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Dr. G. Thomas Ruiz, MD

Fountain Valley, CA

30 Years of Experience

Accepting patients

    Who is Dr. Ruiz, Obstetrician / Gynecologist (OBGYN) in Fountain Valley, CA?

    Dr. G. Thomas Ruiz, MD is an Obstetrician / Gynecologist (OBGYN), who primarily practices in Fountain Valley, CA with 2 additional practice locations. He has been practicing for over 30 years and is board certified. Dr. Ruiz completed his residency at White Mem Med Center. Dr. Ruiz is fluent in English and Spanish, and is currently seeing new patients. Dr. Ruiz’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Ruiz’s office at (657) 241-9090.

    Where did Dr. Ruiz go to medical school and complete their residency?

    • Residency: White Mem Med Center

    What languages does Dr. Ruiz speak?

    Dr. Ruiz and their clinical team can communicate with patients in the following languages:

    • English

    • Spanish

    What conditions does Dr. Ruiz treat?

    As a Obstetrician / Gynecologist (OBGYN), Dr. Ruiz diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Ruiz. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.

    Also known as:

    • Second Trimester Prenatal Care
    • Prenatal Care for Normal Pregnancy
    • Third Trimester Prenatal Care
    • Prenatal Care
    • Mid-Pregnancy Check-ups
    • Routine Second Trimester Care
    • Maternity Care (Second Trimester)
    • Routine Pregnancy Check-ups
    • Maternity Care
    • Normal Pregnancy Supervision
    • Late pregnancy care
    • Third trimester check-ups
    • Antenatal care in late pregnancy
    • Late Pregnancy Check-ups
    • Routine Third Trimester Care
    • Maternity Care (Third Trimester)

    ICD-10 Codes:

    • Z3492: Encounter for supervision of normal pregnancy, unspecified, second trimester
    • Z3490: Encounter for supervision of normal pregnancy, unspecified, unspecified trimester
    • Z3493: Encounter for supervision of normal pregnancy, unspecified, third trimester
    • Z3483: Encounter for supervision of other normal pregnancy, third trimester
    • Z3403: Encounter for supervision of normal first pregnancy, third trimester

    Also known as:

    • General Cancer Screening
    • Health Screening
    • Unspecified Cancer Screening
    • Overall Cancer Check
    • Comprehensive Cancer Screening

    ICD-10 Codes:

    • Z129: Encounter for screening for malignant neoplasm, site unspecified

    Also known as:

    • Routine Gynecological Exam (Normal Findings)
    • Women's Health Checkup
    • Women's checkup, all clear
    • Pelvic exam, normal results
    • OB/GYN visit, no issues

    ICD-10 Codes:

    • Z01419: Encounter for gynecological examination (general) (routine) without abnormal findings

    Also known as:

    • Other Pre-Procedure Examination
    • Pre-Procedure Lab Tests
    • Various pre-op checks
    • Miscellaneous pre-surgery exams
    • Other pre-treatment assessments
    • Pre-op blood work
    • Lab tests before surgery
    • Pre-treatment lab assessment

    ICD-10 Codes:

    • Z01818: Encounter for other preprocedural examination
    • Z01812: Encounter for preprocedural laboratory examination

    Also known as:

    • Heavy and Frequent Periods (Regular Cycle)
    • Amenorrhea
    • Menstruation
    • Menorrhagia
    • Polymenorrhea
    • Abnormal Uterine Bleeding
    • Absent Periods
    • No Periods
    • Lack of Menstruation

    ICD-10 Codes:

    • N920: Excessive and frequent menstruation with regular cycle
    • N912: Amenorrhea, unspecified

    Also known as:

    • Other Post-Surgery Condition
    • Postoperative State
    • Recovery After Surgery
    • Surgical Follow-up

    ICD-10 Codes:

    • Z98890: Other specified postprocedural states

    Also known as:

    • Uterine Fibroids
    • Leiomyoma of uterus
    • Myoma
    • Fibromyoma
    • Uterine leiomyoma

    ICD-10 Codes:

    • D251: Intramural leiomyoma of uterus

    Also known as:

    • Immunization Visit
    • Vaccines
    • Vaccination appointment
    • Shot visit
    • Immunization encounter

    ICD-10 Codes:

    • Z23: Encounter for immunization

    Also known as:

    • Low-Grade Abnormal Cells on Pap Test (LGSIL)
    • Cervical Cancer Screening
    • Cervix Disorder
    • Abnormal Pap Smear
    • LGSIL Pap Test
    • Mild Cervical Dysplasia
    • Low-Grade Squamous Intraepithelial Lesion

