Athanasios Thomaides, MD| Cardiology, Electrophysiology | MedStar Health
Athanasios Thomaides

Athanasios Thomaides, MD
Provider is directly employed by MedStar Health

4.9 out of 5 (1226 reviews)

Specialties: 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 cardiovascular disease and clinical 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 continued his training in Washington, D.C. where he completed a cardiac electrophysiology fellowship at MedStar Health/Georgetown-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 training program, as Associate Professor of Medicine at Georgetown University School of Medicine, and as Director of Electrophysiology Quality and Safety.

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 physiologic pacing systems (CRT and conduction system pacing) to treat patients with congestive heart failure. He also specializes in leadless pacemaker technologies as well as extravascular device implantation (EV ICD). He is an expert and leader at MedStar Health 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 Health. He serves as the principal investigator and sub-investigator in national and international clinical studies testing new ablative modalities, among other research projects. He is the recipient of industry grants that support his research.   


Dr. Thomaides was born in New Jersey and 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, and their children. 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 Health 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 Health, 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

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
  • 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
Show Less

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
Show Less

Practice locations

Distance from Enter your Location

7501 Surratts Road
Suite 304
Clinton, MD, 20735

301-877-5677

Fax 301-877-4469

Get Directions

miles away

Fax 301-877-4469

3800 Reservoir Road Northwest
Building 5
Washington, DC, 20007

202-877-7685

Fax 855-430-5304

Get Directions

miles away

Fax 855-430-5304

24035 Three Notch Road
Hollywood, MD, 20636

301-877-5677

Fax 855-430-5304

Get Directions

miles away

Fax 855-430-5304

110 Irving Street Northwest
Suite 5A-12
Washington, DC, 20010

301-877-5677

Fax 855-430-5304

Get Directions

miles away

Fax 855-430-5304

Insurance

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

    • Aetna Medicare Advantage HMO & PPO Plans

      Innovation Health: Open POS Plus

      Innovation Health: Open POS II

      Aetna Managed Choice Open Access (POS)

      Aetna Choice POS & Choice POS II

      Innovation Health: POS Plus

      Aetna Managed Choice (POS)

      Innovation Health: POS

      Aetna Open HMO/Open HMO Option/Open EPO Plus

      Aetna HMO-Open Access/Select OA

      Aetna HealthFund/Health Network Option OA

      Innovation Health: HMO & EPO Plus

      Aetna Select HMO/HealthFund/Health Network

      Aetna HMO

      Innovation Health: Open Network Only Plus

      Aetna Elect Choice/ Open Access (POS)

      Innovation Health: Network Only Plus

      Aetna Elect Choice/ EPO (Aetna Health Fund)

      Innovation Health: Indemnity

      Aetna Traditional Choice (PPO)

      Aetna Student Health Insurance

      Aetna Signature Administrator PPO/TPA

      Aetna Quality Point of Service (POS)

      Innovation Health: PPO

      Aetna Open Choice (PPO)

    • Cigna TotalCare (HMO D-SNP)

      Cigna Preferred Medicare

      Cigna Alliance Medicare (HMO) |

      Cigna Achieve Medicare (HMO C-SNP)

      Cigna True Choice Plus Medicare (PPO)

      Cigna True Choice Medicare (PPO)

      Cigna POS/Network POS

      Cigna Indemnity

      Cigna POS Open Access & Open Access Plus

      Cigna Network Open Access

      Cigna HMO Open Access

      Cigna PPO and PPO Plus

      Cigna EPO

      Cigna Choice Fund PPO

      Cigna HMO & Network (HMO)

      Great-West Healthcare POS/CIGNA

    • Veterans Affairs Community Care Network (VA CCN)

    • United Medicare Advantage DSNP District of Columbia

      United Student Resources

      United Select Plus (POS)

      United Select HMO - EPO/NPP

      United Options (PPO) (includes Empire PPO)

      United Golden Rule

      United GEHA (for all other states) Compass Rose

      D-SNP)

