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Dr. John Mahmarian, MD

Houston, TX

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Mahmarian, Cardiologist in Houston, TX?

    Dr. John Mahmarian, MD is a Cardiologist, who primarily practices in Houston, TX with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Mahmarian graduated from New York Medical College and completed his residency at Baylor Coll Of Med, Cardiovascular Diseases; Baylor Coll Of Med, Internal Medicine. Dr. Mahmarian is fluent in English, and is currently seeing new patients. Dr. Mahmarian’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Mahmarian’s office at (713) 441-1100.

    What are Areas of Expertise for Dr. Mahmarian?

    Dr. John Mahmarian, MD is a highly-rated, board-certified Cardiologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Mahmarian empowers patients to confidently navigate their health journey, specializing in Acute Coronary Syndromes, Cardiovascular Imaging, Clinical Trials, Ischemic Heart Disease, Nuclear Cardiology, or comprehensive wellness support. Serving the Houston/TX community, Dr. Mahmarian is dedicated to enhancing lives through expert, patient-centered care.

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

    • Residency: Baylor Coll Of Med, Cardiovascular Diseases; Baylor Coll Of Med, Internal Medicine | Baylor College of Medicine Program

    • Medical School: New York Med Coll- Valhalla Ny | New York Medical College

    Is Dr. Mahmarian board certified in Cardiologist?

    Yes, Dr. John Mahmarian, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Mahmarian speak?

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

    • English

    What conditions does Dr. Mahmarian treat?

    As a Cardiologist, Dr. Mahmarian 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. Mahmarian. 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:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Upper body pain

    ICD-10 Codes:

    • R079: Chest pain, unspecified

    Also known as:

    • Hardening of the Arteries in the Heart without Chest Pain
    • Atherosclerosis
    • Coronary Artery Disease
    • Silent Coronary Artery Disease
    • Asymptomatic Atherosclerosis

    ICD-10 Codes:

    • I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris

    Also known as:

    • Other Abnormal Heart Test Results
    • Abnormal EKG
    • Heart Disease
    • Heart Health Tests
    • Irregular Cardiovascular Function Study
    • Unusual Heart Exam Findings
    • Heart Disease Diagnosis
    • Irregular Electrocardiogram
    • Unusual Heart Rhythm Test
    • ECG Abnormalities

    ICD-10 Codes:

    • R9439: Abnormal result of other cardiovascular function study
    • R9431: Abnormal electrocardiogram [ECG] [EKG]

    Also known as:

    • Pre-Procedure Heart Examination
    • Pre-Surgery Cardiac Checkup
    • Heart Health Assessment (Before Procedure)
    • Cardiovascular Clearance Exam

    ICD-10 Codes:

    • Z01810: Encounter for preprocedural cardiovascular examination

    Also known as:

    • Atrial Fibrillation
    • Afib
    • A-fib
    • Irregular heart rhythm
    • Persistent atrial fibrillation

    ICD-10 Codes:

    • I480: Paroxysmal atrial fibrillation
    • I4819: Other persistent atrial fibrillation
    • I4891: Unspecified atrial fibrillation

    Also known as:

    • Shortness of Breath
    • Breathing Problems
    • Dyspnea
    • Difficulty breathing
    • Breathlessness

    ICD-10 Codes:

    • R0609: Other forms of dyspnea
    • R0602: Shortness of breath

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Thoracic Aortic Aneurysm
    • Ascending Aortic Aneurysm
    • Aortic Aneurysm
    • Familial thoracic aortic aneurysm and dissection
    • Chest Aorta Aneurysm
    • Thoracic Aorta Bulge
    • Enlarged Thoracic Aorta
    • Bulging Ascending Aorta
    • Weakened Ascending Aorta
    • Ascending Aorta Dilation

    ICD-10 Codes:

    • I712: Thoracic aortic aneurysm, without rupture
    • I7121: Aneurysm of the ascending aorta, without rupture

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Pectoral pain

    ICD-10 Codes:

    • R0789: Other chest pain

    Also known as:

    • Other High Cholesterol
    • Cholesterol
    • Triglycerides
    • Other hyperlipidemia
    • Other high lipids
    • Dyslipidemia

    ICD-10 Codes:

    • E7849: Other hyperlipidemia

    Also known as:

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

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Also known as:

    • Abnormal Heart Imaging Results
    • Heart Health Tests
    • Abnormal cardiac scan
    • Unusual heart test results
    • Abnormal coronary imaging

    ICD-10 Codes:

    • R931: Abnormal findings on diagnostic imaging of heart and coronary circulation

    Which procedures does Dr. Mahmarian perform as a Cardiologist?

    As a Cardiologist, procedures performed by a Dr. John Mahmarian may include:

    For detailed information, please contact Dr. Mahmarian's office.

    Does Dr. Mahmarian accept my insurance?

    Dr. Mahmarian accepts most major insurance plans. Important: Please call our office at (713) 441-1100 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Mahmarian accept in Houston, TX?

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

    Top Insurances

    • Aetna

    • Blue Cross Blue Shield

    • Blue Cross Blue Shield of Michigan

    • CMS

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Express Scripts

    • Medicare

    • Scan Health Plan

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Mahmarian's office located?

    Dr. John Mahmarian's Primary Practice

    6565 Fannin St # 577

    Houston, TX 77030

    (713) 441-1100

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    Dr. John Mahmarian's Practice 2

    16605 Southwest Fwy

    Sugar Land, TX 77479

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    Dr. John Mahmarian's Practice 3

    6445 Main St

    Houston, TX 77030

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

    Dr. Mahmarian's National Provider Identifier (NPI) number is 1114957511.

    What common questions do patients ask about Dr. Mahmarian?

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

    What is Dr. John Mahmarian's specialty?

    Dr. Mahmarian is a Cardiologist near Houston, TX. An internist specializing in cardiovascular diseases focuses on the diagnosis and management of complex heart and blood vessel conditions, including heart attacks and life-threatening arrhythmias. Contact Dr. Mahmarian to book an appointment today.

    Is this Dr. John Mahmarian affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Mahmarian is affiliated with Houston Methodist Hospital which is a Castle Connolly Top Hospital. 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

    Where can I learn more about Cardiologist?

    Explore Cardiologist 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 John Mahmarian accepting new patients in Houston, TX?

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

    Does Dr. John Mahmarian offer online booking?

    Please contact Dr. Mahmarian's office at (713) 441-1100 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Mahmarian?

    Please contact Dr. Mahmarian's office at (713) 441-1100 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Mahmarian have?

    Dr. John Mahmarian is certified by the American Board of Internal Medicine.

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