Dr. Althea O’Shaughnessy

Dr. Althea O’Shaughnessy, MD, FACOG

Dr. Althea O’Shaughnessy's CV

Dr. Althea O’Shaughnessy is board certified in both Obstetrics & Gynecology and Reproductive Endocrinology & Infertility. She obtained her B.S. degree from Trinity College, before achieving her M.D. from the University of Rochester School of Medicine & Dentistry. She completed her OBGYN residency at the University of Connecticut Health Center, followed by a fellowship in Reproductive Endocrinology at Downstate Medical Center in New York. She has been practicing in Reproductive Endocrinology & Infertility since 1988 at impressive facilities such as Mount Sinai Hospital, Cooper Center for IVF in New Jersey, and Sher Institute for Reproductive Medicine in New York. She was also the Medical Director of the Princeton Center for Infertility & Reproductive Medicine for 20 years. Dr. O’Shaughnessy specializes in IVF, endometriosis, laparoscopic and robotic surgery, hirsutism, and fertility preservation.

Dr. O’Shaughnessy has been long-recognized by her peers and her patients for her outstanding dedication. She has been recognized for her work in reproductive endocrinology as “Best in Medicine” by the American Health Council in 2019. She received the Castle Connolly Top Doctor Award in 2010, 2011, 2012, 2013, 2014, 2015, and 2017. Dr. O’Shaughnessy began publishing and presenting her reproductive medicine findings in 1986, and has over 40 papers and presentations to her credit.

Dr. O’Shaughnessy is a New York native who recently relocated to Colorado. She is married with 2 children. Dr. O’Shaughnessy enjoys pilates and tap dancing. She is looking forward to exploring Colorado’s beauty through skiing, road biking, and hiking!!!

Patient Testimonials

We are forever grateful!

Dr. O’Shaughnessy has many years of experience and it showed throughout our time at Conceptions. Thanks to the continued support of Dr. O’Shaughnessy, all of the exceptional nursing staff, amazing sonographers, and all of the wonderful employees at Conceptions we were able to be successful! We could not have done this without Dr. O’Shaughnessy’s knowledge, guidance and encouragement. We are so thankful to everyone at Conceptions who contributed to our journey. Thank you again, we are forever grateful!

Kristine G

Worth it!

We are so very grateful to Dr. O’Shaughnessy and the Conceptions Staff. Thank you for making our journey so comforting and special. Every appointment and every shot was worth it! I can’t imagine life without our boy.

The Calderon Family

She can make it happen!

Dr. Althea O’Shaughnessy and her team are the best. They have helped me accomplish a dream of mine and have made it reality. I will forever be thankful ! For everyone out there that desires what I do she can make it happen!


Confident and focused

The staff at Conceptions was phenomenal! They were helpful with checking insurance coverage, provided us with an outline of our IVF journey, and they treated us as more than just a number. Dr. O'Shaughnessy was our doctor for the transfer and we felt very comfortable with her. She is confident and focused. We enjoyed our experiences with the staff in the lab, during the egg extraction, during ultrasounds, and for our transfer. They have impressive equipment and are worth the cost. We are happy to say we got pregnant on our first round of IVF. Thank you for everything Conceptions!

Mary Beth M.

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