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Home > CA Providers > Obstetricians & Gynecologists: OB-GYNs

Dr. Cristina Hernandez Hernandez O'Day, MD

Accepting New Patients

(Cristina H. O'Day, MD)

(58 Ratings)

Specializes in: Obstetrics & Gynecology

Medical UC Irvine (2007)

Professional interests include: hysteroscopy, minimally invasive procedures, laparoscopic surgery, and more.

1140 West La Veta Avenue Suite 770
Orange, CA 92868

(714) 835-8715

Dr. Cristina Hernandez Hernandez O'Day, MD is an obstetrician and gynecologist in Orange, CA specializing in obstetrics & gynecology. She graduated from Medical UC Irvine in 2007 and has 18 years of experience. Dr. Cristina Hernandez Hernandez O'Day, MD is affiliated with St. Joseph Heritage Medical Group, Providence Medical Foundation and St. Joseph Heritage - Orange Obstetrics and Gynecology - Main St..

Office Locations

Address:

1140 West La Veta Avenue Suite 770
Orange, CA 92868

Address:

363 South Main Street Suite 345
Orange, CA 92868

Some issues Dr. Cristina Hernandez Hernandez O'Day, MD can help you with:

Hysteroscopy

A hysteroscopy is a diagnostic procedure performed to examine the inside of the uterus. A thin tube with a camera and light at the end, called a hysteroscope, is inserted through the vagina. It allows the physician to view the cervix and uterine walls. Sometimes, gas or liquid is used to expand the uterus and allow a better view. If necessary, tiny instruments can also be passed through the tube and used for certain procedures, such as taking a biopsy or removing a polyp.

Hysteroscopy is often done to figure out the cause of abnormal menstrual bleeding. However, it can also be used to:

Identify the cause of recurrent miscarriage
Remove polyps or fibroids, non-cancerous growths in the uterus
Remove adhesions, scar tissue within the uterus
Identify uterine septums, a wall of tissue dividing the uterus
Perform ablation, the removal of excess uterine lining

If surgery is necessary, hysteroscopy is often used along with laparoscopy, a kind of surgery performed through small incisions in the abdomen. Tiny tools are passed through the incisions, and the hysteroscope guides the doctors while surgery is performed.

Laparoscopic Surgery

Laparoscopic surgery is a kind of minimally invasive surgery using a thin, narrow tube called a laparoscope. Usually performed on the abdomen or the pelvic region, the surgeon makes a few very small incisions instead of one large one.

During the procedure, the surgeon inserts the laparoscope, which contains a light and camera that allows the surgeon to see what is happening inside the body. Then tiny tools are placed through the small openings and used to perform the surgery.

The most common laparoscopic surgery is gallbladder removal, but laparoscopic surgery may also be used for the removal of a kidney or appendix, to treat certain cysts and tumors, for bariatric surgery, for some GERD treatments, or for hernia repairs, among others.

Because laparoscopic surgery only uses a few tiny incisions, the scars are minimal and recovery is easier than with open surgery.

Robotic Surgery

Robotic surgery is a type of minimally invasive surgery, using a tiny opening to get inside the body instead of making a large cut. It uses small tools attached to a thin robotic arm, which is controlled by the surgeon. Robotic surgery may be referred to by the specific kind of robot that is used. The most advanced robot currently in use is called the da Vinci, and surgery using it is sometimes called da Vinci surgery.

There are many benefits to robotic surgery, both for the patient and the surgeon. Robotic surgery allows for more precise movements and increased control during very delicate surgical procedures. This makes performing surgery accurately much easier for surgeons and reduces fatigue. The smaller 'hand' of the robot can enter the body via a much smaller opening, which reduces the risk of infection and scarring and leads to a faster recovery. The robotic hands also contain tiny moveable cameras among their tools, giving surgeons a much closer view of the procedure than would be possible with traditional surgery.

doctor visit	7

**Gender**
Male	0
Female	24

**Age**
From 65 to 74	13
From 75 to 84	0
85 and over	0
Less than 65	0

Hypertension	54
High Cholesterol	0
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

**Gender**
Male	0
Female	24

**Age**
From 65 to 74	12
From 75 to 84	0
85 and over	0
Less than 65	0

Hypertension	58
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

**Gender**
Male	0
Female	64

**Age**
From 65 to 74	34
From 75 to 84	0
85 and over	0
Less than 65	0

Hypertension	63
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

breast exam	10
doctor visit	29
gynecologic procedures	10

**Gender**
Male	0
Female	44

**Ethnicity**
Non-Hispanic White	27
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	19
From 75 to 84	0
85 and over	0
Less than 65	0

Hypertension	70
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	25
Depression	0
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

breast exam	14
gynecologic procedures	14

**Gender**
Male	0
Female	35

**Ethnicity**
Non-Hispanic White	19
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	18
From 75 to 84	0
85 and over	0
Less than 65	0

Hypertension	63
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

breast exam	26
doctor visit	40
gynecologic procedures	26

**Gender**
Male	0
Female	61

**Ethnicity**
Non-Hispanic White	42
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	28
From 75 to 84	20
85 and over	0
Less than 65	0

Hypertension	46
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	20
Depression	21
Chronic Kidney Disease	20
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

breast exam	37
cytology	17
doctor visit	33
gynecologic pathology	17
gynecologic procedures	37
preventive care	17

**Gender**
Male	0
Female	86

**Ethnicity**
Non-Hispanic White	67
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	49
From 75 to 84	19
85 and over	0
Less than 65	0

Hypertension	51
High Cholesterol	41
Stroke	0
Ischemic Heart Disease	19
Depression	17
Chronic Kidney Disease	14
Asthma	0
Osteoperosis	16
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	14
Dementia	0
Cancer	0

breast exam	29
doctor visit	24
gynecologic procedures	29

**Gender**
Male	0
Female	64

**Ethnicity**
Non-Hispanic White	51
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	37
From 75 to 84	16
85 and over	0
Less than 65	0

Hypertension	52
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	22
Depression	27
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	23
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

breast exam	18
doctor visit	13
gynecologic procedures	18

Average Medicare Procedure Volume From 2013 - 2021

Volume of procedures performed by Dr. Cristina Hernandez Hernandez O'Day, MD for Medicare patients.

