Bitterroot General & Vascular Surgery

Bitterroot General & Vascular Surgery

1150 Westwood Drive
Suite C

Hamilton, MT 59840

Monday through Thursday: 8:30am-5:00pm
Friday: 8:30 to Noon

After Hours Call: MDMH Emergency Department at (406) 375-4800, and ask to have Dr. Ilgenfritz or the general surgeon on call paged.

Request An Appointment

Welcome to Bitterroot General and Vascular Surgery

Frederick M. Ilgenfritz, MD is a board certified general surgeon and Fellow of the American College of Surgeons. He is well trained in the diagnosis and management of a wide variety of congenital, infectious, malignant and benign diseases. He also has extensive knowledge of postoperative and critical care of patients. As a general surgeon his focus is on the abdominal organs, breast, neck peripheral arteries and veins, and skin and soft tissue.

Philosophy of Care

Surgical care involves the use of carefully planned surgical procedures to restore a person to the fullest health and function possible. Dr. Ilgenfritz believes that the autonomy and dignity of a patient are to be respected. Each person has a right to a full explanation of the nature of their illness and to participate in formulating a plan to treat it. The wishes of a patient and their family are to be respected, including their right to refuse care. Every patient has a right to expect competence, compassion, skill and confidentiality.

Surgical Services

  • Non-Invasive
  • Laparoscopy or Minimally Invasive Surgery
  • Invasive or Open Surgery
  • Colorectal
  • Inflammatory bowel diseases
  • Hernia Repair
  • Gallbladder
  • Appendix
  • Breast -Non-cosmetic breast surgery
  • Vascular Surgery
  • Wound Management

Surgery Center

As one of two on call general surgeons for the Marcus Daly Memorial Hospital Emergency Department, Dr. Ilgenfritz performs many emergency surgery procedures on critically ill or injured patients utilizing both invasive and minimally invasive surgical techniques.

Dr. Ilgenfritz is a member of the medical staff at MDMH. Your surgery will take place in a surgical suite inside the state-of-the-art Marcus Daly Surgical Center. The MDMH surgical team consists of highly competent professionals specializing in the surgical specialties offered. The Marcus Daly surgical team puts a high priority on your safety employing the use of best practices to help ensure positive outcomes. Marcus Daly Memorial Hospital is proud to state that the surgical site infection rate is extremely low with a rating of 0.88% compared to the national average of 2.1 to 7.1%.

Preparing to have Surgery?

Elective surgery gives the patients and family members time to prepare. Whether we are going in for surgery ourselves or taking our children to the operating room, preparation is essential. Preparing for surgery can involve physical, mental and even spiritual work, and can bring positive outcomes on all these levels.

Preparing for surgery includes four major areas:

  • Elective surgery - Confirm your surgeon, get questions answered and select surgery date
  • Preparing your body - if time permits increase stretching exercises and modify your diet by reducing processed foods and eating more protein and fiber.
  • Medications and Supplements - consult Dr. Ilgenfritz on the pre and post surgery medications and supplements recommended to increase wound healing and decrease pain.
  • Mental Preparation - learn how to relax, think positive, know what to expect post surgery and ask for help.

Meeting your expectations:

Dr. Fredrick Ilgenfritz, his office staff and the Marcus Daly Surgery Team work together to alleviate your concerns, make you comfortable and ensure you the best possible outcomes. This is the beginning of our team procedure, where your medical history is reviewed, instructions about your procedure are given, the documents are signed and your IV is started. Your certified registered anesthetists will also meet with you and your family here to answer any questions about your anesthesia. Your surgery will be performed at the Marcus Daly Surgical Center, 1200 Westwood Drive, Hamilton.

Please call Bitterroot General and Vascular Surgery at (406) 363-4574 should you become sick with a fever, cold, sore throat, flu or any other illness prior to surgery.

Request Appointment

Scheduling an appointment at Bitterroot General & Vascular Surgery is easy. Anyone can request an appointment. If a primary care physician referral is required, our appointment staff will advise you based on the information you provided on the request appointment form. Some insurers require referrals, or may have additional requirements for certain medical care. All appointments are prioritized on the basis of medical need.

Request an Appointment - Bitterroot General and Vascular Surgery

Send Request


  • All Valley High School & Middle School Male and Female Sports Physicals

    All male and female valley athletes in middle and high school are invited to the Marcus Daly Rehabilitation Center on Thursday, August 1st, or Wednesday, August 7 th from 6 ...

  • Darby Sports Physicals Are Coming to Your Town

    Sports Physical forms are available from doctors, coaches and in the links below. Parents must fill out & sign sports physical form & accompany their child at the ...

  • All Valley High School & Middle School Male and Female Sports Physicals

    All male and female valley athletes in middle and high school are invited to the Marcus Daly Rehabilitation Center on Thursday, August 1st, or Wednesday, August 7 th from 6 ...

  • Marcus Daly Hospice Volunteer Training

    Looking for a meaningful and valuable volunteer experience? Consider becoming a Marcus Daly Hospice Volunteer. Our comprehensive volunteer training program is about to begin. ...

  • Functional Strengthening Program

    The Functional Strengthening Program for Seniors is designed to teach older individuals in the community how to safely and effectively strengthen their muscles in order to ...

prev next

What Our Patients Say About Us

  • "Corvallis Family Practice- is the most amazing clinic! I am so very thankful for all the amazing people that make CFP possible-I have the most complete and total confidence in all of you-thanks so much."
    - Anonymous
  • "I have had very good Lab tests for over a year-nurse call to inform me the results and directions for change (if any) in meds and when to return for my next test. The lab tech does painless blood draw-always efficient (and) professional."
    - Anonymous
  • "Overall, I felt well cared for as a patient of Dr. Calderwood. This includes the entire staff. I have and always will recommend him to anyone who is looking for an optometrist."
    - Anonymous