Our Team

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


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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

  • Valerie Lynn Baker MD MPP

    • Director, Division of Reproductive Endocrinology and Infertility
    • Professor of Gynecology and Obstetrics

    Expertise: Reproductive Endocrinology and Infertility, Gynecology

  • Katie E. Cameron MD MBE

    • Assistant Professor of Gynecology and Obstetrics

    Expertise: Gynecology, Reproductive Endocrinology and Infertility

  • Kamaria C. Cayton MD

    • Assistant Professor of Gynecology and Obstetrics

    Expertise: Reproductive Endocrinology and Infertility, Gynecology

  • Chantel Cross MD

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

    Expertise: Reproductive Endocrinology and Infertility, Gynecology

  • Endrika Hinton MD

    • Assistant Professor of Gynecology and Obstetrics

    Expertise: Gynecology, Reproductive Endocrinology and Infertility

  • Pardis Hosseinzadeh MD MSC

    • Assistant Professor of Gynecology and Obstetrics

    Expertise: Gynecology, Reproductive Endocrinology and Infertility

  • Ziad Rafic Hubayter MD MPH

    • Assistant Professor of Gynecology and Obstetrics

    Expertise: Gynecology, Reproductive Endocrinology and Infertility

  • Vasiliki Moragianni MD MSC

    • Assistant Professor of Gynecology and Obstetrics

    Expertise: Reproductive Endocrinology and Infertility, Gynecology

  • James Segars MD

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

    Expertise: Reproductive Endocrinology and Infertility, Gynecology

  • Howard A. Zacur MD

    • Professor of Gynecology and Obstetrics

    Expertise: Gynecology, Reproductive Endocrinology and Infertility

Reproductive Endocrinology and Infertility Fellows

Abigail Combs, M.D.
Abigail Combs
Megan Gornet, M.D.
Megan Gornet, M.D.
Anita Madison, M.D.
Anita Madison
Kathryn Schmiech, M.D.
Kathryn Schmiech

Reproductive Endocrinology and Infertility Nurse Practitioners

Julie Luterzo, NP

REI Nurse Practitioner

Julie Luterzo

Ashley Shaffer, NP

REI Nurse Practitioner

Ashley Shaffer

Urologists

Amin Herati MD

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

Expertise: Urology

Michal Secker, FNP-C

Michal Secker FNP-C is a Nurse Practitioner at the James Buchanan Brady Urological Institute and works at the Johns Hopkins Hospital as well as the Greenspring Outpatient Center. She works collaboratively with Dr. Amin S. Herati, MD, the Director of Men's Health and Director of Male Infertility.

Michal Secker

IVF Nurses

  • Stephanie Bianco, MSN
  • Natasha Calleri, BSN, RN-OB
  • Jennifer Chavis, BSN
  • Jennifer Costello, MSN, Third Party Reproduction Coordinator
  • Megan Mallory, BSN, RNC
  • Audrey Moore, BSN
  • Shannon Sumner, MSN
  • Susan Taylor, BSN
  • Monicka Williams, BSN

Laboratory Director

Mark Paul David Dow PhD

  • REI Laboratory Director: Johns Hopkins Fertility Center
  • Assistant Professor of Gynecology and Obstetrics

Andrology/Endocrine/Embryology Team

  • Kathleen Broman, B.S.
  • Whitney Glenn, B.S.
  • Sarah Janney, B.S.
  • Samantha Keller, B.S.
  • Raunjae Payne, B.S.
  • Jossiemar Perez Horta, B.S., M.S.
  • Carolina Petrella, B.S.
  • Kayla Silva, B.S.
  • Sian Simeone, B.S., M.S.
  • Meaghan Yates, B.S.

Financial Counselors

  • Shardonnae Belin
  • Lisa Hartwig
  • Kirsten Perry
  • Makeda Williams

Support Staff

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