Robert Alex Lager, MD| Cardiology, Internal Medicine | MedStar Health
Robert Alex Lager

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

5 out of 5 (1438 reviews)

Specialties: Cardiology, Internal Medicine

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
  • Atrial Flutter
  • Cardiac Catheterization
  • Cardiomyopathy
  • Cardiovascular Stress Testing
  • Chest Pain
  • Computerized Tomography (CT) Scan
  • Coronary Artery Disease
  • Electrocardiogram
  • Heart Disease
  • Heart Murmur
  • Holter Monitoring
  • Ischemic Cardiomyopathy
  • Myocardial Infarction
  • Stress Test
Show More

Conditions and procedures

Conditions I treat

  • Abnormal Body Structure Imaging
  • Abnormal Breathing
  • Abnormal Function Study Results
  • Abnormal Heart Rhythm
  • Acute Bacterial Endocarditis
  • Acute Endocarditis
  • Acute Ischemic Heart Diseases
  • Acute Myocardial Infarction
  • Advanced Heart Failure
  • Advanced Heart Failure (ADHF)
  • Advanced Heart Failure (AHF)
  • Advanced Heart Failure Care
  • Amphetamine Addiction
  • Amyloidosis
  • Angina
  • Angina Pectoris
  • Aortic Aneurysm
  • Aortic Regurgitation
  • Aortic Stenosis
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Arterial Fibrillation
  • Artery Disorders
  • Atherosclerosis
  • Atherosclerosis Of Aorta
  • Atrial Fibrillation
  • Atrial Flutter
  • Atrial Septal Defect
  • Atrioventricular Block
  • Benign Neoplasm Of Intrathoracic Organs
  • Bicuspid Aortic Valve
  • Bleeding Disorders
  • Bradycardia
  • Bundle Branch Block
  • Cardiac Arrest
  • Cardiac Arrhythmias
  • Cardiac Murmurs
  • Cardiometabolic Disorders
  • Cardiomyopathy
  • Carotid Artery Occlusion
  • Catecholaminergic Polymorphic Ventricular Tachycardia
  • Chest Pain
  • Chronic Kidney Disease
  • Chronic Thromboembolic Pulmonary Hypertension
  • Circulatory System Complications
  • Circulatory System Disorders
  • Clotting Disorders
  • Complications Of Cardiac And Vascular Prosthetic Devices
  • Congenital Heart Disease
  • Congenital Heart Valve Defects
  • Congenital Malformation Syndromes Affecting Multiple Systems
  • Congenital Malformations Of Cardiac Chambers And Connections
  • Congenital Malformations Of Great Arteries
  • Congenital Malformations Of Great Veins
  • Congenital Malformations Of Heart
  • Congenital Malformations Of Musculoskeletal System
  • Congenital Malformations Of Pulmonary And Tricuspid Valves
  • Congenital Malformations Of Trachea And Bronchus
  • Coronary Artery Disease
  • Cough
  • Deep Vein Thrombosis
  • Disorders Of Lipoprotein Metabolism And Lipidemias
  • Dyspnea On Exertion
  • Eisenmenger Syndrome
  • Electrical Conduction Disorders
  • Family History Of Malignant Neoplasm
  • Family History Of Specific Disorders
  • Fibromuscular Dysplasia
  • Heart Attack
  • Heart Disease
  • Heart Disease In Women
  • Heart Murmur
  • High Blood Pressure
  • High Cholesterol Management
  • Hypertension
  • Hypertrophic Cardiomyopathy
  • Hypotension
  • Intracranial Aneurysm
  • Irregular Heartbeat
  • Ischemic Cardiomyopathy
  • Ischemic Heart Disease
  • Kawasaki Disease
  • Left Ventricular Hypertrophy
  • Liver Enzyme Abnormalities
  • Long Term Drug Therapy
  • Mitral Regurgitation
  • Mitral Valve Disease
  • Mitral Valve Prolapse
  • Mitral Valve Stenosis
  • Multiple Sclerosis
  • Myocardial Infarction
  • Myopathies
  • Nervous And Musculoskeletal Symptoms
  • Nonrheumatic Mitral Valve Disease
  • Obesity
  • Pain In Throat And Chest
  • Palpitations
  • Paroxysmal Ventricular Tachycardia
  • Patent Ductus Arteriosus
  • Patent Foramen Ovale
  • Pericardium Diseases
  • Peripheral Vascular Diseases
  • Personal History Of Diseases And Conditions
  • Personal Risk Factors
  • Polyarteritis Nodosa
  • Postprocedural States
  • Precerebral Artery Occlusion
  • Premature Atrial Contraction
  • Premature Atrial Contractions
  • Premature Atrial Contractions (PACS)
  • Premature Ventricular Contractions
  • Presence Of Cardiac And Vascular Implants
  • Primary Sclerosing Cholangitis
  • Problems Related To Lifestyle
  • Pulmonary Edema
  • Pulmonary Heart Disease
  • Pulmonary Valve Disorders
  • Pulmonary Vessel Disease
  • Respiratory Disorders
  • Restrictive Cardiomyopathy
  • Retinal Vein Occlusion
  • Rheumatic Heart Disease
  • Rheumatic Heart Diseases
  • Rheumatic Tricuspid Valve Disease
  • Sarcoidosis
  • Secondary Hypertension
  • Shock
  • Sick Sinus Syndrome
  • Sleep Disorders
  • Subcortical Infarction
  • Supraventricular Tachycardia
  • Syncope
  • Systemic Connective Tissue Involvement
  • Systemic Lupus Erythematosus
  • Tachycardia
  • Thyrotoxic Crisis
  • Transient Cerebral Ischemic Attacks
  • Transplanted Organ And Tissue Status
  • Tricuspid Stenosis
  • Turner Syndrome
  • Valve Disease With Congestive Heart Failure
  • Venous Embolism
  • Ventricular Aneurysm
  • Ventricular Fibrillation
  • Ventricular Tachycardia
  • Vision Disturbances
Show All Show Less

