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Dr. William Lock, MD

San Mateo, CA

21 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Lock, Obstetrician / Gynecologist (OBGYN) in San Mateo, CA?

    Dr. William Lock, MD is an Obstetrician / Gynecologist (OBGYN), who primarily practices in San Mateo, CA with 1 additional practice location. He has been practicing for over 21 years and is board certified. Dr. Lock graduated from Sidney Kimmel Medical College at Thomas Jefferson University. Dr. Lock is fluent in English and Spanish, and is currently seeing new patients. Dr. Lock’s practice accepts Kaiser Permanente, Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Lock’s office at (650) 573-2123.

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

    • Medical School: Thomas Jefferson University Jefferson Medical College | Sidney Kimmel Medical College at Thomas Jefferson University

    What languages does Dr. Lock speak?

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

    • English

    • Spanish

    What conditions does Dr. Lock treat?

    As a Obstetrician / Gynecologist (OBGYN), Dr. Lock 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. Lock. 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:

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

    ICD-10 Codes:

    • Z3483: Encounter for supervision of other normal pregnancy, third trimester
    • Z3482: Encounter for supervision of other normal pregnancy, second trimester
    • Z3493: Encounter for supervision of normal pregnancy, unspecified, third trimester
    • Z3492: Encounter for supervision of normal pregnancy, unspecified, second trimester
    • Z3481: Encounter for supervision of other normal pregnancy, first trimester
    • Z3403: Encounter for supervision of normal first pregnancy, third trimester
    • Z3490: Encounter for supervision of normal pregnancy, unspecified, unspecified trimester
    • Z3491: Encounter for supervision of normal pregnancy, unspecified, first trimester

    Also known as:

    • Birth Control Shot Check-up
    • Other Birth Control Counseling
    • Birth Control
    • Injectable contraceptive follow-up
    • Depo-Provera monitoring
    • Birth control injection check
    • Additional contraceptive advice
    • General family planning discussion
    • Ongoing birth control counseling

    ICD-10 Codes:

    • Z3042: Encounter for surveillance of injectable contraceptive
    • Z3009: Encounter for other general counseling and advice on contraception

    Also known as:

    • Positive Pregnancy Test
    • Pregnancy
    • Confirmed Pregnancy
    • Pregnant Result
    • Positive HCG Test

    ICD-10 Codes:

    • Z3201: Encounter for pregnancy test, result positive

    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:

    • Low Transverse C-section Scar in Pregnancy
    • Prenatal Care
    • Horizontal C-section Scar (Pregnancy)
    • Low-lying C-section Scar
    • Prior Cesarean Scar (Low Transverse)

    ICD-10 Codes:

    • O34211: Maternal care for low transverse scar from previous cesarean delivery

    Also known as:

    • Uterine and Vaginal Prolapse
    • Cervix Disorder
    • Pelvic Floor Disorder
    • Uterine prolapse
    • Vaginal prolapse
    • Dropped uterus and vagina

    ICD-10 Codes:

    • N814: Uterovaginal prolapse, unspecified

    Also known as:

    • Follow-up After Treatment (Non-Cancer)
    • Post-Treatment Check-up
    • Aftercare Visit
    • Recovery Monitoring Exam

    ICD-10 Codes:

    • Z09: Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

    Also known as:

    • Cervical Cancer Screening
    • HPV and Pap Test Results
    • Pap Test
    • HPV Test
    • Cervical Smear
    • Early Cervical Cancer Detection

    ICD-10 Codes:

    • Z124: Encounter for screening for malignant neoplasm of cervix

    Also known as:

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

    ICD-10 Codes:

    • Z23: Encounter for immunization

    Also known as:

    • Reduced Fetal Movement
    • Baby Moving Less
    • Fetal Hypoactivity
    • Decreased Baby Kicks

    ICD-10 Codes:

    • O368130: Decreased fetal movements, third trimester, not applicable or unspecified

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

    As a Obstetrician / Gynecologist (OBGYN), procedures performed by an Dr. William Lock may include:

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

    Does Dr. Lock accept my insurance?

    Dr. Lock accepts most major insurance plans. Important: Please call our office at (650) 573-2123 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Lock accept in San Mateo, CA?

    Dr. Lock in San Mateo, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Alameda Alliance

    • All Other Third Party

    • Health Plan of San Mateo

    • Kaiser Permanente

    • Medicaid

    • Medicare

    • Other Health Care Provider

    • Santa Clara Family Health Plan

    • State of California

    • Valley Health Plan

    View All Insurances

    Where is Dr. Lock's office located?

    Dr. William Lock's Primary Practice

    222 W 39th Ave # 316

    San Mateo, CA 94403

    (650) 573-2123

    Get Directions

    Dr. William Lock's Practice 2

    2710 Middlefield Rd

    Redwood City, CA 94063

    Get Directions

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

    Dr. Lock's National Provider Identifier (NPI) number is 1770656753.

    What common questions do patients ask about Dr. Lock?

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

    What is Dr. William Lock's specialty?

    Dr. Lock is a Obstetrician / Gynecologist (OBGYN) near San Mateo, 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. Lock to book an appointment today.

    Is this Dr. William Lock affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Lock is affiliated with San Mateo Medical Center, Stanford Health Care - Stanford Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They 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 William Lock accepting new patients in San Mateo, CA?

    Yes, Dr. William Lock is accepting new patients at this time.

    Does Dr. William Lock offer online booking?

    Please contact Dr. Lock's office at (650) 573-2123 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with William Lock?

    Please contact Dr. Lock's office at (650) 573-2123 for information regarding telehealth appointment availability or for scheduling assistance.

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