Athanasios Thomaides, MD
Provider is directly employed by MedStar Health

4.8 out of 5 (439 reviews)

Specialities: Cardiology, Electrophysiology

Languages: Greek, English

(301) 877-5680

About me

Athanasios Thomaides, MD, is a cardiac electrophysiologist at MedStar Heart and Vascular Institute.  

He is certified in internal medicine, cardiovascular disease, and cardiac electrophysiology by the American Board of Internal Medicine and is a Fellow of the American College of Cardiology (FACC) and a Fellow of the Heart Rhythm Society (FHRS).

Dr. Thomaides received his bachelor’s degree in mathematics at the University of California, Los Angeles. He then worked for two years in clinical research at MD Anderson Cancer Center in Houston, Texas prior to attending medical school at the University of Texas Health Science Center at San Antonio.  He completed his internal medicine residency at Indiana University School of Medicine and his cardiology fellowship at Temple University Hospital in Philadelphia.  He then moved to Washington, D.C. where he completed a cardiac electrophysiology fellowship at MedStar Georgetown University Hospital/Washington Hospital Center.  

Upon completion of his training in 2015, Dr. Thomaides joined the faculty at MedStar Heart and Vascular Institute.  He evaluates and treats patients at MedStar Washington Hospital Center, MedStar Southern Maryland Hospital, and MedStar Georgetown University Hospital.  Additionally, he serves as the Associate Program Director of the Cardiac Electrophysiology Fellowship program and as Assistant Professor of Medicine at Georgetown University School of Medicine.

As a cardiac electrophysiologist, Dr. Thomaides specializes in heart rhythm disorders.  These conditions include atrial fibrillation, atrial flutter, supraventricular tachycardia (SVT), ventricular tachycardia/fibrillation (VT/VF), atrioventricular block (AV or complete heart block), sinus node dysfunction, and syncope, among others. Treatment approaches vary, and may include pharmacologic agents and/or minimally invasive procedures when necessary.  Dr. Thomaides performs a broad range of procedures including catheter ablation for atrial fibrillation, atrial flutter, ventricular tachycardia, and SVT.  He implants permanent pacemakers and defibrillators, as well as cardiac resynchronization therapy (CRT) systems to treat congestive heart failure.  He is also an expert and leader at MedStar in laser lead extraction, a procedure that involves removing old pacemaker or defibrillator leads using laser technology.

Dr. Thomaides participates in several electrophysiology research projects at MedStar and is currently developing a MedStar Atrial Fibrillation Registry, to track the safety and efficacy of all atrial fibrillation treatments performed across the MedStar organization.

Dr. Thomaides was born in New Jersey and he was raised in Greece. He returned to the United States during his teenage years to finish high school and pursue further education.  He currently lives in Northern Virginia with his wife, a pediatrician.  In their spare time, they enjoy cooking, traveling, staying fit, and spending time with close family and friends.  

Philosophy of Care

“Every patient is unique and requires a thoughtful and individualized approach in order to improve their health and quality of life.  I spend time with my patients and their families to truly understand their clinical scenario as well as their personal beliefs and perspectives.  Together, we come up with a personalized treatment plan at the time of consultation.

The Cardiac Electrophysiology Section at MedStar is a center of excellence.  We have grown with the community and with the latest technological advances to provide exceptional care for our patients. Our cardiac team is comprised of many dedicated professionals - cardiologists, anesthesiologists, nurse practitioners, nurses, technologists, and industry vendors; and we all work together with our patients as a team to achieve the best outcomes. 

Although heart rhythm conditions can often be complex and challenging, here at MedStar, we are with you every step of the way.”

Clinical areas of focus

  • Atrial Fibrillation
  • Cardiac Ablation
  • Cardiac Arrhythmias
  • Heart Racing
  • Implantable Defibrillator
  • Pacemaker
  • Palpitations
  • Supraventricular Tachycardia
  • Tachycardia
  • Watchman Device Implantation
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Conditions and procedures

