About Me

Professional and Medical Interest

My clinical interest lies in oncologic surgery with a focus on melanoma and soft tissue sarcomas. I am also actively involved in basic science and translational research focusing on the signaling mechanisms determining cancer cell survival/stemness and is active in the development of clinical trials. I have a particular interests in surgical education and look forward to working to reduce the burden of cancer in our community by working with partners throughout the state and region.

How did you fall in love with your field?

My father is the only general surgeon in a small town in Louisiana. I was able to see the impact that he had on our community, particularly giving hope to our neighbors and friends with cancer. I sought out the education and training to provide even more effective treatments for patients with cancer. Additionally, I am passionate about partnering with others in reducing the burden of cancer in our community.

What are three things people may not know about you?

  • I am an Eagle Scout and still enjoy camping with my kids.
  • I love learning languages. Currently I am able to speak English, French (a bit rusty), and Malayalam. I am actively working on learning Spanish and Latin.
  • My favorite foods are crawfish etouffee and boiled crawfish (I did grow up in Cajun country!)

Services and treatments

Credentials

Medical School

Boston University, 1999

Fellowship

Research, University of Cincinnati College of Medicine, 2004

Residency

General Surgery, University of Cincinnati College of Medicine, 2007

Graduate Education

University of Cincinnati, 2009

Fellowship

Complex General Surgical Oncology, University of Texas - MD Anderson Cancer Center, 2009

Publications

See publications for Joshua Mammen, MD, PhD, FACS

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Locations

Fred & Pamela Buffett Cancer Center - Nebraska Medical Center
505 S 45th St. Omaha NE 68105 Get directions
Blood draws, Arm draw: Monday through Friday, 7 a.m. to 4 p.m.Port draw: Monday through Friday, 7 a.m. to 3:15 p.m. (Appointments are required for port draws.) 
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Insurance and Coverage

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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

  • Aug 22, 2026

    Dr Mammen is the best. I am so thankful he is my provider! I feel very well cared for!

  • Aug 15, 2026

    Dr. was excellent in explaining and giving options of treatment and answered questions without rushing to see others.

  • Aug 01, 2026

    All good Dr Mamman and staff all very polite and professional!

  • Jul 11, 2026

    Dr Mammen very much puts my mind at ease. His manner is positive, compassionate, intentional, direct, and highly competent. I am grateful to be in his care.

  • Jun 27, 2026

    Good

  • Jun 22, 2026

    He has a kind smile and good calm voice overall a trustworthy person you want as a doctor who does not sugar coat any thing.

  • Jun 13, 2026

    Very impressed with all personnel

  • May 30, 2026

    Very good

  • May 21, 2026

    Dr Mammen and his staff are wonderful. They just do things right!

  • May 03, 2026

    Dr. Mammen was fantastic. His energy and enthusiasm was infectious! I felt like I was getting the best from the best! His positive energy will definitely be helpful.

  • Apr 20, 2026

    Everyone treats you like you are their best friend.

  • Apr 04, 2026

    My doctor very professional and caring

  • Mar 14, 2026

    Drs. And Nurses were all very nice and helpful.

  • Feb 28, 2026

    Wonderful

  • Jan 24, 2026

    Very good

  • Jan 12, 2026

    Dr. Mammen is the best!

  • Dec 21, 2025

    Dr. Mammen is an exceptional communicator in addition to his equal gifts as a doctor. I could not be more happy with his care.

  • Nov 10, 2025

    Everyone treated me as family.

  • Oct 25, 2025

    Have referred Dr many times!!!

  • Oct 25, 2025

    Great

  • Oct 05, 2025

    Dr Mammen is the best. I was blessed to be assigned to him for my first appointment 4 years ago,

  • Sep 28, 2025

    Dr. was fantastic! Knowledgeable so caring and sincere.

  • Sep 24, 2025

    I have been under Dr. Mammen's care for over seven years now and hope that I never have to change doctors. He truly is the best.

  • Sep 22, 2025

    Everyone was friendly and helpful

  • Jul 12, 2025

    Dr Mammen is incredible.

  • Jun 22, 2025

    Excellent care

  • Jun 16, 2025

    Couldn't have asked for any better service.

  • May 19, 2025

    I couldn't ask for a better care team!

  • May 17, 2025

    Dr Joshua Mammen is an excellent doctor. He always seemed to tell me what I needed to hear and not what I wanted to hear. His compassion for my problem and how to treat it is top notch.

  • Apr 05, 2025

    He was very warm and welcoming. He really did listen to me

  • Apr 05, 2025

    Dr Mammen always the best!!!!

  • Jan 15, 2025

    Good

  • Dec 28, 2024

    I truly appreciate the care and concern the doctor showed my mother

  • Dec 16, 2024

    I am so blessed to have been placed in the hands of Dr. Mammen. He is the best!

  • Oct 05, 2024

    Dr Mammen is the best! I traveled from Kansas City to see him.

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