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Dr. John Siebel, MD

San Mateo, CA

50 Years of Experience

Accepting patients

    Who is Dr. Siebel, Medical Oncologist in San Mateo, CA?

    Dr. John Siebel, MD is a Medical Oncologist, who primarily practices in San Mateo, CA. He has been practicing for over 50 years and is board certified. Dr. Siebel completed his residency at Mt Sinai Med Ctr, Neoplastic Diseases; Harkness Comm Hosp Med, Anatomic And Clinical Pathology; Univ Wa Med Ctr, Anatomic And Clinical Pathology. Dr. Siebel is fluent in English, French, Russian, and Spanish, and is currently seeing new patients. To book an appointment or to confirm insurance options, please call Dr. Siebel’s office at (208) 743-7427.

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

    • Residency: Mt Sinai Med Ctr, Neoplastic Diseases; Harkness Comm Hosp Med, Anatomic And Clinical Pathology; Univ Wa Med Ctr, Anatomic And Clinical Pathology | Harkness Med Center

    • Medical School: Tulane Univ Sch of Med, New Orleans La

    Is Dr. Siebel board certified as a Medical Oncologist?

    Yes, Dr. John Siebel, MD is board certified by the American Board of Internal Medicine , American Board of Pathology

    What languages does Dr. Siebel speak?

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

    • English

    • French

    • Russian

    • Spanish

    What conditions does a Medical Oncologist like Dr. Siebel typically treat?

    What procedures does a Medical Oncologist like Dr. Siebel typically perform?

    As a Medical Oncologist, procedures performed by Dr. John Siebel may include:

    Please contact Dr. Siebel's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.

    Does Dr. Siebel accept my insurance?

    Please contact Dr. Siebel's office to confirm accepted insurance plans.

    Where is Dr. Siebel's office located?

    Dr. John Siebel's Primary Practice

    218 De Anza Blvd

    San Mateo, CA 94402

    (208) 743-7427

    Get Directions

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

    Dr. Siebel's National Provider Identifier (NPI) number is 1780741306.

    What common questions do patients ask about Dr. Siebel?

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

    What is Dr. John Siebel's specialty?

    Dr. Siebel is a Medical Oncologist near San Mateo, CA.

    What does a Medical Oncologist do?

    An internist specializing in the diagnosis and treatment of various cancers and both benign and malignant tumors. This specialist determines and administers therapy for malignancies and collaborates with surgeons and radiation oncologists on additional cancer treatment options.

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

    No, Siebel is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: AHMC Seton 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

    When to see a Medical Oncologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Medical Oncologist. 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 John Siebel accepting new patients in San Mateo, CA?

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

    Does Dr. John Siebel offer online booking?

    Please contact Dr. Siebel's office at (208) 743-7427 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Siebel?

    Please contact Dr. Siebel's office at (208) 743-7427 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Siebel have?

    Dr. John Siebel is certified by the American Board of Internal Medicine and American Board of Pathology.

    <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>