Conditions I treat

  • Abnormal Electrocardiogram Ekg
  • Anomalous Atrioventricular Excitation
  • Arrhythmias During Pregnancy
  • Arrhythmias In Adults With Congenital Heart Diseases
  • Atrial Fibrillation
  • Atrial Flutter
  • Atrial Tachycardia
  • Atrioventricular Block
  • Atrioventricular Nodal Reentrant Tachycardia
  • Atrioventricular Reentrant Tachycardia
  • Bradycardia
  • Brugada Syndrome
  • Cardiac Arrhythmias
  • Cardiac Channelopathies
  • Cardiac Conduction Defects
  • Cardiac Device Infection
  • Cardiac Device Malfunction
  • Cardiac Sarcoidosis
  • Catecholaminergic Polymorphic Ventricular Tachycardia
  • Complete Atrioventricular Block
  • Complex Arrhythmia
  • Conduction Defects
  • Familial Arrhythmias
  • Family History Of Sudden Cardiac Death
  • First Degree Heart Block
  • Heart Racing
  • Lead Malfunction
  • Left Bundle Branch Block
  • Long Qt Syndrome
  • Lown Ganong Levine Syndrome
  • Pacemaker Infection
  • Pacemaker Malfunction
  • Palpitations
  • Paroxysmal Supraventricular Tachycardia
  • Paroxysmal Tachycardia
  • Paroxysmal Ventricular Tachycardia
  • Polymorphic Ventricular Tachycardia
  • Postural Tachycardia Syndrome
  • Pre Excitation Syndrome
  • Premature Atrial Contraction
  • Premature Beats
  • Premature Ventricular Contractions
  • Presyncope
  • Right Bundle Branch Block
  • Short Qt Syndrome
  • Sick Sinus Syndrome
  • Sinoatrial Node Dysfunction
  • Sinus Node Dysfunction
  • Supraventricular Tachycardia
  • Syncope
  • Tachycardia
  • Tachycardia Bradycardia Syndrome
  • Trifascicular Block
  • Type 1 Second Degree Heart Block
  • Type 2 Second Degree Heart Block
  • Vasovagal Syncope
  • Ventricular Arrhythmia
  • Ventricular Fibrillation
  • Ventricular Tachycardia
  • Wolff-Parkinson-White Syndrome
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Procedures I perform

  • 4D Flow Mri
  • Ablation Arrhythmogenic Focus
  • Ablation Av Node
  • Ablation For Supraventricular Tachycardia
  • Ablation For Ventricular Tachycardia
  • Atrial Fibrillation Ablation
  • Atrial Fibrillation Cryoablation
  • Atrial Fibrillation Radiofrequency Ablation
  • Cardiac Ablation
  • Cardiac Contractility Modulation Ccm
  • Cardiac Device Implant
  • Cardiac Devices
  • Cardiac Implantable Device Replacement
  • Cardiac Mapping
  • Cardioversion
  • Convergent Procedure
  • Defibrillator Malfunction
  • Holter Monitor
  • Implantable Cardiac Monitor Procedure
  • Implantable Defibrillator
  • Intracardiac Catheter Ablation
  • Intravenous Lead Extraction
  • Lariat Procedure
  • Laser Lead Extraction
  • Lead Extraction
  • Loop Recorder
  • Pacemaker
  • Pacemaker And Icd Interrogation
  • Pacemaker Placement
  • Pulmonary Vein Isolation
  • Radiofrequency Rhizotomy
  • Remote Cardiac Device Monitoring
  • Replacement Of Defibrillator
  • Resynchronization Therapy
  • Tilt Table Test
  • Transvenous Lead Extraction
  • Watchman Device Implantation
  • Wearable Defibrillator
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Practice locations

Distance from Change LocationEnter your Location

7501 Surratts Road
Clinton, MD, 20735

301-877-5677

Fax 301-877-5680

Get Directions

miles away

Fax 301-877-5680

7501 Surratts Road
Clinton, MD, 20735

301-877-5677

Fax 301-855-5344

Get Directions

miles away

Fax 301-855-5344

110 Irving Street Northwest
Washington, DC, 20010

301-877-5677

Fax 301-855-5344

Get Directions

miles away

Fax 301-855-5344

3800 Reservoir Road Northwest
Washington, DC, 20007

202-444-8833

Fax 877-303-1461

Get Directions

miles away

Fax 877-303-1461

24035 Three Notch Road
Hollywood, MD, 20636

301-877-5677

Fax 301-877-5677

Get Directions

miles away

Fax 301-877-5677

24035 Three Notch Road
Hollywood, MD, 20636

301-877-5677

Fax 301-855-5344

Get Directions

miles away

Fax 301-855-5344

Insurance

MedStar Medical Group accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Medical Group, please call your insurance company.

