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Dr. Zachary Fellows, MD

Rheumatologist

Walnut Creek, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Fellows, Rheumatologist in Walnut Creek, CA?

    Dr. Zachary Fellows, MD is a Rheumatologist, who primarily practices in Walnut Creek, CA. Dr. Fellows is fluent in English, and is currently seeing new patients. Dr. Fellows’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Fellows’s office.

    What languages does Dr. Fellows speak?

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

    • English

    What conditions does a Rheumatologist like Dr. Fellows typically treat?

    As a Rheumatologist, Dr. Fellows 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. Fellows. 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:

    • Rheumatoid Arthritis
    • Rheumatoid Arthritis Affecting Other Body Parts
    • RA
    • Chronic inflammatory arthritis
    • Autoimmune arthritis
    • Inflammatory joint disease
    • Systemic Rheumatoid Arthritis
    • RA with organ involvement
    • Rheumatoid disease affecting multiple systems

    ICD-10 Codes:

    • M0579: Rheumatoid arthritis with rheumatoid factor of multiple sites without organ or systems involvement
    • M0609: Rheumatoid arthritis without rheumatoid factor, multiple sites
    • M0569: Rheumatoid arthritis of multiple sites with involvement of other organs and systems

    Also known as:

    • Fibromyalgia
    • Widespread pain syndrome
    • Chronic muscle pain
    • Fibromyositis

    ICD-10 Codes:

    • M797: Fibromyalgia

    Also known as:

    • Inflammatory Arthritis
    • Arthritis
    • Inflammatory joint disease
    • Polyarthritis
    • Chronic inflammatory arthritis

    ICD-10 Codes:

    • M064: Inflammatory polyarthropathy

    Also known as:

    • Other Psoriatic Arthritis
    • Psoriatic arthritis
    • Psoriasis
    • Atypical psoriatic arthritis
    • Psoriasis-related joint condition
    • Unspecified psoriatic arthropathy

    ICD-10 Codes:

    • L4059: Other psoriatic arthropathy

    Also known as:

    • High Antibody Levels
    • Immune System and Disorder
    • Elevated Antibody Titer
    • Increased Antibodies
    • Positive Antibody Test

    ICD-10 Codes:

    • R760: Raised antibody titer

    Also known as:

    • Right Hand Joint Pain
    • Joint Disorder
    • Sore Right Hand Joints
    • Aching Right Hand Joints
    • Right Hand Discomfort

    ICD-10 Codes:

    • M25541: Pain in joints of right hand

    Also known as:

    • Polymyalgia Rheumatica
    • Polymyalgia Rheumatica and Giant Cell Arteritis
    • PMR
    • Inflammatory Rheumatism

    ICD-10 Codes:

    • M353: Polymyalgia rheumatica

    Also known as:

    • Lupus
    • Systemic lupus erythematosus
    • SLE
    • Disseminated lupus erythematosus

    ICD-10 Codes:

    • M329: Systemic lupus erythematosus, unspecified

    What procedures does a Rheumatologist like Dr. Fellows typically perform?

    As a Rheumatologist, procedures performed by Dr. Zachary Fellows may include:

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

    Does Dr. Fellows accept my insurance?

    Dr. Fellows accepts most major insurance plans. Important: Please contact the office before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Fellows accept in Walnut Creek, CA?

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

    Top Insurances

    • Alignment Healthcare

    • Blue Cross Blue Shield of Michigan

    • Blue Shield of California

    • Centene Corporation

    • CVS Health (formerly Aetna)

    • HealthRight Group

    • Medicare

    • Other Support Agencies/Consultants

    • Sharp HealthCare

    • UnitedHealth Group

    View All Insurances

    Where is Dr. Fellows' office located?

    Dr. Zachary Fellows' Primary Practice

    120 La Casa Via Ste 204

    Walnut Creek, CA 94598

    Get Directions

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

    Dr. Fellows's National Provider Identifier (NPI) number is 1154733152.

    What common questions do patients ask about Dr. Fellows?

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

    What is Dr. Zachary Fellows's specialty?

    Dr. Fellows is a Rheumatologist near Walnut Creek, CA.

    What does a Rheumatologist do?

    An internist specializing in the treatment of diseases affecting the joints, muscles, bones, and tendons. This specialist diagnoses and manages conditions such as arthritis, back pain, muscle strains, common sports injuries, and collagen-related diseases.

    Is Dr. Zachary Fellows affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Fellows is affiliated with Tri-City Medical Center, Scripps Memorial Hospital Encinitas, Sharp Grossmont Hospital, Scripps Memorial Hospital La Jolla, Torrance Memorial Medical Center, John Muir Health Walnut Creek 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 Rheumatologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Rheumatologist. 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. Zachary Fellows accepting new patients in Walnut Creek, CA?

    Yes, Dr. Zachary Fellows is accepting new patients at this time.

    Does Dr. Zachary Fellows offer online booking?

    Please contact Dr. Fellows' office for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Zachary Fellows?

    Please contact Dr. Fellows' office to schedule an appointment.

    Where is Dr. Fellows' office located?

    Dr. Fellows' office is located in Walnut Creek, CA.