doctor cassandra roeca shady grove fertility colorado

Cassandra Roeca, M.D.

Board Certified Board Certified

  • Obstetrics and Gynecology
  • Reproductive Endocrinology and Infertility
Patient Testimonial
Dr. Libby was just amazing. We had a long journey and she was right there with us in the trenches. She was our third fertility doctor. She thought outside the box, was willing to try new things, was open to our questions, and used her team to help us.

I went through IVF with Dr. Humm. I felt heard, comforted, and comfortable the whole way. The support staff were beyond fantastic and turned what would have been a scary experience, into something that my husband and I never felt like we were navigating alone.

Dr. Libby listened to our every concern and communicated with us when we needed it, never making us feel pushed to the side or that she was to busy to be there for us.

From the first consultation until our final appointment Dr. Doyle was empathetic, compassionate, and very easy to talk to. He reviewed my diagnosis and treatments each step of the way and changed our protocols accordingly to result in a positive and viable pregnancy.

I had an ultrasound and an HSG done at the Norfolk office. Every staff member was amazing – so gentle, comforting and supportive. I’m very grateful for that.

Dr. Banks is attentive, kind, and professional. She answered all of our questions.


Cassandra Roeca, M.D., earned her medical degree from the University of Colorado School of Medicine. She then started her postdoctoral training at Harvard Medical School, Brigham and Women’s Hospital/Massachusetts General Hospital to complete residency in Obstetrics and Gynecology. It was there that Dr. Roeca was awarded the Eman and Goldstein Pediatric Gynecology Award. A Colorado native, Dr. Roeca returned to the University of Colorado School of Medicine, Anschutz Medical Campus where she completed her fellowship in Reproductive Endocrinology and Infertility (REI).

Dr. Roeca is board certified in obstetrics and gynecology and reproductive endocrinology and infertility. Dr. Roeca is passionate about fertility preservation in patients with cancer or medical diagnoses that place them at risk of infertility. Dr. Roeca is interested in researching solutions to help patients overcome infertility hurdles and fulfill their dreams of having a healthy baby. She is also an advocate for improving access to fertility services.

An avid researcher, Dr. Roeca has authored several peer-reviewed publications on topics such as preimplantation genetic testing, fertility preservation, menopause and in vitro fertilization, as well as contributed to an article on ovulation. Her degree in molecular, cellular, and developmental biology, influences her expertise in the diagnosis and treatment of infertility for patients with cancer, genetically linked mutations, and transmitted diseases.

Dr. Roeca is a member of several professional organizations, including the American Congress of Obstetricians and Gynecologists (ACOG), American Medical Association, American Society for Reproductive Medicine (ASRM), and Society for Reproductive Endocrinology and Infertility (SREI). She has also presented her research on birth outcomes, placental function and in vitro fertilization at several national meetings.

Dr. Roeca sees patients at SGF Colorado’s Denver location. In her free time, you can find Dr. Roeca enjoying the Colorado mountains with her husband and three children as well as playing music.

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  • Residency: Obstetrics and Gynecology, Harvard Medical School, Brigham and Women’s Hospital/Massachusetts General Hospital
  • Fellowship: Reproductive Endocrinology and Infertility, University of Colorado School of Medicine, Anschutz Medical Campus
  • Eman and Goldstein Pediatric Gynecology Award, Brigham and Women’s/Boston Children’s Hospital
  • President’s Presenter’s Award, Society of Reproductive Investigation
  • Coroporate Member Counsel In-Training Travel Award, American Soceity for Reproductive Medicine
  • Colorado Fertility Advocates – Board Member
  • American Congress of Obstetricians & Gynecologists
  • American Society for Reproductive Medicine
  • Society for Reproductive Endocrinology and Infertility
  • American Medical Association
  • Oncofertility Consortium

Coming Soon!


As a young girl I was taught many baseless things about contraception and reproduction, so to better educate myself, I pursued the study of developmental biology as an undergraduate where I was introduced to hormone function and embryonic development. During my medical training, reproductive endocrinology became a natural path to follow based on my interest in reproductive health. As I cared for more infertility patients, I became passionate about finding and researching solutions to help patients have a healthy baby. I am thankful my path led me to become a reproductive endocrinologist because I am not sure there is a more rewarding job than helping people build their families.

Listening to my patients and their experience is the single most important thing I can do to understand why someone is struggling. It is important to me that my patients feel heard. This provides a basis for trust, mutual respect, and shared decision making so, together, we can effectively help them achieve their reproductive goals.

I am always inspired by my patients. Their willingness to be emotionally vulnerable about their most personal experiences in my office is inspiring. I see strong people every day in my office who are walking a long, difficult path and display such tenacity and courage; I am inspired daily to go above and beyond to help my patients achieve their reproductive goals.

SGF is known as a pioneer in many ways, shown through their commitment to research, innovation, collaboration, and education. I’m proud to be a part of a practice of this caliber, home to award-winning physicians who continuously and safely push the envelope and offer the very finest in care.

My mom is my biggest inspiration. She immigrated to the U.S. from Guatemala after high school. Despite her interest in science, where she was raised prevented her from pursuing medicine as a female. My mom eventually became a nutritionist and dietician and raised me to understand that how we nourish our bodies is a form of medicine, too. She always fostered my love of science and has remained a constant inspiration to never take my opportunities for granted.

I love spending time with my husband and our three children. We are avid skiers and go to the mountains often. We enjoy seeing extended family whenever we can. I also enjoy being active outdoors, dinner parties with friends, and playing music.

I am charismatic, compassionate, and inquisitive. I tend to see the glass as “half full” but am also pragmatic.

I raced in triathlon collegiate national championships as an undergraduate.

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