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Office
11818 Wilshire Blvd
Ste 300
Los Angeles, CA 90025Phone+1 310-828-4008Fax+1 310-828-3310
Education & Training
- University of Southern California/Los Angeles General Medical Center (USC/LA General)Fellowship, Endocrinology, Diabetes, and Metabolism, 1977 - 1979
- University of Texas Medical Branch HospitalsResidency, Obstetrics and Gynecology, 1974 - 1977
- University of Texas Medical Branch School of MedicineClass of 1974
Certifications & Licensure
- CA State Medical License 1977 - 2025
- TX State Medical License 1974 - 2025
- UT State Medical License 2008 - 2016
- American Board of Obstetrics and Gynecology Obstetrics & Gynecology
- American Board of Obstetrics and Gynecology Reproductive Endocrinology/Infertility
Awards, Honors, & Recognition
- America's Top Doctors Castle Connolly, 2002-2014
- Top Doctors:LA Area Castle Connolly, 2013
- Top Doctors:Southern California Castle Connolly, 2012
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Publications & Presentations
PubMed
- 122 citationsAge thresholds for changes in semen parameters in men.Bronte A. Stone, Allyse Alex, L.B. Werlin, Richard P. Marrs
Fertility and Sterility. 2013-10-01 - 87 citationsEffects of female and male smoking on success rates of IVF and gamete intra-Fallopian transferHillary Klonoff-Cohen, Loki Natarajan, Richard P. Marrs, Bill Yee
Human Reproduction. 2001-07-01 - 16 citationsSuccessful pregnancies from cryopreserved human embryos produced by in vitro fertilization.Richard P. Marrs, Joanne Brown, Fumihiko Sato, Tetsuji Ogawa, Bill Yee
American Journal of Obstetrics and Gynecology. 1987-06-01
Press Mentions
- Fertility Clinic Mix-up: How to Choose IVF CenterJuly 12th, 2019
- She Was 48 When She Became PregnantDecember 20th, 2017
Grant Support
- In Vitro Fertilization And Embryo TransferNational Center For Research Resources1985
Professional Memberships
- Fellow
- Member
- Member
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