EverydayHealthLogo
Dr. Clay Napper, MD

Dr. Clay Napper, MD

San Mateo, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Napper, Diagnostic Radiologist in San Mateo, CA?

    Dr. Clay Napper, MD is a Diagnostic Radiologist, who primarily practices in San Mateo, CA with 2 additional practice locations. He is board certified. Dr. Napper graduated from Wake Forest University School of Medicine and completed his residency at Stanford University Program. Dr. Napper is fluent in English, and is currently seeing new patients. Dr. Napper’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Napper’s office at (650) 696-4515.

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

    • Residency: Stanford University Program

    • Medical School: Wake Forest University School of Medicine

    Is Dr. Napper board certified as a Diagnostic Radiologist?

    Yes, Dr. Clay Napper, MD is board certified by the American Board of Radiology

    What languages does Dr. Napper speak?

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

    • English

    What conditions does a Diagnostic Radiologist like Dr. Napper typically treat?

    As a Diagnostic Radiologist, Dr. Napper 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. Napper. 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. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Mammogram for Breast Cancer Screening
    • Health Screening
    • Mammography
    • Breast Cancer Screening (PDQ®)
    • Mammograms
    • Breast X-ray
    • Breast Cancer Check

    ICD-10 Codes:

    • Z1231: Encounter for screening mammogram for malignant neoplasm of breast

    Also known as:

    • Other Abnormal Findings on Lung Scan
    • Unusual Lung Scan Results
    • Atypical Lung Imaging
    • Nonspecific Lung Abnormality

    ICD-10 Codes:

    • R918: Other nonspecific abnormal finding of lung field

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Upper body pain

    ICD-10 Codes:

    • R079: Chest pain, unspecified

    Also known as:

    • Pleural Effusion
    • Pleural Disorder
    • Fluid in lungs
    • Water on the lung
    • Fluid around lungs

    ICD-10 Codes:

    • J90: Pleural effusion, not elsewhere classified

    Also known as:

    • Shortness of Breath
    • Breathing Problems
    • Difficulty breathing
    • Breathlessness
    • Dyspnea

    ICD-10 Codes:

    • R0602: Shortness of breath

    Also known as:

    • Cough
    • Coughing
    • Persistent cough
    • Chronic cough

    ICD-10 Codes:

    • R059: Cough, unspecified

    Also known as:

    • Head Injury
    • Head Injuries
    • Head Trauma
    • Cranial Injury
    • Brain Injury

    ICD-10 Codes:

    • S0990XA: Unspecified injury of head, initial encounter

    What procedures does a Diagnostic Radiologist like Dr. Napper typically perform?

    As a Diagnostic Radiologist, Dr. Napper performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Napper. 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. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Ultrasound-Guided Breast Biopsy
    • Breast Biopsy
    • Percutaneous Breast Biopsy
    • Breast Tissue Sample
    • Breast Lesion Biopsy with Clip

    CPT Codes:

    • 19083: Biopsy, breast, with placement of breast localization device(s) (eg, clip, metallic pellet), when performed, and imaging of the biopsy specimen, when performed, percutaneous; first lesion, including ultrasound guidance

    Also known as:

    • Uterine Catheterization for Imaging
    • Saline Infusion Sonohysterography Prep
    • Hysterosalpingography Prep
    • Uterine Contrast Injection

    CPT Codes:

    • 58340: Catheterization and introduction of saline or contrast material for saline infusion sonohysterography (SIS) or hysterosalpingography

    Does Dr. Napper accept my insurance?

    Dr. Napper accepts most major insurance plans. Important: Please call our office at (650) 696-4515 before your appointment to verify that your specific plan and network are accepted.

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

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

    Top Insurances

    • Alignment Healthcare

    • All Other Third Party

    • Blue Shield of California

    • Cigna Group

    • CVS Health (formerly Aetna)

    • Medicare

    • Other Health Care Provider

    • State of California

    • Sutter Health

    • UnitedHealth Group

    View All Insurances

    Where is Dr. Napper's office located?

    Dr. Clay Napper's Primary Practice

    100 S San Mateo Dr

    San Mateo, CA 94401

    (650) 696-4515

    Get Directions

    Dr. Clay Napper's Practice 2

    1501 Trousdale Dr

    Burlingame, CA 94010

    Get Directions

    Dr. Clay Napper's Practice 3

    222 W 39th Ave

    San Mateo, CA 94403

    Get Directions

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

    Dr. Napper's National Provider Identifier (NPI) number is 1053352815.

    What common questions do patients ask about Dr. Napper?

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

    What is Dr. Clay Napper's specialty?

    Dr. Napper is a Diagnostic Radiologist near San Mateo, CA.

    What does a Diagnostic Radiologist do?

    A radiologist is a medical doctor who specializes in using imaging technologies to diagnose, manage, and treat various medical conditions. Radiologists typically focus on Diagnostic Radiology, Interventional Radiology, or Radiation Oncology, and may also obtain certifications in a range of subspecialties, such as neuroradiology, musculoskeletal radiology, or pediatric radiology. Additionally, board certifications are available in Medical Physics, which ensures the safe and effective use of radiation in imaging and treatment. Radiologists collaborate with other healthcare professionals to interpret imaging results and help guide patient care decisions.

    Is this Dr. Clay Napper affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Napper is affiliated with Mills-Peninsula Medical Center, San Mateo Medical Center, Stanford Health Care - Stanford Hospital, Ahmc Seton Medical Center, Kaiser Permanente South San Francisco Medical Center, San Mateo Medical Center 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

    When to see a Diagnostic Radiologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Diagnostic Radiologist. Explore 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 Clay Napper accepting new patients in San Mateo, CA?

    Yes, Dr. Clay Napper is accepting new patients at this time.

    Does Dr. Clay Napper offer online booking?

    Please contact Dr. Napper's office at (650) 696-4515 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Clay Napper?

    Please contact Dr. Napper's office at (650) 696-4515 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Clay Napper have?

    Dr. Clay Napper is certified by the American Board of Radiology.

    <section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>