      I-SNP

      United Nursing Home Plan (C-SNP

      United Erickson Advantage Plans

      United Choice Plus

      United Choice

      United Mamsi Life & Health

      United Core Essential (HMO)

      United MD IPA Preferred (POS)

      United MD IPA (HMO)

      UnitedHealthcare Individual Exchange Plans

      United Community Plan - Maryland Health Choice Program

      United Optimum Choice Preferred (POS) & OCI Direct (HMO)

      United Optimum Choice

      United Navigate

      United Group Medicare Advantage Plans

      United AARP Medicare Complete

    • MedStar Family Choice DC Healthy Families

      MedStar Family Choice DC Healthcare Alliance

      MedStar Family Choice - Maryland Health Choice

    • Kaiser Permanente Signature-Added Choice

      Kaiser Signature

      Kaiser HMO Plus and DHMO Plus Member

      Kaiser Select-Added Choice

      Kaiser Select

      Kaiser Medicare Plus

      Kaiser Medicare Advantage Signature and Select

      Kaiser Flexible Choice

      Kaiser Maryland Medicaid MCO

      Virginia Premier

    • HumanaChoice PPO

      HumanaChoice Honor’s plan PPO

    • Health Services for Children with Special Needs (HSCSN)

    • Choice Care Network/HUMANA (PPO)

    • AmeriHealth Caritas DC Healthy Families

      AmeriHealth Caritas DC Healthcare Alliance

    • Amerigroup DC Healthy Families

      Amerigroup DC Alliance

      WellPoint Maryland - Maryland Health Choice

    • WellPoint Maryland

    • Veterans Affairs Community Care Network

    • Uniformed Services Family Health Plan (USFHP)

      Priority Partners - Maryland Health Choice

    • Private Health Care Systems (PHCS) (PPO)

    • Police and Fire Clinic

    • Traditional Medicare Fee for Service

    • Medicaid - Virginia

      Medicaid - Maryland

      Medicaid - District of Columbia

    • Tricare for Life East

      Tricare Reserve Select

      Tricare East Select

      Tricare East Prime

    • Maryland Point of Service Plan (MPOS)

      HealthyBlue PPO

      Federal Employee Program (Std/Basic PPO/Blue Focus)

      CareFirst NASCO

      CareFirst MedStar Select PPO

      CareFirst MedStar PPO

      CareFirst Maryland Indemnity or PPO

      CareFirst Group Medicare Advantage prescription drug benefit (PPO)

      CareFirst Group Medicare Advantage

      CareFirst BC/BS Advantage Core/Enhanced

      CareFirst Blue Card Program (Out-of-area BCBS plans)

      CareFirst Administrators

      CareFirst (NCA) Indemnity

      Carefirst BlueChoice Opt Out Plus Open Access (POS)

      Carefirst Healthy Blue (HMO/POS)

      Carefirst BlueChoice Opt Out Open Access

      Carefirst BlueChoice Open Access

      Carefirst BlueChoice HMO

      Carefirst EPO

      Carefirst Blue Preferred PPO

    • Coventry Health Care of Virginia

      First Health PPO

      Coventry of Delaware HMO/PPO

      Coventry Health Care National Network PPO

Education

Board Certification: American Board of Internal Medicine, Internal Medicine

Residency: Temple University Hospital (2013)

Residency: Indiana University School Of Medicine (2009)

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

Ratings and reviews

  • Explanations the care provider gave you about your problem or condition

    4.9
  • Extent to which the care provider listened to you

    4.9
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    4.9
  • Provider included you in decisions

    4.9
  • Concern the care provider showed for your questions or worries

    4.9
  • Likelihood of recommending this care provider to others

    4.9
  • Jan 17, 2025

    Dr Thomaides is an excellent doctor!! I think there was some confusion because of all the prior folks I talked to without knowing who was the best person to explain my problem.

  • Jan 15, 2025

    Service was great.

  • Jan 10, 2025

    Dr. Thomaides is very caring and professional.