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Dr. John Colby, MD, PHD

Neuroradiologist, Diagnostic Radiologist

Greenbrae, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Colby, Neuroradiologist in Greenbrae, CA?

    Dr. John Colby, MD, PHD is a Neuroradiologist, who primarily practices in Greenbrae, CA with 2 additional practice locations. Dr. Colby is fluent in English, and is currently seeing new patients. Dr. Colby’s practice accepts Kaiser Permanente, Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Colby’s office at (415) 925-7301.

    What languages does Dr. Colby speak?

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

    • English

    What conditions does a Neuroradiologist like Dr. Colby typically treat?

    As a Neuroradiologist, Dr. Colby 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. Colby. 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.

    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:

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

    ICD-10 Codes:

    • S0990XA: Unspecified injury of head, initial encounter

    Also known as:

    • Brain Ischemia
    • Ischemic Stroke
    • Lack of Blood Flow to Brain
    • Brain Hypoxia

    ICD-10 Codes:

    • I6782: Cerebral ischemia

    Also known as:

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

    ICD-10 Codes:

    • R079: Chest pain, unspecified

    Also known as:

    • Neck Injury
    • Neck Injuries and Disorder
    • Neck Trauma
    • Neck Damage
    • Injured Neck

    ICD-10 Codes:

    • S199XXA: Unspecified injury of neck, initial encounter

    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:

    • Primary Osteoarthritis in Right Knee
    • Osteoarthritis
    • Right Knee Arthritis
    • Right Knee Degenerative Joint Disease

    ICD-10 Codes:

    • M1711: Unilateral primary osteoarthritis, right knee

    Also known as:

    • Chest Injury
    • Chest Injuries and Disorder
    • Thoracic Injury
    • Chest Trauma
    • Rib Cage Injury

    ICD-10 Codes:

    • S299XXA: Unspecified injury of thorax, initial encounter

    What procedures does a Neuroradiologist like Dr. Colby typically perform?

    As a Neuroradiologist, Dr. Colby 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. Colby. 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.

    Also known as:

    • Radioactive Tracer Injection for Sentinel Lymph Node Biopsy
    • Sentinel Node Mapping Injection
    • Lymph Node Tracer Injection
    • Radioactive Dye for Lymph Nodes
    • Sentinel Lymph Node Identification

    CPT Codes:

    • 38792: Injection procedure; radioactive tracer for identification of sentinel node

    Also known as:

    • Ultrasound-Guided Fine Needle Biopsy
    • Biopsy
    • Ultrasound
    • FNA Biopsy with Ultrasound
    • Image-Guided Biopsy
    • Fine Needle Aspiration
    • First Lesion Biopsy

    CPT Codes:

    • 10005: Fine needle aspiration biopsy, including ultrasound guidance; first lesion

    Also known as:

    • Epidural Steroid Injection
    • Cervical Epidural Injection
    • Thoracic Epidural Injection
    • Spinal Nerve Block
    • Pain Relief Spinal Injection

    CPT Codes:

    • 62321: Injection(s), of diagnostic or therapeutic substance(s) (eg, anesthetic, antispasmodic, opioid, steroid, other solution), not including neurolytic substances, including needle or catheter placement, interlaminar epidural or subarachnoid, cervical or thoracic; with imaging guidance (ie, fluoroscopy or CT)

    Also known as:

    • Spinal Nerve Block Injection
    • Transforaminal Epidural Injection
    • Cervical Epidural Injection
    • Thoracic Epidural Injection
    • Nerve Root Block

    CPT Codes:

    • 64479: Injection(s), anesthetic agent(s) and/or steroid; transforaminal epidural, with imaging guidance (fluoroscopy or CT), cervical or thoracic, single level

    Also known as:

    • Fluid Removal from Lung Area with Imaging Guidance
    • Thoracentesis
    • Pleural Fluid Aspiration
    • Lung Tap
    • Fluid Drainage from Chest

    CPT Codes:

    • 32555: Thoracentesis, needle or catheter, aspiration of the pleural space; with imaging guidance

    Also known as:

    • Abdominal Fluid Drainage with Imaging Guidance
    • Guided Abdominal Paracentesis
    • Ascites Drainage with Ultrasound
    • Fluid Removal from Belly

    CPT Codes:

    • 49083: Abdominal paracentesis (diagnostic or therapeutic); with imaging guidance

    Also known as:

    • Joint or Bursa Injection/Fluid Removal
    • Arthrocentesis
    • Major Joint Aspiration
    • Bursa Injection
    • Joint Fluid Removal

    CPT Codes:

    • 20610: Arthrocentesis, aspiration and/or injection, major joint or bursa (eg, shoulder, hip, knee, subacromial bursa); without ultrasound guidance

    Does Dr. Colby accept my insurance?

    Dr. Colby accepts most major insurance plans. Important: Please call our office at (415) 925-7301 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Colby accept in Greenbrae, CA?

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

    Top Insurances

    • Blue Shield of California

    • Cigna Group

    • CVS Health (formerly Aetna)

    • Hill Physicians Medical Group

    • Kaiser Permanente

    • Medicare

    • Molina Healthcare

    • Other Health Care Provider

    • Other Provider Networks

    • UnitedHealth Group

    View All Insurances

    Where is Dr. Colby's office located?

    Dr. John Colby's Primary Practice

    250 Bon Air Rd

    Greenbrae, CA 94904

    (415) 925-7301

    Get Directions

    Dr. John Colby's Practice 2

    1240 S Eliseo Dr Ste 103

    Greenbrae, CA 94904

    Get Directions

    Dr. John Colby's Practice 3

    180 Rowland Way

    Novato, CA 94945

    Get Directions

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

    Dr. Colby's National Provider Identifier (NPI) number is 1700205374.

    What common questions do patients ask about Dr. Colby?

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

    What is Dr. John Colby's specialty?

    Dr. Colby is a Neuroradiologist near Greenbrae, CA.

    What does a Neuroradiologist do?

    A neuroradiologist is an expert who diagnoses and treats diseases using imaging procedures related to the brain, spine, spinal cord, head, neck, and sensory organs in both adults and children.

    Is Dr. John Colby affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Colby is affiliated with Marinhealth Medical Center, Novato Community Hospital, Kaiser Permanente San Rafael Medical Center, California Pacific Medical Center - Van Ness Campus, Stanford Health Care - Stanford Hospital, Kaiser Permanente Santa Rosa 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 Neuroradiologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Neuroradiologist. 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 Dr. John Colby accepting new patients in Greenbrae, CA?

    Yes, Dr. John Colby is accepting new patients at this time.

    Does Dr. John Colby offer online booking?

    Please contact Dr. Colby's office at (415) 925-7301 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. John Colby?

    Please contact Dr. Colby's office at (415) 925-7301 to schedule an appointment.

    Where is Dr. Colby's office located?

    Dr. Colby's offices are located in Greenbrae, CA and Novato, CA.