless it's a emergency) but you have to have appointments. As long as I'm healthy and can drive, Dr. Gallagher is my doctor. Period.

  • Nov 05, 2025

    I have been seeing Dr Gallagher Jansen for many years, and I wouldn't go to anyone else. She is caring and professional, she listens, asks questions and offers suggestions and solutions to your needs. She is the best !

  • Oct 17, 2025

    Dr. Gallagher is always perfect. She doesn't miss anything and always very efficient

  • Oct 10, 2025

    Love Dr Gallagher Jansen

  • Aug 31, 2025

    Pleased with service provided and was able to get a timely appointment.

  • Aug 31, 2025

    Dr. Gallagher always makes me feel very comfortable and is genuine in her concern for my health and well being. She is great.

  • Aug 08, 2025

    Dr Janssen is the best and very thorough. Mother is very comfortable with her

  • Aug 07, 2025

    Dr Gallagher is awesome. She is so nice, calm and just plain genuine. She listens, explains, and works with you. And I hadn't seen her in awhile and yet she remembered some personal details and inquired after them. I hate going to the doctor, but I really like and trust Dr. Gallagher.

  • Aug 06, 2025

    Dr Gallagher is the Best

  • Aug 03, 2025

    Their care is a blessing and gift to my life. 26 plus years and counting

  • Jul 27, 2025

    Dr. Gallagher is always very detailed addressing my symptoms. She goes over why It could or could not be something with the utmost concern. She cares deeply about her patients. She always checks my onechart to see what labs have been drawn and when. She never let's me forget if I'm overdue on something (like my mammogram) especially because my sister and grandma both had breast cancer. I can't say enough about what a blessing Dr. Gallagher has been to me. She has been my physician for 20 years. She is the most caring, investigated, passionate, and empathetic doctor I've ever experienced. She does all of that with integrity and doesn't sugarcoat your part as a patient. She looks at you as whole person (mentally and physically) not just an appointment. She's just AMAZING!!!

  • May 30, 2025

    Dr. Gallagher-Jansen is THE BEST!!!!

  • May 26, 2025

    Dr. Gallagher Jansen was thorough and professional as well as friendly and courteous.

  • Apr 30, 2025

    None finer

  • Apr 18, 2025

    Review and discussion of accomplishment; new plans for 2025 made, I enjoy participating.

  • Apr 13, 2025

    Dr MGJ is knowledgeable, warm and positive. Excellent and trustworthy physician!

  • Apr 12, 2025

    Dr Gallagher is among the best with patient interactions

  • Apr 06, 2025

    Dr. Gallagher has been my physician for many years. She is exceptional! During my visit she had a student with her. She involved the young gal in our whole discussion and made it a training opportunity. Great interaction!

  • Apr 05, 2025

    Excellent wellness visit

  • Mar 28, 2025

    Outstanding !!!

  • Mar 05, 2025

    Dr Jansen was great

  • Feb 28, 2025

    Dr. Gallagher Jansen is exceptional. She is always caring. She listens carefully. During this visit she went above and beyond to order a special test because she knew I had a concern. She consulted with others to insure the procedure was the correct one. I always leave feeling well cared for.

  • Feb 23, 2025

    Dr. Gallagher-Jansen is the best. It's obvious she cares a great deal.

  • Feb 16, 2025

    Good experience, I thought my doctor was very thorough which I like very much and very pleasant to talk to with.

  • Feb 05, 2025

    Dr. Gallagher-Jansen is amazing! As my primary care physician she Is so pleasant and easy to talk to. It makes talking about sensitive patient issues easier when the provider is friendly and open-minded. She always answers all of my questions, make doable suggestions and helps me keep tabs on my health concerns. For this visit she listened completely and found a solution I was comfortable with. She also respects my limited access to One Chart which is inclusive care.

  • Jan 31, 2025

    We just love Dr. Mary Gallagher Jensen. She is very caring and very thorough.

  • Jan 26, 2025

    Dr. Gallagher is wonderful and knowledgeable.

  • Jan 12, 2025

    Highly empathetic

  • Jan 10, 2025

    Doctor was thorough and spoke loud enough for me to hear.

  • Dec 29, 2024

    Dr. Gallagher truly cares about her patients. She has taken care of three generations in our family.

  • Dec 16, 2024

    She is an amazing doctor!!

  • Dec 08, 2024

    Great care provider!

  • Nov 29, 2024

    Mary Gallagher Jansen is one of the best doctors. She listens, is very thorough, and addresses health concerns immediately.

  • Nov 13, 2024

    Good

  • Nov 12, 2024

    Excellent

  • Nov 06, 2024

    Dr. Galligar is the best

  • Nov 06, 2024

    Love my doctor!! Dr Gallagher

  • Nov 03, 2024

    Dr. Gallagher always Listens and gives good explanations