Karl Hansen, M.D.

OU Reproductive Medicine

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Specialties - Reproductive Endocrinology & Infertility:

  • Assisted Reproductive Technologies, including IVF
  • Polycystic ovarian syndrome
  • Endometriosis
  • Reproductive surgery including tubal sterilization reversal
  • Uterine anomalies
  • Menstrual cycle abnormalities
  • Intrauterine insemination (including donor sperm)
  • Oocyte donation (donor egg)


  • State of Oklahoma, 1997-present

Board Certification:

  • Obstetrics & Gynecology, 2006 - present
  • Reproductive Endocrinology & Infertility, 2007 - present


  • Ph.D. degree in microbiology and immunology at University of Oklahoma, 1995
  • M.D. degree at University of Oklahoma, 1997
  • Residency in Obstetrics and Gynecology at University of Oklahoma (1997-2001)
  • Fellowship in Reproductive Endocrinology and Infertility at University of Washington (2001-2004)

Research Interests:

  • Reproductive aging
  • Ovarian reserve testing
  • IVF
  • Polycystic ovarian syndrome

Current Research:

  • Reproductive aging in premenopausal women


  • American College of Obstetricians & Gynecologists
  • American Society for Reproductive Medicine
  • American Medical Association
  • Society for Reproductive Endocrinology & Infertility
  • Society for Assisted Reproductive Technologies
  • Oklahoma State Medical Association
  • Alpha Omega Alpha

Honors (selected):

  • James A. Merrill Award, Dept. of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center (1996)
  • Alpha Omega Alpha, University of Oklahoma College of Medicine (1996)
  • Lloyd and Ruth Rader Trust Scholarship for outstanding residents (1999)
  • Administrative Chief Resident, University of Oklahoma Health Sciences Center, Dept. of Obstetrics and Gynecology (2000-2001)
  • First Place Junior Fellow Scientific Oral Presentation, ACOG District VII Annual Meeting, St. Louis, MO., Oct 2-4: Ovulation Induction with Metformin in Patients with Polycystic Ovarian Syndrome that Fail High-Dose Clomid. (2000)
  • APGO Excellence in Teaching Award, University of Oklahoma Health Sciences Center (2005)
  • Faculty Teaching Award, University of Oklahoma Department of Obstetrics and Gynecology (2005.2006,2007)
  • Prize Paper, ASRM 62nd Annual Meeting, New Orleans, LA., Oct 21-25: The Decline in Ovarian Non-Growing Follicle Number from Birth to Menopause: A New Model of Reproductive Aging. (2006)


Hansen, K.R., Morris, J.L., Thyer, A.C., and Soules, M.R., Reproductive Aging and Variability in the Ovarian Antral Follicle Count: Application in the Clinical Setting. Fertility and Sterility, 80(3), 577-583. 2003 Klein, N.A., Houmard, B.S., Hansen, K.R., Woodruff, T.K., Sluss, P.M., Verghese, T., Bremner, W.J., and Soules, M.R., Age-related Analysis of inhibin A, inhibin B, and activin A relative to the intercycle monotropic FSH rise in normal ovulatory women. J Clin Endocrinol Metab. 89(6), 2977-2981. 2004 Hansen, K.R., Thyer, A.C., Sluss, P.M., Bremner, W.J., Soules, M.R., and Klein, N.A., Reproductive aging and ovarian function-Is the early follicular phase FSH rise necessary to maintain adequate secretory function in older ovulatory women? Hum Reprod. 20(1), 89-95. 2005


OU Physicians Reproductive Medicine - Oklahoma City, OK