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Dr. Zachary Fellows, MD

Walnut Creek, CA

Accepting patients

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

    Dr. Zachary Fellows, MD is a Rheumatologist, who primarily practices in Walnut Creek, CA with 1 additional practice location. He is board certified. Dr. Fellows is fluent in English, and is currently seeing new patients. Dr. Fellows’s practice accepts Medicare, UnitedHealthcare 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 Dr. Fellows 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.

    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 in Multiple Joints
    • Arthritis
    • Inflammatory joint disease
    • Polyarthritis
    • Chronic inflammatory arthritis
    • Widespread Arthritis
    • Multiple Joint Inflammation
    • Generalized Arthritis

    ICD-10 Codes:

    • M064: Inflammatory polyarthropathy
    • M130: Polyarthritis, unspecified

    Also known as:

    • Osteoarthritis of the right hand
    • Osteoarthritis
    • Osteoarthritis of both knees
    • Degenerative joint disease
    • Wear-and-tear arthritis
    • Arthrosis
    • Joint degeneration
    • Degenerative Joint Disease
    • Wear-and-Tear Arthritis
    • Hand Arthritis

    ICD-10 Codes:

    • M19041: Primary osteoarthritis, right hand
    • M19042: Primary osteoarthritis, left hand
    • M170: Bilateral primary osteoarthritis of knee

    Also known as:

    • Lupus
    • Systemic lupus erythematosus
    • SLE
    • Disseminated lupus erythematosus
    • Systemic Lupus Erythematosus
    • Autoimmune Disease

    ICD-10 Codes:

    • M329: Systemic lupus erythematosus, unspecified
    • M3210: Systemic lupus erythematosus, organ or system involvement unspecified

    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:

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

    ICD-10 Codes:

    • M353: Polymyalgia rheumatica

    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:

    • Psoriatic Arthritis
    • Psoriasis
    • Psoriatic joint inflammation
    • Arthritis with psoriasis
    • Psoriasis-related joint pain

    ICD-10 Codes:

    • L4050: Arthropathic psoriasis, unspecified

    Also known as:

    • Connective Tissue Overlap Syndrome
    • Connective Tissue Disorder
    • Mixed Connective Tissue Disease
    • Overlap Syndrome
    • Undifferentiated Connective Tissue Disease

    ICD-10 Codes:

    • M351: Other overlap syndromes

    Also known as:

    • Age-Related Osteoporosis
    • Fractures
    • Osteoporosis
    • Senile Osteoporosis
    • Primary Osteoporosis
    • Bone Thinning from Aging

    ICD-10 Codes:

    • M810: Age-related osteoporosis without current pathological fracture

    Also known as:

    • Unspecified Joint Disease
    • Joint Disorder
    • Joint Condition
    • Joint Problem

    ICD-10 Codes:

    • M129: Arthropathy, unspecified

    Also known as:

    • Right Wrist Pain
    • Pain
    • Wrist Injuries and Disorder
    • Aching right wrist
    • Sore right wrist
    • Right wrist discomfort

    ICD-10 Codes:

    • M25531: Pain in right wrist

    Which procedures does Dr. Fellows perform as a Rheumatologist?

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

    For detailed information, please contact Dr. Fellows' office.

    Does Dr. Fellows accept my insurance?

    Dr. Fellows accepts most major insurance plans. Important: Please call our office at 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 Health Plan

    • All Other Third Party

    • Blue Cross Blue Shield of Michigan

    • Blue Shield of California

    • CVS Health (formerly Aetna)

    • Medicare

    • Other Support Agencies/Consultants

    • Scan Health Plan

    • Sharp Health Plan

    • UnitedHealthcare

    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

    Dr. Zachary Fellows' Practice 2

    6120 Paseo del Norte Ste C1

    Carlsbad, CA 92011

    Get Directions

    What is Dr. Fellows's NPI number?An 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. 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. Contact Dr. Fellows to book an appointment today.

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

    No, Fellows is not affiliated with a Castle Connolly Top Hospital. 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

    Where can I learn more about Rheumatologist?

    Explore Rheumatologist with 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 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's office for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Zachary Fellows?

    Please contact Dr. Fellows's office for information regarding telehealth appointment availability or for scheduling assistance.

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