CalvertHealth Obstetrics & Gynecology

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Location & Phone
Our Providers
Barbara K. Estes, MD
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Hilary Ginter, MD, FACOG
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Michelle Johnson, MD, FACOG
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Aparajita Mahata, MD, FACOG
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Mitra Nassiraee, MD
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Deborah Davis, WHNP-BC
Nurse Practitioner
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Related Links
Prenatal Registration
You may use this online form to register at the CalvertHealth Center For Family Birth Care.

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Classes & Events
*Upon completion of this course participants will earn a course completion card. This is not a certification card. If a certification card is required one of the other CPR classes we offer may better meet your needs.

About CalvertHealth OB/GYN

CalvertHealth OB/GYN is dedicated to the health and well-being of women of all ages. We offer the full range of adult and adolescent gynecological care as well as complete obstetric care, including the management of high-risk pregnancies.

Our team of physicians is experienced in treating a wide range of women’s health issues:

Reproductive and Pelvic Health

  • Abnormal uterine bleeding
  • Chronic pelvic pain
  • Endometriosis
  • Fibroids
  • Menopause and perimenopause issues
  • Menstrual disorders
  • Pelvic Organ Prolapse
  • Polycystic ovarian syndrome (PCOS)
  • Premenstrual Syndrome

Breast Cancer Screening

Gynecologic Cancer
Screening and Evaluation

  • Cervical
  • Ovarian
  • Uterine
  • Vaginal
  • Vulvar

Obstetric Health

  • Pregnancy planning
  • Prenatal care
  • Obstetrical ultrasound and screening tests
  • High risk preganancy
  • Management of medical complications of pregnancy
  • Pre-eclampsia and eclampsia
  • Gestational diabetes
  • Vaginal and surgical delivery
  • Management of postpartum issues including hemorrhage and depression


  • Birth control pills
  • IUD insertion and removal
  • Birth control patch
  • Nexplanon insertion and removal


Preventative Care and Well-woman Visits

In addition, our physicians are experienced in advanced gynecological surgery techniques, including open and minimally invasive laparoscopic procedures for hysterectomy, hysteroscopy and endometrial ablation.

Our OB providers are the only physicians with privileges to deliver at the CalvertHealth Center for Family Birth Care.