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
  • Carotid Artery Aneurysm Repair
  • Computerized Tomography (CT) Scan
  • Coronary Artery Stenting
  • Echocardiography
  • 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
  • Kinesiology Analysis
  • Mesenteric Angiography
  • MRA With Contrast
  • Myocardial Perfusion Imaging
  • Pacemaker Insertion
  • Pacemaker Pulse Generator Insertion
  • Permanent Pacemaker Insertion
  • Popliteal Artery Entrapment Syndrome Treatment
  • Pulmonary Artery Stenosis Repair
  • Stress Echocardiography
  • Stress Test
  • Subcutaneous Cardiac Rhythm Monitor System Evaluation
  • Transesophageal Echocardiography
  • Transthoracic Echocardiography
  • Unlisted Gastroenterology Procedure
  • Ventricular Tachycardia Ablation
Show All button Press enter to expand Show Less

Practice locations

Distance from Change LocationEnter your Location

106 Irving St NW
Ste 4800
Washington, DC, 20010

202-877-5800

Fax 202-877-5885

Get Directions

miles away

Fax 202-877-5885

8401 Connecticut Avenue
Penthouse Ste
Chevy Chase, MD, 20815

202-416-2000

Fax 202-416-2007

Get Directions

miles away

Fax 202-416-2007

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

202-416-2000

Fax 202-416-2007

Get Directions

miles away

Fax 202-416-2007

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.

