Our team of physicians, embryologists and nurses are all subspecialty-trained and leaders in the field of reproductive endocrinology.

The Johns Hopkins Standard of Care

At Johns Hopkins, our patients receive the highest level of care. Our experts receive additional training and undergo examinations to stay knowledgeable of the latest standards and innovation in gynecology and obstetrics. When you receive care at Johns Hopkins, you are in the hands of board-certified health care leaders who are recognized by the American Board of Obstetrics & Gynecology for their exceptional training.

Reproductive Endocrinologists

Sina Abhari, M.D.

Assistant Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Reproductive Endocrinology and Infertility

 

Valerie Lynn Baker, M.D.

Director, Division of Reproductive Endocrinology and Infertility
TeLinde-Wallach Professor of Gynecology and Obstetrics
Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Diminished Ovarian Reserve, Dysfunctional Uterine Bleeding, Fertility before and after Cancer Treatment, Fertility Preservation, In Vitro Fertilization, Infertility, Menopause, Ovarian Dysfunction, Polycystic Ovarian Syndrome (PCOS), Premature Ovarian Failure, Prolactin Disorders, Recurrent Pregnancy Loss, Reproductive Endocrinology

 

Katherine Elizabeth Cameron, M.D.

Assistant Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Diminished Ovarian Reserve, Fertility before and after Cancer Treatment, Fertility Preservation, In Vitro Fertilization, Infertility, Ovarian Dysfunction, Polycystic Ovarian Syndrome (PCOS), Premature Ovarian Failure, Recurrent Pregnancy Loss, Reproductive Endocrinology

 

Kamaria Cherise Cayton Vaught, M.D.

Assistant Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Obstetrics and Gynecology

 

Mindy Sue Christianson, M.D.

Medical Director, Johns Hopkins Fertility Center
Director, Fertility Preservation
Director, IVF Program Division of Reproductive Endocrinology & Infertility
Associate Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Adolescent Fertility Preservation, Endometriosis, Fertility before and after Cancer Treatment, Fibroids, In Vitro Fertilization, Infertility, Menopause, Pediatric- Ob/Gyn, Polycystic Ovarian Syndrome (PCOS), Reproductive Endocrinology

 

Chantel Ianthe Cross, M.D.

Associate Director, Reproductive Endocrinology and Infertility Fellowships
Director, Patient Education
Assistant Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Endometriosis, Fertility before and after Cancer Treatment, Fertility Preservation, Fibroids, In Vitro Fertilization, Infertility, Menopause, Polycystic Ovarian Syndrome (PCOS), Recurrent Pregnancy Loss, Reproductive Endocrinology

 

James Hugh Segars, Jr, M.D.

Director, Division of Reproductive Science and Women’s Health Research
Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Endometriosis, Infertility, Reproductive Endocrinology

 

Howard A Zacur, M.D., Ph.D.

Director, Reproductive Endocrinology and Infertility Fellowships
Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Dysfunctional Uterine Bleeding, Infertility, Menopause, Ovarian Dysfunction, Prolactin Disorders, Uterine Fibroids

 

Nurse Practitioner

Stefanie Nelson Tyler, DNP, WHNP-BC

Reproductive Endocrinology and Infertility Fellows

Urologists

Amin Sedaghat Herati, M.D.

Director of Male Infertility and Men’s Health
Assistant Professor of Urology
Assistant Professor of Gynecology and Obstetrics

Expertise, Disease and Conditions: Benign Prostatic Hyperplasia (BPH), Erectile Dysfunction, Low Testosterone, Male Infertility, Pelvic Pain, Peyronie's Disease, Vasectomy Reversal

 

IVF Nurses

• Stephanie Bianco, BSN, RN
• Kristy A. Cosme, BSN, RN-OB, C-EFM
• Jennifer Costello, MSN, RN, Third Party Reproduction Coordinator
• Sandra Grem BSN, RN
• Karen Lynch, BSN, RN
• Sarah O'Neill, MSN, RN, Nurse Manager
• Monicka Williams, BSN, RN

Laboratory Director

Mark P.D. Dow, Ph.D.

REI Laboratory Director: Johns Hopkins Fertility Center
Laboratory Director, Division of Reproductive Endocrinology and Infertility
Assistant Professor of Gynecology and Obstetrics

 

Embryologists

• Kathleen Broman, B.S.
• Samantha Keller, B.S.
• Kimberly Thrift, B.S., CLS (CG)
• Sian Simeone, B.S., M.S.

Andrologists

• Melissa Bartness, M.S.
• Carolina Petrella, B.S.

Financial Counselors

• Lisa Hartwig
• Kristen Larkin
• Makeda Williams

Support Staff

• Melony Heck, Administrative & Surgical Coordinator
• Jennifer Lake, Administrative & Surgical Coordinator