Robert Alex Lager, MD| Cardiovascular Disease, Interventional Cardiology | MedStar Health
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Robert Alex Lager

Robert Alex Lager, MD
Provider is directly employed by MedStar Health

5 out of 5 (1667 reviews)

Specialties: Cardiovascular Disease, Interventional Cardiology, Cardiology

Languages: English

About me

Robert Lager, MD, is a clinical cardiologist at MedStar Washington Hospital Center. He serves as Physician Lead of MedStar Cardiology Associates, a 43-physician cardiology group at MedStar Health. He is Director of MedStar Ambulatory Services for the Southern region of the MedStar Health system, which includes the District of Columbia and Southern Maryland. Dr. Lager worked as an interventional cardiologist for 20 years and has performed over 10,000 cardiac catheterizations. He has served as a national proctor for Abbott and Medtronic, training physicians from around the nation how to perform the transradial wrist approach for catheterization. In addition, he has trained many cardiology fellows in the interventional cardiology fellowship program at MedStar Washington Hospital Center,and contributed as a clinical investigator in multiple interventional cardiology research studies involving new devices and interventional techniques

Dr. Lager specializes in conditions related to coronary artery disease, peripheral vascular disease, and structural heart disease. He also sees patients for hypertension, atrial fibrillation, and cholesterol disorders, with a strong interest in preventive cardiovascular medicine.

Dr. Lager received his medical degree from the University of Pennsylvania before completing his internship training and residency training at Massachusetts General Hospital. He then completed a general cardiology and interventional cardiology fellowship at Beth Israel Deaconess Medical Center as well as a fellowship in vascular medicine at St. Elizabeth’s Hospital of Boston. Throughout his fellowship training, Dr. Lager served as Clinical Instructor at Harvard Medical School. Dr. Lager appreciates referrals from physicians and hospital centers for patients  with all types of cardiac problems, including coronary artery disease,  hypertension and cholesterol disorders. When not practicing cardiology, Dr. Lager enjoys regular exercise with his family and pursues his passion for travel.

Philosophy of Care

“I live by the golden rule that I treat patients like I would treat my family members or treat myself. I have found that this simple rule has guided me along my journey to develop an empathetic and patient-centered practice.

“Patients have better outcomes when they are informed and educated. For this reason, I’m very much about communication and transparency. An educated patient is generally a healthy patient. I also ask patients to take ownership of their care and urge them to live a healthy lifestyle.

“Empathy and taking the time to listen are a big part of my practice. The history and the story that one gets by listening to the patient are as valuable as any objective testing that we do. Above all, I want each of my patients to feel that they are my only patient.”

Clinical areas of focus

  • Ablation For Atrial Fibrillation
  • Angiogram
  • Cardiac Catheterization
  • Cardiovascular Stress Testing
  • Electrocardiogram
  • Holter Monitoring
  • Stress Test
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Conditions and procedures

Conditions I treat

  • Abnormal Breathing
  • Abnormal Heart Rhythm
  • Acute Bacterial Endocarditis
  • Acute Endocarditis
  • Acute Ischemic Heart Diseases
  • Advanced Heart Failure
  • Advanced Heart Failure (ADHF)
  • Advanced Heart Failure Care
  • Amyloidosis
  • Angina Pectoris
  • Aortic Aneurysm
  • Aortic Regurgitation
  • Aortic Stenosis
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Artery Disorders
  • Atherosclerosis
  • Atherosclerosis Of Aorta
  • Atrial Fibrillation
  • Atrial Flutter
  • Atrial Septal Defect
  • Atrioventricular Block
  • Bicuspid Aortic Valve
  • Bradycardia
  • Bundle Branch Block
  • Cardiac Arrest
  • Cardiac Arrhythmias
  • Cardiac Murmurs
  • Cardiometabolic Disorders
  • Cardiomyopathy
  • Carotid Artery Occlusion
  • Catecholaminergic Polymorphic Ventricular Tachycardia
  • Chest Pain
  • Chronic Thromboembolic Pulmonary Hypertension
  • Complications Of Cardiac And Vascular Prosthetic Devices
  • Congenital Heart Disease
  • Congenital Heart Valve Defects
  • Congenital Malformations Of Cardiac Chambers And Connections
  • Congenital Malformations Of Great Arteries
  • Congenital Malformations Of Great Veins
  • Congenital Malformations Of Heart
  • Congenital Malformations Of Pulmonary And Tricuspid Valves
  • Coronary Artery Disease
  • Deep Vein Thrombosis
  • Disorders Of Lipoprotein Metabolism And Lipidemias
  • Dyspnea On Exertion
  • Eisenmenger Syndrome
  • Electrical Conduction Disorders
  • Fibromuscular Dysplasia
  • Heart Attack
  • Heart Disease
  • Heart Disease In Women
  • Heart Murmur
  • High Blood Pressure
  • High Cholesterol Management
  • Hypertension
  • Hypertrophic Cardiomyopathy
  • Hypotension
  • Irregular Heartbeat
  • Ischemic Cardiomyopathy
  • Ischemic Heart Disease
  • Kawasaki Disease
  • Left Ventricular Hypertrophy
  • Long Term Drug Therapy
  • Mitral Regurgitation
  • Mitral Valve Disease
  • Mitral Valve Prolapse
  • Mitral Valve Stenosis
  • Myocardial Infarction
  • Myopathies
  • Nonrheumatic Mitral Valve Disease
  • Palpitations
  • Paroxysmal Ventricular Tachycardia
  • Patent Ductus Arteriosus
  • Patent Foramen Ovale
  • Pericardium Diseases
  • Peripheral Vascular Diseases
  • Polyarteritis Nodosa
  • Premature Atrial Contractions
  • Premature Atrial Contractions (PACS)
  • Premature Ventricular Contractions
  • Presence Of Cardiac And Vascular Implants
  • Pulmonary Edema
  • Pulmonary Embolism
  • Pulmonary Heart Disease
  • Pulmonary Valve Disorders
  • Pulmonary Vessel Disease
  • Restrictive Cardiomyopathy
  • Retinal Vein Occlusion
  • Rheumatic Heart Disease
  • Rheumatic Heart Diseases
  • Rheumatic Tricuspid Valve Disease
  • Sarcoidosis
  • Secondary Hypertension
  • Sick Sinus Syndrome
  • Supraventricular Tachycardia
  • Syncope
  • Tachycardia
  • Transient Cerebral Ischemic Attacks
  • Tricuspid Stenosis
  • Valve Disease With Congestive Heart Failure
  • Venous Embolism
  • Ventricular Aneurysm
  • Ventricular Fibrillation
  • Ventricular Tachycardia
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Procedures I perform