The highest averages for the top procedures that Dr. Cristina Hernandez Hernandez O'Day, MD treated as an obstetrician and gynecologist in Orange, CA were breast exam, gynecologic procedures, preventive care and cytology.

breast exam	22
cytology	17
doctor visit	26
gynecologic pathology	17
gynecologic procedures	22
preventive care	17

Average Medicare Patient Data From 2013 - 2021

Information about Medicare patients treated by Dr. Cristina Hernandez Hernandez O'Day, MD.

**Gender**
Female	40
Male	0

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	20
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
85 and over	0
75 to 84	5
Less than 65	0
65 to 74	21

Average of Total of Conditions of Medicare patients treated by Dr. Cristina Hernandez Hernandez O'Day, MD From 2013 - 2021

The highest averages of the most common conditions of Medicare patients that Dr. Cristina Hernandez Hernandez O'Day, MD treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	45
High Cholesterol	37
Stroke	0
Ischemic Heart Disease	8
Depression	6
Chronic Kidney Disease	8
Asthma	0
Osteoporosis	3
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	1
Atrial Fibrillation	0
Cancer	0
Dementia	0

Education & Training

Dr. Cristina Hernandez Hernandez O'Day, MD graduated from Medical UC Irvine in 2007. She completed residency at UC San Diego. She is certified by the American Board of Obstetrics and Gynecology, Obstetrics and Gynecology and has a state license in California.

Medical School: Medical UC Irvine (2007)

Residency: UC San Diego (2011)

Board Certification: American Board of Obstetrics and Gynecology, Obstetrics and Gynecology

Licensed In: California

Affiliations & Hospitals

Dr. Cristina Hernandez Hernandez O'Day, MD is associated with these hospitals and organizations:

St. Joseph Heritage Medical Group

Providence Medical Foundation

St. Joseph Heritage - Orange Obstetrics and Gynecology - Main St.

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Cristina Hernandez Hernandez O'Day, MD appears to accept the following insurance providers: Aetna PPO, Aetna HMO, Cigna PPO, Cigna HMO, Blue Shield of CA HMO, Multiplan PPO, Aetna Medicare Advantage HMO, HealthSmart (Interplan) PPO, United Healthcare Medicare Advantage, Health Net - TriCare, Anthem Blue Cross HMO, Choice /Humana PPO, Anthem Blue Cross PPO, Health Net PPO, Health Net HMO, Anthem Blue Cross Medicare PPO, Coventry/First Health PPO, United HealthCare PPO, United Healthcare HMO, US Family Health Plan - TriCare, Aetna Medicare Advantage PPO and Insurance Plan.

Insurance Accepted by Provider includes:

According to our sources, Dr. Cristina Hernandez Hernandez O'Day, MD accepts the following insurance providers:

Aetna PPO

Aetna HMO

Cigna PPO

Cigna HMO

Blue Shield of CA HMO

Multiplan PPO

Aetna Medicare Advantage HMO

HealthSmart (Interplan) PPO

United Healthcare Medicare Advantage

Health Net - TriCare

Anthem Blue Cross HMO

Choice /Humana PPO

Anthem Blue Cross PPO

Health Net PPO

Health Net HMO

Anthem Blue Cross Medicare PPO

Coventry/First Health PPO

United HealthCare PPO

United Healthcare HMO

US Family Health Plan - TriCare

Aetna Medicare Advantage PPO

Insurance Plan

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Ratings & Reviews

Dr. Cristina Hernandez Hernandez O'Day, MD has an exceptional overall rating with an average of 4.6 out of 5 stars based on 58 ratings. We collect ratings and reviews of Dr. Cristina Hernandez Hernandez O'Day, MD from all over the web to help you find the right in Orange, CA.

4.6

Overall Rating

(58 Ratings)

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General Payments

These charts describe general payments received by Dr. Cristina Hernandez Hernandez O'Day, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Intuitive Surgical, Inc.	$5,846 Da Vinci Surgical System $5,846
AbbVie, Inc.	$812 Orilissa $440	Lupron $276	Lupaneta $66	$30
AbbVie Inc.	$559 ORIAHNN $336	LO LOESTRIN FE $151	Orilissa $72
Smith & Nephew, Inc.	$527 GYN $527
Covidien LP	$490 TruClear $490
Other	$1,980 LO LOESTRIN FE $221	MENTOR MemoryGel Resterilizable Gel Sizer $122	Osphena $103	CitraNatal $98	NEXPLANON $89	Other $1,345

**Types of Payments**
Food and Beverage	$5,089
Travel and Lodging	$3,018
Education	$2,107

Biography

Dr. Cristina O'Day is an obstetrics & gynecology specialist. Dr. O'Day's average rating from her patients is 4.5 stars (out of 5). Her clinical interests encompass hysteroscopy, robotic surgery, and laparoscopic surgery. She takes Anthem, Blue California, and HealthSmart, in addition to other insurance carriers. She attended medical school at the University of California, Irvine, School of Medicine. For her professional training, Dr. O'Day completed a residency program at a hospital affiliated with the University of California, San Diego (UCSD). She speaks Spanish. She is professionally affiliated with St. Joseph Heritage Medical Group. Dr. O'Day has an open panel in Orange, CA according to Providence Medical Foundation.