EverydayHealthLogo
Dr. John Feng, MD

Dr. John Feng, MD

Santa Ana, CA

Accepting patients

    Who is Dr. Feng, Internist in Santa Ana, CA?

    Dr. John Feng, MD is an Internist, who primarily practices in Santa Ana, CA with 1 additional practice location. Dr. Feng is fluent in English, and is currently seeing new patients. Dr. Feng’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Feng’s office at (888) 789-9585.

    What languages does Dr. Feng speak?

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

    • English

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

    As an Internist, Dr. Feng 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. Feng. 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 General Medical Examination
    • Health Checkup
    • General Health Checkup
    • Comprehensive Medical Exam
    • Miscellaneous Physical Exam

    ICD-10 Codes:

    • Z008: Encounter for other general examination

    Also known as:

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

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Also known as:

    • Type 2 Diabetes with Chronic Kidney Disease
    • Type 2 Diabetes with Diabetic Neuropathy
    • Type 2 Diabetes
    • Diabetes Type 2
    • Diabetic Kidney Problems
    • Type 2 diabetes
    • Diabetic Nerve Problems
    • Diabetic Neuropathy
    • Diabetic Chronic Kidney Disease
    • Long-term Kidney Failure from Type 2 Diabetes
    • Type 2 Diabetes End-Stage Renal Disease
    • Diabetic Nerve Damage
    • Diabetic Polyneuropathy
    • Peripheral Neuropathy from Diabetes
    • Diabetes Mellitus Nerve Problems
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes

    ICD-10 Codes:

    • E1122: Type 2 diabetes mellitus with diabetic chronic kidney disease
    • E1142: Type 2 diabetes mellitus with diabetic polyneuropathy
    • E119: Type 2 diabetes mellitus without complications

    Also known as:

    • Wound Dressing Change or Removal
    • Wounds and Injuries
    • Non-surgical dressing care
    • Wound care visit
    • Dressing replacement

    ICD-10 Codes:

    • Z4800: Encounter for change or removal of nonsurgical wound dressing

    Also known as:

    • Atrial Fibrillation
    • Afib
    • A-fib
    • Irregular heart rhythm

    ICD-10 Codes:

    • I4891: Unspecified atrial fibrillation

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Alzheimer's Disease
    • Alzheimer's Disease Fact Sheet
    • AD
    • Alzheimer's Dementia
    • Memory Loss Disease

    ICD-10 Codes:

    • G309: Alzheimer's disease, unspecified

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

    As an Internist, Dr. Feng 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. Feng. 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:

    • Impacted Ear Wax Removal (One Ear)
    • Cerumen Impaction Removal
    • Ear Wax Extraction with Tools
    • Professional Ear Cleaning

    CPT Codes:

    • 69210: Removal impacted cerumen requiring instrumentation, unilateral

    Does Dr. Feng accept my insurance?

    Dr. Feng accepts most major insurance plans. Important: Please call our office at (888) 789-9585 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Feng accept in Santa Ana, CA?

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

    Top Insurances

    • Centene Corporation

    • CVS Health (formerly Aetna)

    • Humana

    • Medicare

    View All Insurances

    Where is Dr. Feng's office located?

    Dr. John Feng's Primary Practice

    3401 W Sunflower Ave Ste 100

    Santa Ana, CA 92704

    (888) 789-9585

    Get Directions

    Dr. John Feng's Practice 2

    1031 Avenida Pico Ste 204

    San Clemente, CA 92673

    Get Directions

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

    Dr. Feng's National Provider Identifier (NPI) number is 1346660081.

    What common questions do patients ask about Dr. Feng?

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

    What is Dr. John Feng's specialty?

    Dr. Feng is a Internist near Santa Ana, 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. John Feng affiliated with a ranked Castle Connolly Top Hospital?

    No, Feng 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

    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 John Feng accepting new patients in Santa Ana, CA?

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

    Does Dr. John Feng offer online booking?

    Please contact Dr. Feng's office at (888) 789-9585 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Feng?

    Please contact Dr. Feng's office at (888) 789-9585 for information regarding telehealth appointment availability or for scheduling assistance.

    Other Internist Near Santa Ana, CA

    acceptingPatients-iconAccepting patients
    Orange, CA
    acceptingPatients-iconAccepting patients
    Santa Ana, CA
    acceptingPatients-iconAccepting patients
    North Hollywood, CA
    See All Specialists

    Doctors by Category

    Specialists