  • List of insurance plans we accept
    • Tricare Reserve Select
    • CareFirst Blue Choice Opt Out Open Access
    • BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
    • Cigna Alliance Medicare (HMO)
    • Anthem BCBS of VA HealthKeepers Plus
    • AmeriHealth Caritas DC Healthy Families
    • United Healthcare Select Plus (POS)
    • Private Fee-for-Service Plans (PFFS)
    • Aetna Signature Administrator PPO/TPA
    • Private Health Care Systems (PPO)
    • Erickson Advantage Plans
    • IH-Open POS II
    • M.D. IPA (HMO)
    • Optimum Choice
    • Aetna Classic 3500
    • Aetna Student Health Insurance
    • IH-Open EPO Plus
    • Cigna Achieve Medicare (HMO C-SNP)
    • United Student Resources
    • CareFirst BlueChoice HMO
    • CIGNA HMO Open Access
    • United Healthcare Community Plan - VA Medicaid MCO
    • Johns Hopkins Advantage MD HMO
    • Anthem Federal Employee Program Standard
    • CIGNA PPO
    • Options PPO Cardiac Global
    • Aetna Quality Point of Service (POS)
    • Anthem BCBS Medi Blue Plus
    • IH-EPO Plus
    • MD IPA (HMO) & MD IPA Preferred Cardiac Global
    • Aetna Managed Choice Open Access (POS)
    • IH-Open HMO Option
    • CareFirst Maryland Point of Service Plan
    • Network OA
    • IH-Network Only Plus
    • Johns Hopkins Advantage MD PLUS PPO
    • CIGNA Indemnity
    • TriWest Healthcare Alliance
    • Kaiser Permanente Flexible Choice POS Cardiac Global
    • Aetna Elect Choice/ Open Access (POS)
    • Kaiser Permanente Signature
    • IH-POS Plus
    • CareFirst Group Medicare Advantage
    • Aetna Better Health of MD
    • Jai Medical Systems - Maryland Health Choice
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • CIGNA HMO & Network (HMO)
    • Kaiser Permanente Select Cardiac Global
    • Aetna Advantage 6350
    • CareFirst Blue Choice Opt Out Plus Open Access (POS)
    • Blue Choice Advantage
    • Anthem BCBS of VA HealthKeepers (HMO)
    • MD IPA (HMO) & MD IPA Preferred Cardiac Global
    • CareFirst FEP Blue Focus
    • Kaiser Permanente Select
    • Amerigroup DC Alliance
    • Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
    • Aetna Medicare Advantage PFFS Plan
    • Medicare Direct
    • Choice POS II
    • CIGNA POS/Network POS
    • Optima Family Care MCO - VA Medicaid MCO
    • IH-Open POS Plus
    • Anthem BCBS of VA Key Care POS/PPO/Indemnity
    • OA Plus
    • United Healthcare Choice Plus Cardiac Global
    • United Healthcare Select HMO-EPO/NPP Cardiac Global
    • Aetna Managed Choice (POS)
    • CIGNA SureFit (HMO)
    • United Healthcare Choice Plus
    • Aetna Advantage 6350PD
    • Kaiser Permanente Select - Added Choice
    • Aetna Advantage 5750
    • CareFirst (NCA) Indemnity
    • Health Services for Children with Special Needs
    • M.D. IPA Preferred (POS)
    • Optimum Choice Preferred (POS)
    • DC/MD SHOP QHP Small Business Plans
    • BCBS Out-of-State Medicare Plans (Blue Advantage)
    • MedStar Family Choice - Maryland Health Choice
    • CareFirst Blue Preferred PPO
    • Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
    • CareFirst NASCO
    • Medicare FFS
    • United Healthcare Choice Cardiac Global
    • United Healthcare Select HMO - EPO/NPP
    • United HealthCare Community Plan - Maryland Health Choice Program
    • NYC Medicare Advantage Plus
    • HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
    • Aetna VA Exchange
    • Mamsi Life & Health (Indem./PPO)
    • Aetna Medicare Advantage HMO & PPO Plans
    • Beech Street PPO
    • Anthem BCBS Medi Blue SNP
    • Cigna Preferred Medicare (HMO)
    • Medicare Advantage - Advantra Value (PPO)
    • CareFirst Dual Prime HMO-SNP
    • Aetna Open Choice (PPO)
    • United Healthcare Navigate Cardiac Global
    • HumanaChoice Honor's plan PPO
    • HighMark
    • United Healthcare Options (PPO)
    • Aetna Premier 200PD
    • BlueChoice Open Access
    • Aetna Classic 5000
    • Choice POS
    • IH-Open Network Only Plus
    • CareFirst Community Health Plan of MD
    • Coventry Health Care of Virginia
    • First Health PPO
    • Geisinger Medicare Advantage
    • Alterwood Advanatge HMO & DSNP Plans
