Cristina Hernandez O'Day, MD

Accepting New Patients
Offers Video Visits
363 South Main Street, Suite 345
Orange, CA 92868
1962.1 miles away
Medical Groups & Affiliations
This provider is part of the larger Providence network and you may be able to access providers, hospitals, and services with the following groups:
  • Mission Heritage Medical Group and Affiliated Physicians
  • St. Joseph Heritage Medical Group and Affiliated Physicians
  • St. Jude Heritage Medical Group and Affiliated Physicians
Speaks: Spanish and English
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St. Joesph Heritage - Orange Obstetrics and Gynecology - Main St.

363 South Main Street, Suite 345, Orange, CA 92868

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About Cristina Hernandez O'Day

Dr. Cristina Hernández O'Day ignites her practice with a fresh perspective and a deep passion for providing quality women's health services. She was delivered, taught and inspired by her father, Dr. Jesús Hernández. Dr. Cristina Hernández O'Day is bilingual with a dual Hispanic and Asian American cultural background.

Dr. Hernandez O'Day graduated Magna Cum Laude for her Bachelor of Science degree in Health Promotion and Disease Prevention from the University of Southern California, with minors in the Natural Sciences and Spanish. As a graduate of the University of California, Irvine Medical School, Dr. Hernández O'Day was elected to the prestigious Alpha Omega Alpha Honor Society for her excellence in scholarship and the highest ideals in the profession including ethical standards, dedication to serving others and leadership. She completed her residency at University of California San Diego with extensive training in minimally invasive surgery which minimizes patients scarring, pain and recovery time.

"I love the obgyn specialty because as a woman myself, I can relate to so many of my patients' concerns and I get to build a relationship and care for a patient throughout her lifetime. Pregnancy is especially rewarding because it is a privilege to be a part of a new little miracle of life."

– Dr. Cristina Hernández O'Day

College

University of Southern California
2003

Medical School

Medical UC Irvine
2007

Internship

UC San Diego
2010

Residency

UC San Diego
2011

Board Certifications
  • American Board of Obstetrics and Gynecology, Obstetrics and Gynecology
St. Joesph Heritage - Orange Obstetrics and Gynecology - Main St.
363 South Main Street, Suite 345
Orange, CA 92868

Medical Groups & Affiliations
St. Joseph Heritage Medical Group

Affiliated Locations
St. Joseph Hospital Gynecologic Oncology Program - Orange
St. Joseph Hospital Robotic Surgery Program - Orange
Providence St. Joseph Hospital - Orange

