Meet the Chartrounds Team

Patricia Harrigan Hardenbergh, MD
Medical Director of Radiation Oncology, Shaw Regional Cancer Center, Edwards, Colorado, USA
Chartrounds Founder and Award recipient of the ASCO Conquer Cancer Foundation Improving Cancer Care Grant funded by Susan G. Komen for the Cure.

Patti  completed her residency in Radiation Oncology in 1996  at Harvard Medical School and subsequently taught and pursued cancer research while on faculty at Duke University Medical Center for several years.  Her career took on new challenges when she moved to a small community practice at Shaw Regional Caner Center in rural Edwards, Colorado. The experience of straddling the worlds of academic medicine and community practice gave her insight into the need for a bridge between the two. With the ASCO Improving Cancer Care Grant 2010 , she developed the web site to connect these 2 worlds in radiation oncology: sub-specialty academic practice and general practice in the community.

She has  made contributions to the published work on national guidelines on Partial Breast Irradiation and Hypofractionated Whole Breast Irradiation, and most recently guidelines on Post-Mastectomy Radiation Therapy.  She is author and c-author of over 50 peer-reviewed publications. 

She was elected to be the community physician's representative on the nominating committee for the ASTRO Board. Based on her contributions and significant service to ASTRO she received the ASTRO Fellows designation in 2017.  She has served as an examiner for the written and oral boards for the American Board of Radiology for several years. In 2017 she joined the Board of Trustees for the American Board of Radiology.

  Tyler Robin, MD, PhD
Chartrounds India Team

Tyler is a PGY-4 resident in radiation oncology at the University of Colorado Cancer Center. He is a native of the Chicago area, but has made Colorado home for the last 14 years. He graduated from Colorado College in Colorado Springs, CO, cum laude with a BA in biology with distinction. He then enrolled in the combined MD/PhD Medical Scientist Training Program at the University of Colorado Anschutz Medical Campus. In 2012, he completed a PhD in molecular biology focused on Ewing's sarcoma and breast cancer, and in 2014 graduated from the MD training program. Tyler has a long-standing interest in cancer research and clinical oncology, leading to his decision to pursue specialty training in radiation oncology. Tyler is actively involved in an array of research endeavors, involving big data, health services research, studying novel applications of radiation therapy, and clinical trial development.

Inspired by the Chartrounds mission to improve oncology care around the world, Tyler joined the Chartrounds team in 2017 and currently focuses his energy on the Chartrounds India site.

Stacey McMahon

Stacey McMahon joined Chartrounds in July 2010 to develop our reputation and increase membership. She brings 20 years of sales and marketing experience to the team and, equally important, a commitment to our mission of improving cancer care.

Stacey’s business background and experience are extensive. She was a top Account Executive at Infinium Software and has worked as a Major Account Sales Manager at Automatic Data Process and RPS. She is a partner at the Zanon Group, a sales consulting firm.

Stacey has developed sales training programs and leadership development training. In all of her work, her principles are consistent and clear: doing what is right for the common good, and doing it well.  Stacey graduated from Boston College School of Management.  

Kim Lyons-Mitchell, MLIS
Chartrounds Medical Librarian

Kim Mitchell began her education in biology and received her Bachelor of Arts in 1993 from the University of Texas at Austin. She received a Masters in Library and Information Science, graduating in 1998 from the University of Texas at Austin. She works closely with physicians to ensure that they have up-to-date medical information.  Kim is taking charge of editing and tagging the archives of Chartrounds sessions. They will have a librarian's touch of organization and indexing.


Andy Ball
Program Administrator; CFO; HIPPA CO
Andy has worked in healthcare administration for over 13 years. Doctors respect him for his tenacity and attention to details.  He graduated from Colorado State University in 1987 with a B.A.  After spending 3 years volunteering for Senator Robert Dole and Congressman Ben Nighthorse Campbell, he earned a Masters of Public Administration from the University of Colorado in 1993.  During his years in college and D.C., he always paid his bills as the sous chef in award winning restaurants in each town where he honed skills for cost-effectively implementing the ideas of his employers with the goal of impeccable customer service.  After several years traveling the U.S. as a legal analyst for law firms, Andy chose to settle down at a hospital that was constructing a cancer center.  Upon its opening, he was the Office Supervisor and Revenue Cycle Coordinator for 10 years. His latest goal is to make this grant program a user-friendly and valuable MOC resource to improve cancer care.
  Brigitta Gehl 
Administrator and Research Assistant
Brigitta graduated from the University of Rochester in New York in 2014 where she majored in Molecular Genetics and is currently completing her Masters in Public Health at George Washington University with a concentration in Global Health. She plans to pursue medical school and has a particular interest in pediatrics. Brigitta grew up in Vail, Colorado and enjoys playing volleyball, running, and working at the family bistro.