    ICD-10 Codes:

    • R87612: Low grade squamous intraepithelial lesion on cytologic smear of cervix (LGSIL)

    Also known as:

    • Pregnancy Care for Older Mothers with Previous Births
    • Health Problems in Pregnancy
    • Advanced Maternal Age Multiple Pregnancies
    • Elderly Multigravida Care
    • Older Mother with Prior Births Pregnancy Monitoring

    ICD-10 Codes:

    • O09523: Supervision of elderly multigravida, third trimester

    Also known as:

    • Postmenopausal Bleeding
    • Menopause
    • Vaginal Bleeding
    • Bleeding After Menopause
    • Vaginal Bleeding in Menopause

    ICD-10 Codes:

    • N950: Postmenopausal bleeding

    Also known as:

    • HPV Infection
    • HPV
    • Human Papillomavirus
    • Genital Warts Virus
    • Wart Virus

    ICD-10 Codes:

    • B977: Papillomavirus as the cause of diseases classified elsewhere

    Also known as:

    • Abnormal Uterine and Vaginal Bleeding
    • Vaginal Bleeding
    • Unusual Uterine Bleeding
    • Abnormal Vaginal Discharge
    • AUB
    • Irregular Genital Bleeding

    ICD-10 Codes:

    • N939: Abnormal uterine and vaginal bleeding, unspecified

    Also known as:

    • Abnormal Findings on Scans of Other Specific Body Structures
    • Unusual Scan Results (Other Body Parts)
    • Atypical Imaging Findings (Other)
    • Abnormal X-ray/MRI/CT (Other)

    ICD-10 Codes:

    • R9389: Abnormal findings on diagnostic imaging of other specified body structures

    Which procedures does Dr. Ruiz perform as a Obstetrician / Gynecologist (OBGYN)?

    As a Obstetrician / Gynecologist (OBGYN), procedures performed by an Dr. G. Thomas Ruiz may include:

    For detailed information, please contact Dr. Ruiz's office.

    Does Dr. Ruiz accept my insurance?

    Dr. Ruiz accepts most major insurance plans. Important: Please call our office at (657) 241-9090 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Ruiz accept in Fountain Valley, CA?

    Dr. Ruiz in Fountain Valley, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Alignment Health Plan

    • All Other Third Party

    • Blue Shield of California

    • CalOptima

    • Centene

    • CVS Health (formerly Aetna)

    • Express Scripts

    • Humana

    • Medicare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Ruiz's office located?

    Dr. G. Thomas Ruiz's Primary Practice

    18111 Brookhurst St Ste 6100

    Fountain Valley, CA 92708

    (657) 241-9090

    Get Directions

    Dr. G. Thomas Ruiz's Practice 2

    15464 Goldenwest St

    Westminster, CA 92683

    Get Directions

    Dr. G. Thomas Ruiz's Practice 3

    722 Baker St

    Costa Mesa, CA 92626

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    What is Dr. Ruiz's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Ruiz's National Provider Identifier (NPI) number is 1518967330.

    What common questions do patients ask about Dr. Ruiz?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Ruiz

    What is Dr. G. Thomas Ruiz's specialty?

    Dr. Ruiz is a Obstetrician / Gynecologist (OBGYN) near Fountain Valley, CA. An obstetrician/gynecologist has specialized knowledge, skills, and expertise in the medical and surgical management of the female reproductive system and related disorders. This physician acts as a consultant to other healthcare providers while also serving as a primary care physician for women, addressing their unique health needs throughout various stages of life. Contact Dr. Ruiz to book an appointment today.

    Is this Dr. G. Thomas Ruiz affiliated with a ranked Castle Connolly Top Hospital?

    No, Ruiz is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Orange Coast Medical Center. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    Where can I learn more about Obstetrician / Gynecologist (OBGYN)?

    Explore Obstetrician / Gynecologist (OBGYN) with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is G. Thomas Ruiz accepting new patients in Fountain Valley, CA?

    Yes, Dr. G. Thomas Ruiz is accepting new patients at this time.

    Does Dr. G. Thomas Ruiz offer online booking?

    Please contact Dr. Ruiz's office at (657) 241-9090 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with G. Thomas Ruiz?

    Please contact Dr. Ruiz's office at (657) 241-9090 for information regarding telehealth appointment availability or for scheduling assistance.

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