cEnter Of Excellence

Mountain Blue Cancer Care Center does have a  division that conducts clinical trials for cancer treatment, exploring “cutting edge” treatments for cancer.

There are a number of trials for many cancer types available. If you would like to get more information on the clinical trials available, please call Mountain Blue Cancer Center at 303-953-7400.


The Mountain Blue Difference
If you’ve been diagnosed with cancer, it’s important to know your options.


At Mountain Blue Cancer Care Center we certainly share in our patient’s goals: Live longer and better. To reach these goals, we implement strategies that are unique and proven to be successful.


For certain cancers, especially those at more advanced stages, the conventional treatment protocol is to use a combination of chemotherapy drugs that is “as aggressive as the patient can tolerate.” Although this strategy brought marginal improvement in survival, the quality of life and cost of treatment is less than optimal.


At Mountain Blue Cancer Care, our approach is precise, targeted, effective, yet compatible with our patients’ needs for a quality living. Our integrative care begins with advanced global genomic tumor assessment to learn what is driving the growth of your cancer. As a result, treatments are more individualized, more precise, less toxic and highly effective. Cancer is dynamic and so are we.


As you navigate through our website, you will see specific examples of our treatment philosophy. You will read testimonials from our patients. And you will learn how our approach to treating four of the most common cancers—breast, lung, gastrointestinal and pancreatic—has resulted in a level of outcome success that far exceeds the national average.


You have a choice as to where to receive your cancer treatment. And it may be the most important choice of your life.

The Mountain Blue Difference

Initial Consultation

One of the promises we make and work very hard to keep is that of convenience. We know this is a stressful time and do our best to help ease that burden. 

Our Team

We make a difference in lives everyday.

Genomic Tumor Assesment

Genomic testing—not to be confused with genetic testing—looks for variations within genetic material, such as in a tissue sample taken from a tumor. The process, called Next Generation Sequencing or NGS, can identify which variations may be treated with molecular therapy.

Experience matters

Simply using genomic tumor assessment in

practice is not enough; the oncologist must

have the experience to know how to use the

information for themaximum benefit of
the patient. 

Customized Treatments

At Mountain Blue Cancer Care, we are confident that you will receive the utmost attention and exceptional care…a treatment philosophy that cannot always be practiced at large hospitals and medical centers.

Complementary Therapies

We firmly believe that complementary therapies can help you manage physical symptoms and enhance your emotional well-being. Learn about the complementary therapies that are offered at, or available through, our center.



Samir E. Witta, MD, PhD

Our Doctors:

Dr. Witta believes that patients with cancer should be able to receive the most advanced treatments in a very comfortable settings and with very personalized care that is respectful of their and their families’ needs and wishes, and brings either a cure or an improvement in quality of life.

With doctorates in both Genetics and Medicine, Dr. Witta offers the patients in his care a dual advantage as they fight cancer. He has collaborated with physicians, specialists locally and at the nation’s leading institutions in his 20-plus years of practice, working to develop tumor-specific treatments for better outcomes and fewer side effects.

Dr. Witta earned his PhD in Genetics from the National Institutes of Health in Bethesda, Maryland, his MD from Charles University, the oldest University in Central Europe and received his fellowship in hematology and oncology at the University of Colorado. He is board certified in Medical Oncology and Internal Medicine, and continues to publish in leading medical journals.


Voted 5280 Top Doc for three years.

David R. Trevarthen, MD

Dr. Trevarthen has been practicing Medical Oncology, and Hematology in the Denver area for over 30 years. With his many years of practice, he has extensive experience in treating all types of cancer. He does have particular interest in treating lung cancer, complex GI cancers, such as pancreatic cancer, head and neck cancer, and melanoma. He has been instrumental in developing centers of excellence for these cancers at Swedish Hospital.

Dr. Trevarthen also is passionate about cancer research, and is a principal investigator on many clinical trials for cancer. He has published scholarly papers on some of the clinical trials he has been involved with.

In his free time,when not working with cancer patients , other personal passions, include performing music, boating, and fly fishing.

Molly Burns, PA

Molly Burns is an outdoor enthusiast and relationship driven Physician Assistant. She was born and raised in a small farm town outside of West Chester, PA. For her undergraduate education she attended the University of Colorado Boulder where fell in love with the Rocky Mountains. She completed her Physician Assistant degree at Pacific University near Portland, OR. 


She is overjoyed to call Colorado home and to be a member of the Mountain Blue team. She is a fully licensed Physician Assistant and authorized by the DEA to prescribe all medications. Molly looks forward to building strong foundations, advocating for patients, and has a caring approach to medicine. 


Outside of medicine Molly finds joy in travel, yoga, powder days on the ski slopes and spending time with loved ones. 



We met Dr. Witta two days after the initial scan, even before the actual diagnosis. Within 3 days of that visit, we had a plan. Within a week the treatment started. We'd be lost without them. The entire staff is compassionate, knowledgeable. We thank God for them.

Love Dr. Witta and all the staff. Highly recommend Mountain Blue Cancer Care. If you have to go through cancer, this is the place to go.

"Dr. Witta has bee my Doctor for nine year. He and his staff have give me excellent care."

Dorothy J.

Pat C.

Maryann S



Our Address, Two Locations

Golden Office

400 Indiana St, Suite 270 • Golden, CO 80401

Swedish Hospital Campus:

Mountain Blue Cancer Care Center

799 E Hampden Ave #500, Englewood, CO 80113

Call Now: 303.953.7400

Opening Hours

Monday – Friday  9AM – 7PM

Saturday    9AM – 2PM


  • Grey Facebook Icon
  • Grey G+ Icon

© 2020 Mountain Blue Cancer Care Center