    • WellPoint Maryland - Maryland Health Choice
    • POS OA
    • CareFirst BlueCross BlueShield Advantage Core/Enhanced
    • Humana Gold Plus HMO
    • Advantra Platinum (PPO)
    • Kaiser Permaenete Signature - Added Choice Cardiac Global
    • Anthem BCBS of VA HealthKeepers (POS & POS OA)
    • Coventry of Delaware HMO/PPO
    • Aetna Classic 5000PD
    • Select HMO/HealthFund/Health Network
    • CareFirst Administrators
    • CareFirst MedStar PPO
    • CIGNA EPO
    • CareFirst MedStar Select PPO
    • Humana Medicare Advantage - HMO Open Access
    • CareFirst Maryland Indemnity or PPO
    • IH-Indemnity
    • Aetna Better Health of VA
    • CareFirst Group Medicare Advantage prescription drug benefit (PPO)
    • Lasso Healthcare - Medicare Medical Savings Account
    • Humana Medicare Advantage - PPO
    • Anthem BCBS Medi Blue Dual Adv
    • Great-West Healthcare POS/CIGNA
    • Kaiser Permanente Signature - Added Choice
    • Veterans Affairs Community Care Network
    • Cigna TotalCare (HMO D-SNP)
    • Kaiser Maryland Medicaid MCO
    • Aetna Basic
    • MedStar Family Choice DC Healthy Families
    • CareFirst Blue Card Program
    • Cigna True Choice Medicare (PPO)
    • Cigna True Choice Plus Medicare (PPO)
    • MedStar Family Choice DC Healthcare Alliance
    • Sentara Health
    • Aetna Worker's Compensation Network
    • Choice Fund PPO
    • Kaiser Permanente Flexible Choice 3-tier POS
    • Choice Care Network/HUMANA (PPO)
    • CIGNA PPO Plus
    • Aetna Elect Choice/ EPO (Aetna Health Fund)
    • IH-POS
    • Uniformed Services Family Health Plan
    • Kaiser Permanente Medicare Plus
    • AmeriHealth Caritas DC Healthcare Alliance
    • First Health PPO
    • Magellan Complete Care of VA - VA Medicaid MCO
    • United Healthcare Choice
    • CareFirst Federal Employee Program (Std. & Basic PPO)
    • UHC Passport
    • Coventry Health Care National Network PPO
    • IH-PPO
    • AMERIVANTAGE/Amerigroup Community Care
    • Anthem Federal Employee Program Basic
    • Mamsi Life & Health (Indem./PPO) Cardiac Global
    • Kaiser Permanente Medicare Advantage Signature and Select
    • Employee Health Plan
    • UnitedHealthcare Individual Exchange Plans
    • UnitedHealthcare and AARP Medicare Complete Plans
    • Aetna Traditional Choice (PPO)
    • Choice POS II Open Access
    • Navigate
    • HumanaChoice PPO
    • CIGNA Connect EPO
    • Maryland Physicians Care MCO
    • Core Essential (HMO)
    • IH-Open HMO
    • UnitedHealthcare Medicare Adv. Special Needs Plans
    • HealthyBlue PPO
    • TRICARE East Prime
    • Kaiser Permanente HMO Plus and DHMO Plus Member
    • OCI Direct (HMO)
    • United Medicare Private Fee-for-Service (PFFS) plans
    • Police and Fire Clinic
    • CareFirst EPO
    • Healthy Blue (HMO, POS)
    • Priority Partners - Maryland Health Choice
    • TRICARE for Life East
    • Johns Hopkins Advantage MD PPO
    • IH-HMO
    • Amerigroup DC Healthy Families
    • UHC Group Medicare Advantage Plans (HMO, POS, PPO)
    • TRICARE East Select
    • Aetna HMO
    • UnitedHealthcare Medicare Advantage DSNP District of Columbia
    • MultiPlan, Inc

Videos

Education

Board Certification: ,

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

Fellowship: Beth Israel Deaconess Medical Center (2002)

Fellowship: Beth Israel Deaconess Medical Center (2001)

Residency: Massachusetts General Hospital (1998)

Medical School: University of Pennsylvania (1995)

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
  • Sep 30, 2025

    I love Dr. Lager. He always has a smile on his face. He's confident. He always makes me feel at ease. He always listens to my questions and concerns. He doesn't rush off but takes time to discuss the health issues. Dr. Lager is nice, patient, knowledgeable, and professional. I'm so very happy that he's my cardiology doctor.

  • Sep 29, 2025

    The doctor is very knowledgeable and cares about my well-being.

  • Sep 28, 2025

    Dr listened and shared a lot of information in response to my questions, which I find particularly helpful. He could not have been nicer or more attentive.