  • Ablation For Atrial Fibrillation
  • Absolute Quantitation Of Myocardial Blood Flow
  • Angiogram
  • Aortic Valve Repair
  • Atrial Septal Defect Repair
  • Automated External Defibrillator
  • Cardiac Catheterization
  • Cardiac Catheterization Interpretation
  • Cardiac Loop Recorder Placement
  • Cardiac Magnetic Resonance Imaging
  • Cardiac Resynchronization Therapy
  • Cardiovascular Stress Testing
  • Coronary Artery Stenting
  • Electrocardiogram
  • Electrophysiologic Study
  • Electrophysiology Study
  • Event Monitoring
  • Extended Ecg Analysis
  • External Electrocardiographic Recording
  • Heart Biopsy
  • Heart Pacemaker Implantation
  • Heart Transplant
  • Holter Monitoring
  • Invasive Hemodynamic Monitoring
  • MRA With Contrast
  • Myocardial Perfusion Imaging
  • Pacemaker Insertion
  • Pacemaker Pulse Generator Insertion
  • Permanent Pacemaker Insertion
  • Stress Echocardiography
  • Stress Test
  • Subcutaneous Cardiac Rhythm Monitor System Evaluation
  • Transesophageal Echocardiography
  • Transthoracic Echocardiography
  • Ventricular Tachycardia Ablation
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Practice locations

Distance from Change Location Enter your Location

106 Irving St NW
Ste 4800
Washington, DC, 20010

202-877-5800
Get Directions

miles away

Fax 202-877-5885

1133 21st Street Northwest
Suite 700
Washington, DC, 20036

202-416-2000
Get Directions

miles away

Fax 202-416-2007

8401 Connecticut Avenue
Penthouse Ste
Chevy Chase, MD, 20815

202-416-2000
Get Directions

miles away

Fax 202-416-2007

Insurance

This list represents the major payors accepted by MedStar Health.

NOTE: Payor contracts change and not all plans associated with a payor may be covered. Payors may offer multiple plans. If you have a question related to your insurance, please contact your insurance plan directly. Contact information is located on your health insurance ID card.

*Denotes limited participation. Specific providers and practices may NOT be participating. Please contact your insurance plan directly.

  • List of insurance plans we accept
    • Aetna
    • CareFirst BlueCross BlueShield of Maryland
    • Cigna Health Care
    • Kaiser Permanente*
    • MedStar Select (Administered by CareFirst)
    • United HealthCare
    • Aetna
    • CareFirst BlueCross BlueShield of Maryland
    • Healthspring
    • Humana
    • Medicare & Railroad Medicare
    • United HealthCare
    • Aetna Better Health of Maryland *
    • Medical Assistance/Medicaid
    • MedStar Family Choice MD
    • Priority Partners *
    • United HealthCare Community Health Plan MD
    • Wellpoint MD
    • AmeriHealth Caritas
    • Health Services For Children With Special Needs (HSCSN)
    • Medical Assistance/Medicaid
    • MedStar Family Choice DC
    • Johns Hopkins Employer Health Programs *
    • Johns Hopkins US Family Health Plan *
    • MultiPlan
    • Private Healthcare Systems
    • Tricare/Humana Military
    • VA Community Care Network (VACCN)

Education

Board Certification: American Board of Internal Medicine, Cardiovascular Disease

Fellowship: Beth Israel Deaconess Medical Center (2002)

Fellowship: St. Elizabeth's Medical Center (2002)

Fellowship: Beth Israel Deaconess Medical Center (2001)

Residency: Massachusetts General Hospital (1998)

Medical School: University of Pennsylvania (1995)

Awards

  • Washingtonian Top Doc 2025

Hospital affiliations

Ratings and reviews

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

    5
  • Extent to which the care provider listened to you

    5
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    5
  • Provider included you in decisions

    5
  • Concern the care provider showed for your questions or worries

    5
  • Likelihood of recommending this care provider to others

    5
  • Jun 29, 2026

    Dr lagar is a good listener

  • Jun 22, 2026

    Dr. Lager demonstrated that he is not only an excellent cardiologist but an overall good, thorough clinician. He looked at other diagnoses I have and helped explain how they might be interacting with my cardiac issues.

  • Jun 21, 2026

    Dr. Lager is an extraordinary doctor, well informed on the latest studies, highly responsive to concerns and questions, and caring. I consider myself fortunate to have his care.