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Fellowship in Reproductive Endocrinology

The University of Colorado's Fellowship in Reproductive Endocrinology is designed to provide a balanced educational experience for all fellows. The structure of this fellowship program emphasizes diverse opportunity and maximum flexibility to accommodate the interests and needs of each fellow. There is formal educational experience in associated disciplines such as medical endocrinology, pediatric endocrinology, male infertility and microsurgery, and ultrasonography. Fellows will have extensive and supervised experience in the broad clinical practice of reproductive endocrinology and infertility. The fellowship is ACGME accredited​. 


The fellowship also provides a graduated and structured research experience which has the potential to be either in clinical or basic science areas. Formal and ongoing research mentorship is provided b y both reproductive endocrinologists in the Division as well as basic scientists in the Division of Basic Reproductive Science in our Department.


Structural didactic conferences including REI case conferences are held on a weekly basis, and the fellow's schedules in all years will prioritize these conferences over service responsibilities. The first year of fellowship will focus on clinical experience in reproductive endocrinology as well as associated disciplines such as medical endocrinology. Fellows will be exposed to research conferences and will participate in ongoing dialogue to help develop a research thesis.


The second year will be 90% protected for research with the anticipation that the fellow will complete much of the work required for the thesis project during this year. In the second year formal courses are required in biostatistics as well as molecular biology; additional courses are available to fellows depending on their customized program. The third year will include 60% protected time which may be used to promote the research goals of the fellow.

Application Requirements 

For the 2021 Fellowship, we will be requiring an ERAS application, and CREOG scores. The CREOG scores need to be emailed to Please state in your email you are applying for Reproductive Endocrinology and Infertility Fellowship.

Please ensure you registered with NRMP in order to apply:

For additional questions please contact: 

Amanda Rivers, MBA 
Fellowship Coordinator 
12631 East 17th Avenue 
Room 4011, B198-6 
Aurora, CO 80045 
Phone: (303) 724-2014 
Fax: (303) 724-2055 ​

Current Fellows

Cassie Roeca, MD
Class of 2020
Residency: Brigham and Women's Hospital

Thanh Luu, MD
Class of 2021
Residency: Cleveland Clinic

John Rushing, MD
Class of 2022
Residency: University of Mississippi Medical Center

Alumni Fellows


Isiah Harris, MD

Brigham and Women's Hospital


Lauren Roth, MD

University of Colorado


Sahar Stephens, MD

Washington University


Zain Al-Safi, MD

Wayne State U​niversity


Gosia Skaznik-Wikiel, MD Cleveland Clinic
​2017 ​Natalia Grindler, MD ​Washington University
​2018 ​Jessie Bauer, MD ​Mount Sinai Beth Israel​
​2019 ​Sara Babcock Gilbert, MD ​University of Colorado