Clinical Interests

  • Abnormal Pap Smear
  • Abnormalities Of The Uterus
  • Adenocarcinoma In Situ Of The Cervix
  • Adnexal Mass
  • Amenorrhea
  • Anovulation
  • Anovulatory Bleeding
  • Antepartum And Postpartum Care
  • Asymptomatic Bacteriuria
  • Atrophic Vaginitis
  • Atypical Glandular Cells Of Undetermined Significance
  • Atypical Squamous Cells Of Undetermined Significance On Pap Smear
  • Bacterial Vaginosis
  • Bartholin Gland Cyst
  • Benign Breast Lump
  • Bladder Prolapse
  • Bladder Training
  • Bleeding During Intercourse
  • Breast Cancer Prevention And Risk Reduction
  • Breast Cancer Screening
  • Breast Examination
  • Breast Lump
  • Breastfeeding Problems
  • Cancer Related Sexual Concerns
  • Cervical Biopsy
  • Cervical Cap Fitting
  • Cervical Cerclage
  • Cervical Conization
  • Cervical Dysplasia
  • Cervical Funneling
  • Cervical Incompetence
  • Cervical Insufficiency
  • Cervical Intraepithelial Neoplasia
  • Cervical Length Assessment
  • Cervical Polyp
  • Cervicitis
  • Cesarean Section
  • Chlamydia
  • Cholestasis Of Pregnancy
  • Cold Knife Cone Biopsy Of Cervix
  • Colpocleisis
  • Colposcopy
  • Complete Uterovaginal Prolapse
  • Condylomata Acuminata
  • Cryotherapy Of The Cervix
  • Cystitis
  • Cystocele
  • Cystodynia
  • Decreased Libido
  • Dermoid Cyst
  • Detrusor Instability
  • Dilation And Curettage
  • Dysmenorrhea
  • Dyspareunia
  • Dysuria
  • Ectopic Pregnancy
  • Endometrial Ablation
  • Endometrial Biopsy
  • Endometrial Hyperplasia
  • Endometrioma
  • Endometriosis
  • Endometritis
  • Enterocele
  • Female Anorgasmia
  • Fetal Ultrasound
  • Fibrocystic Breast Changes
  • Fibroid Removal
  • Fibroids
  • First Trimester Screening
  • Follicular Cyst Of Ovary
  • Frequent Urinary Tract Infections
  • Galactocele
  • Genital Herpes, Female
  • Genital Herpes, Male
  • Genital Warts
  • Gonococcal Infection
  • Gynecologic Disorders Of Athletes
  • Gynecological Exam
  • Heavy Menstrual Bleeding
  • History Of Preterm Birth
  • Hot Flashes
  • Human Papilloma Virus (Hpv)
  • Hydrosalpinx
  • Hyperemesis
  • Hypertensive Disorders Of Pregnancy
  • Hysterectomy
  • Hysteroscopy
  • Imperforate Hymen
  • Incomplete Emptying Of Bladder
  • Incomplete Uterovaginal Prolapse
  • Interstitial Cystitis
  • Intrauterine Device (Iud) Placement
  • Irregular Menstruation
  • Labial Adhesions
  • Labor And Delivery
  • Laceration Of Vagina
  • Lactation Disorders
  • Lactation Support
  • Leiomyoma
  • Lichen Sclerosis
  • Loop Electrosurgical Excision Procedure
  • Mastitis
  • Mastodynia
  • Maternal Obesity
  • Menometrorrhagia
  • Menopause
  • Menorrhagia
  • Menstrual Disorders
  • Menstrual Disorders In Athletes
  • Menstrual Migraines
  • Menstruation
  • Minimally Invasive Gynecologic Surgery
  • Missed Periods
  • Morning Sickness
  • Multiple Gestations
  • Natural Birth
  • Nausea Of Pregnancy
  • Obliteration Of Vaginal Vault
  • Oligomenorrhea
  • Oophorectomy
  • Ovarian Cyst
  • Ovarian Cystectomy
  • Ovarian Endometriosis
  • Ovarian Failure
  • Ovarian Mass
  • Ovarian Torsion
  • Overflow Incontinence Of Urine
  • Pap Smear
  • Paratubal Cyst
  • Partial Hysterectomy
  • Pelvic Abscess
  • Pelvic Adhesions
  • Pelvic Floor Dysfunction
  • Pelvic Floor Exercise
  • Pelvic Inflammatory Disease
  • Pelvic Mass
  • Pelvic Organ Prolapse
  • Pelvic Pain
  • Pelvic Varicose Veins
  • Perimenopause
  • Perinatal Mental Health
  • Perinatal Mental Health Disorders
  • Perinatal Mood Disorders
  • Personal History Of Stillbirth
  • Polycystic Ovary Syndrome
  • Post Partum Check Up
  • Postcoital Bleeding
  • Postmenopausal Bleeding
  • Postpartum Care
  • Postpartum Depression
  • Postpartum Mastitis
  • Postpartum Thyroiditis
  • Preconception Counseling
  • Preeclampsia
  • Pregnancy
  • Pregnancy Counseling
  • Premature Ovarian Failure
  • Premenstrual Dysphoric Disorder
  • Premenstrual Syndrome (Pms)
  • Prenatal Care
  • Prenatal Diagnosis
  • Prenatal Testing
  • Prenatal Ultrasound Scan
  • Preterm Labor
  • Preterm Premature Rupture Of Membranes
  • Primary Ovarian Insufficiency
  • Prophylactic Oophorectomy
  • Pruritic Urticarial Papules And Plaques Of Pregancy (Pupp)
  • Pudendal Neuralgia
  • Rectocele
  • Rectovaginal Fistula
  • Recurrent Pregnancy Loss
  • Recurrent Urinary Tract Infection
  • Repair Of Cystocele
  • Repair Of Pelvic Prolapse
  • Repair Of Rectocele
  • Rh Incompatibility
  • Routine Gynecological Care
  • Salpingo Oophoritis
  • Secondary Amenorrhea
  • Septate Hymen
  • Sexually Transmitted Disease (Std)
  • Shortened Cervix
  • Squamous Intraepithelial Neoplasia
  • Stress Incontinence
  • Third Degree Uterine Prolapse
  • Tubo Ovarian Abscess
  • Urge Incontinence
  • Urinary Incontinence
  • Urinary Stress Incontinence
  • Uterine Anomaly In Pregnancy
  • Uterine Bleeding
  • Uterine Fibroid Embolization Counseling
  • Uterine Myoma
  • Uterine Polyp
  • Uterine Prolapse
  • Uterine Surgery
  • Vaginal Abscess
  • Vaginal Atrophy
  • Vaginal Biopsy
  • Vaginal Birth After Caesarean Section
  • Vaginal Bleeding
  • Vaginal Bleeding After Hysterectomy
  • Vaginal Candidiasis
  • Vaginal Delivery
  • Vaginal Hysterectomy
  • Vaginal Infections
  • Vaginal Intraepithelial Neoplasia
  • Vaginal Irritation
  • Vaginal Prolapse
  • Vaginismus
  • Vaginitis
  • Vestibulitis
  • Vulvar Abscess
  • Vulvar Disease
  • Vulvar Dysplasia
  • Vulvar Vestibulitis
  • Vulvodynia
  • Vulvovaginitis
  • Well Woman Visit
  • Women's Health