  • List of insurance plans we accept
    • Aetna Elect Choice/ EPO (Aetna Health Fund) Innovation Health: Network Only Plus
    • Aetna Quality Point of Service (POS)
    • Aetna USAccess (POS)
    • Aetna Student Health Insurance
    • Aetna Medicare Advantage HMO & PPO Plans
    • CFBCBS BlueChoice HMO
    • CFBCBS Blue Choice Opt Out Plus Open Access (POS)
    • CFBCBS Maryland Point of Service Plan (MPOS)
    • CFBCBS Federal Employee Program (Std. & Basic PPO)
    • CFBCBS Maryland Indemnity or PPO
    • CFBCBS (NCA) Indemnity
    • CIGNA HMO & Network (HMO)
    • CIGNA POS/Network POS
    • Great-West Healthcare POS/CIGNA
    • CIGNA Indemnity
    • Coventry Health Care of Virginia
    • Coventry of Delaware HMO/PPO
    • First Health PPO
    • FIRST HEALTH
    • Tricare Prime
    • Tricare Standard
    • Tricare Extra (Indemnity)
    • Tricare for Life (Medicare Supplemental Plan)
    • MedStar Family Choice - Maryland Health Choice
    • MedStar Select (MedStar Associates' Plan)
    • MedStar Medicare Choice
    • United Healthcare Select HMO - EPO/NPP
    • United Healthcare Select Plus (POS)
    • United Healthcare Choice Plus
    • United Student Resources
    • M.D. IPA (HMO)
    • M.D. IPA Preferred (POS)
    • Optimum Choice Preferred (POS) & OCI Direct (HMO)
    • Mamsi Life & Health (Indem./PPO)
    • Aetna Worker's Compensation Network
    • Coventry Health Care National Network PPO
    • Private Health Care Systems (PHCS) (PPO)
    • United Healthcare Options (PPO) (includes Empire PPO, GEHA, Compass Rose)
    • OneNet PPO, Inc.
    • United Healthcare Choice
    • United Healthcare Core Essential (HMO)
    • Optimum Choice
    • United Healthcare Navigate
    • United Healthcare Compass (HMO)
    • CIGNA HMO Open Access (OA)
    • Network OA
    • POS OA & OA Plus
    • CIGNA EPO
    • PPO and PPO Plus
    • Choice Fund PPO
    • CFBSBC Blue Preferred PPO
    • HealthyBlue PPO
    • CFBCBS Blue Choice Opt Out Open Access
    • BlueChoice Open Access
    • Blue Choice Advantage & Healthy Blue (HMO, POS)
    • Aetna Traditional Choice (PPO)
    • Innovation Health: Indemnity
    • Aetna Open Choice (PPO)
    • Innovation Health: PPO
    • Aetna Managed Choice (POS)
    • Innovation Health: POS Plus
    • Aetna Elect Choice/ Open Access (POS)
    • Innovation Health: Open Network Only Plus
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • Innovation Health: POS
    • Open HMO
    • Opoen HMO Option
    • Open EPO Plus
    • Aetna Managed Choice Open Access (POS)
    • Choice POS & Choice POS II
    • Innovation Health: Open POS Plus
    • Open POS II
    • Aetna HMO
    • Select HMO/HealthFund/Health Network
    • Aetna Innovations: HMO & EPO Plus

Education

Board Certification: American Board of Internal Medicine, Cardiovascular Disease

Board Certification: American Board of Internal Medicine, Clinical Cardiac Electrophysiology

Fellowship Program: MedStar Georgetown Univ Hosp/Washington Hosp Ctr (2015)

Fellowship Program: Temple University Hospital School of Medicine (2013)

Residency Program: Indiana University School of Medicine (2009)

Medical School: University of Texas Medical School at San Antonio (2006)

Ratings and reviews

  • Provider explained things understandably

    4.8
  • Provider listened carefully

    4.8
  • Provider gave easy to understand instructions

    4.8
  • Provider knew medical history

    4.8
  • Provider showed respect

    4.9
  • Provider spent enough time with patient

    4.8
  • Aug 17, 2021

    Very professional was also very reassuring. I felt very valued as a person and a patient. I was made very comfortable with the discussion and choices that I made with the doctor. I feel very good with the choices I made. Doctor was very professional and he exceeded my expectations

  • Aug 17, 2021

    Dr THOMAIDES is the greatest. He's kind, very professional, patient, and intelligent. I have a handful of doctors and he's my favorite.

  • Aug 13, 2021

    He was very helpful to me and his explanation of the test were on point