Subspecialty Certification is a voluntary process that board-certified OB-GYNs who wish to demonstrate advanced expertise in a specialized area of practice. It signifies to patients, employers, and professional peers that the physician has successfully undergone rigorous evaluation and testing to acquire the requisite skills. As of 2025, ABOG has 6,932 diplomates who hold one or more subspecialty certifications.

Board-certified OB-GYNs may become further specialized in the areas of:

• Complex Family Planning (CFP)
• Gynecologic Oncology (GYN ONC)
• Maternal-Fetal Medicine (MFM)
• Reproductive Endocrinology & Infertility (REI)
• Urogynecology & Reproductive Pelvic Surgery (URPS)

To help candidates navigate this process, the steps to achieve board certification in CFP, GYN ONC, MFM, REI, or URPS are outlined below.

To support you through each phase of the certification process, we’ve outlined key resources and requirements below. From eligibility criteria and deadlines to detailed guidance on each step, these links provide everything you need to navigate initial certification with confidence.

It is the candidate's responsibility to be aware of the current requirements for Subspecialty Certification. ABOG does not assume responsibility for notifying candidates of changing requirements for admissibility to any of its examinations or pending loss of eligibility. Candidates must meet the requirements published in the bulletin.