Obstetrics & Gynecology (OB/GYN)

At St. Joseph Heritage Medical Group, we offer exceptional care for every stage of a woman’s life. If you're looking for prenatal care, our board-certified OB/GYNs specialize in helping ensure a healthy baby, while creating a warm and supportive environment for mom and dad. We also offer gynecology services for every age - whether that means prevention and wellness in your 20s, successfully navigating menopause in your 50s, or thriving in your 80s.

Our Obstetrics physicians are able to provide a vast array of services including:

  • Management of abnormal uterine bleeding
  • Pap smears and abnormal pap smear care
  • Comprehensive breast care
  • STD screenings
  • Hormone balancing including prescription of Bioidentical Hormone Therapy
  • Obstetric and prenatal care
  • Infertility
  • Vaginal bleeding
  • Minimally invasive surgery featuring da Vinci® robotics such as:
    • Incontinence
    • Endometrial Ablation
    • Laparoscopic Surgery
    • Hysterectomy

We're happy to partner with Orange County's finest hospitals.

  • St. Joseph Hospital
    • 24-hour-a-day labor and delivery physician on-site for quick response or emergency care
    • Center for Maternal Fetal Health to monitor expectant mothers who may be at risk of early delivery or other complications
    • Award winning Mother-Baby Assessment Center
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  • St. Jude Medical Center
    • Board certified obstetricians and experienced nurses create one of Southern California’s best settings
    • Spacious, private rooms to create the perfect setting for you and those close to you. Take a virtual tour.
    • For high-risk pregnancies, our Fetal Diagnostic Center offers the expertise of nationally-recognized perinatologists to consult with your obstetrician and help monitor your pregnancy.
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Our Providers

Our Provider

Cristina Hernandez O'Day, MD
Obstetrics and Gynecology
City:  Orange
4.8 out of 5

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Our Locations

Orange - N. Tustin Obstetrics and Gynecology

Orange - N. Tustin Obstetrics and Gynecology

Address
3111 N. Tustin St.
Suite 250
Orange, CA 92866
Hours

Mon - Fri: 9 a.m. - 5 p.m.

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Orange - 805 W. La Veta

Orange - 805 W. La Veta

Address
805 W. La Veta Ave.
Suite 101
Orange, CA 92869
Hours

Mon - Fri: 8:30 a.m. - 5 p.m.

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Orange - 845 W. La Veta

Orange - 845 W. La Veta

Address
845 W. La Veta Ave.
Suite 108
Orange, CA 92868
Hours

Mon - Fri: 9 a.m. - 5 p.m.

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Orange - Obstetrics/Gynecology - La Veta Ave. Suite 560

Orange - Obstetrics/Gynecology - La Veta Ave. Suite 560

Address
1140 W. La Veta Ave.
Suite 560
Orange, CA 92868
Hours

Mon - Fri: 8 a.m. - 5 p.m.

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Orange - Obstetrics/Gynecology - La Veta Ave. Suite 770

Orange - Obstetrics/Gynecology - La Veta Ave. Suite 770

Address
1140 W. La Veta Ave.
Suite 770
Orange, CA 92868
Hours

Mon - Fri: 9 a.m. - 5 p.m.

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Diamond Bar

Diamond Bar

Address
1514 S. Valley Vista Dr.

Diamond Bar, CA 91765
Hours

Mon - Thur: 7:30 a.m. - 6 p.m.
Fri: 7:30 a.m. - 5:30 p.m.
Lab: Mon - Fri: 7:30 a.m. - 4:45 p.m.

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Fullerton - Women's Health Center

Fullerton - Women's Health Center

Address
101 Laguna Road
Suite 100
Fullerton, CA 92835
Hours

Mon - Fri: 8 a.m. - 5 p.m.

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Yorba Linda - Imaging

Yorba Linda - Imaging

Address
4300 Rose Dr.

Yorba Linda, CA 92886
Hours

Monday - Friday
Lab: 6:30 a.m. - 5 p.m.

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