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MD

Dr. Marc Demyun, MD

Greenville, TX

23 Years of Experience

Accepting patients
Online booking

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Demyun, Internist in Greenville, TX?

    Dr. Marc Demyun, MD is an Internist, who primarily practices in Greenville, TX with 2 additional practice locations. He has been practicing for over 23 years and is board certified. Dr. Demyun graduated from Ross University School Of Medicine and completed his residency at Mt Sinai Sch Of Med, Internal Medicine; St Vincent Hosp Hlthcare Ctr, Internal Medicine. Dr. Demyun is fluent in English, and is currently seeing new patients. Dr. Demyun’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Demyun’s office at (903) 453-2850.

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

    • Residency: Mt Sinai Sch Of Med, Internal Medicine; St Vincent Hosp Hlthcare Ctr, Internal Medicine | Icahn School of Medicine at Mount Sinai Program A

    • Medical School: Ross Univ- Sch Of Med & Vet Med- Roseau- Dominica | Ross University School Of Medicine

    Is Dr. Demyun board certified as an Internist?

    Yes, Dr. Marc Demyun, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Demyun speak?

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

    • English

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

    As an Internist, Dr. Demyun 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. Demyun. 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:

    • Fatigue
    • Chronic Fatigue Syndrome (CFS)
    • Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
    • Tiredness
    • Lack of energy
    • Exhaustion
    • Myalgic encephalomyelitis (ME)
    • Long-term tiredness
    • Persistent fatigue

    ICD-10 Codes:

    • R5383: Other fatigue
    • R5382: Chronic fatigue, unspecified

    Also known as:

    • Back Muscle Spasm
    • Neuromuscular Disorder
    • Back Muscle Cramp
    • Spasms in Back
    • Lower Back Spasm

    ICD-10 Codes:

    • M62830: Muscle spasm of back

    Also known as:

    • Pinched Nerve in Lower Back
    • Back Pain
    • Peripheral Nerve Disorder
    • Lumbar Radiculopathy
    • Lower Back Nerve Compression
    • Compressed Nerve in Lower Back

    ICD-10 Codes:

    • M5416: Radiculopathy, lumbar region

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Allergic Rhinitis
    • Allergy
    • Nasal allergy
    • Chronic allergy symptoms
    • Allergic reactions

    ICD-10 Codes:

    • J3089: Other allergic rhinitis

    Also known as:

    • Low Back Pain
    • Back Pain
    • Lumbago
    • Lower Back Ache
    • Backache

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Muscle Cramps
    • Muscle Spasms
    • Charley Horse
    • Leg Cramps

    ICD-10 Codes:

    • R252: Cramp and spasm

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

    As an Internist, Dr. Demyun 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. Demyun. 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:

    • Wound Debridement
    • Skin and Tissue Debridement
    • Surgical Wound Cleaning
    • Tissue Removal from Wound
    • Dead Tissue Removal
    • Wound Cleaning
    • Surgical Debridement
    • Subcutaneous Tissue Debridement

    CPT Codes:

    • 11042: Debridement, subcutaneous tissue (includes epidermis and dermis, if performed); first 20 sq cm or less
    • 11045: Debridement, subcutaneous tissue (includes epidermis and dermis, if performed); each additional 20 sq cm, or part thereof (List separately in addition to code for primary procedure)

    Also known as:

    • Chemical Cauterization of Granulation Tissue
    • Proud flesh removal
    • Chemical burn for wound overgrowth
    • Granulation tissue treatment
    • Wound cautery

    CPT Codes:

    • 17250: Chemical cauterization of granulation tissue (ie, proud flesh)

    Does Dr. Demyun accept my insurance?

    Dr. Demyun accepts most major insurance plans. Important: Please call our office at (903) 453-2850 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Demyun accept in Greenville, TX?

    Dr. Demyun in Greenville, TX accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Centene Corporation

    • Cigna Group

    • CVS Health (formerly Aetna)

    • Health Care Service Corporation

    • Humana

    • Medicaid

    • Medicare

    • UMR Administered Payer

    • UnitedHealth Group

    • Unknown

    View All Insurances

    Where is Dr. Demyun's office located?

    Dr. Marc Demyun's Primary Practice

    4001 Ridgecrest Rd Ste A

    Greenville, TX 75402

    (903) 453-2850

    Get Directions

    Dr. Marc Demyun's Practice 2

    9901 Valley Ranch Pkwy E Ste 1015

    Irving, TX 75063

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    Dr. Marc Demyun's Practice 3

    2810 E Trinity Mills Rd Ste 130

    Carrollton, TX 75006

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    Would you like to schedule an appointment with Dr. Marc Demyun?

    Dr. Demyun has appointments available at his Greenville, TX office, as well as 2 other locations. Please select a location, date, and time below.

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

    Dr. Demyun's National Provider Identifier (NPI) number is 1952366684.

    What common questions do patients ask about Dr. Demyun?

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

    What is Dr. Marc Demyun's specialty?

    Dr. Demyun is a Internist near Greenville, TX.

    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. Marc Demyun affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Demyun is affiliated with Hunt Regional Medical Center At Greenville, Texas Health Presbyterian Hospital Dallas, Baylor Scott & White Medical Center - Mckinney, Ascension Seton Highland Lakes, Texas Health Denton, White Rock 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 Marc Demyun accepting new patients in Greenville, TX?

    Yes, Dr. Marc Demyun is accepting new patients at this time.

    Does Dr. Marc Demyun offer online booking?

    Yes, you can use online booking to schedule an appointment with Dr. Demyun, or call (903) 453-2850 for more information.

    How can I make an appointment with Marc Demyun?

    Please contact Dr. Demyun's office at (903) 453-2850 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Marc Demyun have?

    Dr. Marc Demyun 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>