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Dr. Oliver Mason, MD

Dr. Oliver Mason, MD

Long Beach, CA

35 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Mason, Internist in Long Beach, CA?

    Dr. Oliver Mason, MD is an Internist, who primarily practices in Long Beach, CA with 2 additional practice locations. He has been practicing for over 35 years and is board certified. Dr. Mason graduated from University of California and completed his residency at Univ Ca Irvine Med Ctr, Internal Medicine. Dr. Mason is fluent in English and Spanish, and is currently seeing new patients. Dr. Mason’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Mason’s office at (562) 982-0010.

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

    • Residency: Univ Ca Irvine Med Ctr, Internal Medicine | UC Irvine Medical Center

    • Medical School: University of Ca, San Francisco, Sch of Med, San Francisco Ca | University of California

    Is Dr. Mason board certified as an Internist?

    Yes, Dr. Oliver Mason, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Mason speak?

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

    • English

    • Spanish

    What conditions does an Internist like Dr. Mason typically treat?

    As an Internist, Dr. Mason 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. Mason. 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:

    • Anemia
    • Iron Deficiency Anemia
    • Iron
    • Low Red Blood Cell Count
    • Low Hemoglobin
    • Iron deficiency
    • Anemia from Iron Lack
    • Low Iron Anemia
    • Sideropenic Anemia

    ICD-10 Codes:

    • D649: Anemia, unspecified
    • D509: Iron deficiency anemia, unspecified

    Also known as:

    • High Blood Pressure
    • Hypertension
    • Primary Hypertension
    • Essential Hypertension

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • High Cholesterol
    • Cholesterol
    • Triglycerides
    • Hyperlipidemia
    • High lipids
    • Dyslipidemia

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Also known as:

    • Low Potassium
    • Fluid and Electrolyte Balance
    • Potassium
    • Hypokalemia
    • Potassium Deficiency

    ICD-10 Codes:

    • E876: Hypokalemia

    Also known as:

    • Low Neutrophil Count
    • Blood Disorder
    • Neutropenia
    • Low white blood cell count
    • Neutrophil deficiency

    ICD-10 Codes:

    • D709: Neutropenia, unspecified

    Also known as:

    • Elevated Blood Pressure
    • High Blood Pressure
    • High Blood Pressure Reading
    • Prehypertension
    • Borderline High Blood Pressure

    ICD-10 Codes:

    • R030: Elevated blood-pressure reading, without diagnosis of hypertension

    Also known as:

    • Headache
    • Head pain
    • Cephalalgia
    • Tension headache

    ICD-10 Codes:

    • R519: Headache, unspecified

    Also known as:

    • Constipation
    • Difficulty Passing Stool
    • Infrequent Bowel Movements
    • Hard Stools

    ICD-10 Codes:

    • K5900: Constipation, unspecified

    What procedures does an Internist like Dr. Mason typically perform?

    As an Internist, procedures performed by Dr. Oliver Mason may include:

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

    Does Dr. Mason accept my insurance?

    Dr. Mason accepts most major insurance plans. Important: Please call our office at (562) 982-0010 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Mason accept in Long Beach, CA?

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

    Top Insurances

    • All Other Third Party

    • Blue Shield of California

    • Centene Corporation

    • CVS Health (formerly Aetna)

    • Kaiser Permanente

    • Medicare

    • Other Health Care Provider

    • St. Joseph Health System (CA)

    • State of California

    • Unknown

    View All Insurances

    Where is Dr. Mason's office located?

    Dr. Oliver Mason's Primary Practice

    2776 Pacific Ave

    Long Beach, CA 90806

    (562) 982-0010

    Get Directions

    Dr. Oliver Mason's Practice 2

    10650 Reagan St Unit 610

    Los Alamitos, CA 90720

    Get Directions

    Dr. Oliver Mason's Practice 3

    10802 College Pl

    Cerritos, CA 90703

    Get Directions

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

    Dr. Mason's National Provider Identifier (NPI) number is 1871606434.

    What common questions do patients ask about Dr. Mason?

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

    What is Dr. Oliver Mason's specialty?

    Dr. Mason is a Internist near Long Beach, CA.

    What does an Internist do?

    A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

    Is this Dr. Oliver Mason affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Mason is affiliated with Hoag Hospital Newport Beach, Ahmc Anaheim Regional 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 an Internist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Internist. 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 Oliver Mason accepting new patients in Long Beach, CA?

    Yes, Dr. Oliver Mason is accepting new patients at this time.

    Does Dr. Oliver Mason offer online booking?

    Please contact Dr. Mason's office at (562) 982-0010 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Oliver Mason?

    Please contact Dr. Mason's office at (562) 982-0010 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Oliver Mason have?

    Dr. Oliver Mason is certified by the American Board of Internal Medicine.

    <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>