Dr. Laurence Sloss, MD

Dr. Laurence Sloss, MD

Cardiology  |  
Male  |  
Age 77
Insurances AcceptedSave
Dr. Laurence Sloss, MD is a cardiology doctor who practices in Boston, MA. He is 77 years old and has been practicing for 52 years. Read his story

300 Longwood Ave

Boston, MA 02115

Contact Information

(617) 355-4278

Insurance Accepted

  • Accepts most major Health Plans. Please contact our office for details.

*Please verify this information when scheduling an appointment.

Learn about Dr. Sloss

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Top Care Areas


See how frequently Dr. Sloss performs your care needs compared to other doctors.

Septal Defect
more than 68% of peers
Coronary Artery Disease (CAD)
more than 64% of peers
Heart Disease
more than 63% of peers

Dr. Sloss's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

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Dr. Sloss' bio

This content was provided by Dr. Sloss "I was an undergraduate at the California Institute of Technology (Caltech), graduating in 1961 with a bachelor of science in biology. My original major was chemistry, switching to biology in my sophomore year. I attended Stanford Medical School in their new five year program, but rather than using the extra time to develop a laboratory science concentration I spent my elective time largely in cardiology and cardiovascular surgery, continuing those interests and concentrations in my elective time while an intern and resident at MGH. While at Stanford and continuing at MGH I became particularly interested in adults with congenital heart disease, and to round out my education in congenital cardiology I took an additional year of fellowship in pediatric cardiology at Boston Children's Hospital. I then joined the faculty and began to develop a clinical program emphasizing my interest in adults with congenital heart disease, a project that subsequently developed into the BACH adult congenital heart disease program. I also spent considerable time in the cardiac pathology service and during the sabbatical of Prof.Van Praagh ran the congenital cardiac pathology program and conferences. While continuing my clinic at Children's I spent four years as director of the Heart Station cardiac noninvasive laboratory at Peter Bent Brigham Hospital, stepping back in 1978 to associate director while opening my private practice in cardiovascular disease with emphasis on noninvasive diagnosis and adults with congenital heart disease, continuing that practice to the present day as well as remaining an active part-time member of the Children's Hospital cardiology department."


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Care Philosophy

This content was provided by Dr. Sloss "I was interested in science from an early age, with my brother accompanying our father on geology field trips with his students from Northwestern University. 

I had an extensive home chemistry laboratory and an active interest in electronics and went to Caltech with the expectation of being a "hard" scientist. I became progressively more interested in biology and was nearly seduced by a summer marine biology course into a life as a marine biologist, but felt somehow that moving away from pure science and toward the human, personal and particular nature of life as I experienced it would be more fulfilling to all of the components of that life, and more challenging to me as one who was confident in technical knowledge and skills but saw room to grow as a person and serve as a citizen in real time, and that medicine was the place of confluence of what I had been and was and what I might and would be."


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  • Cardiology
  • Adult Congenital Heart Disease Cardiology

Board Certifications

  • Cardiovascular Disease
    Accredited by: American Board of Internal Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

Conditions Treated

  • Aneurysm
  • Aneurysm of Heart
  • Angina and Acute Coronary Syndrome
  • Aortic Aneurysm
  • Aortic Dissection
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Arrhythmias
  • Atrial Fibrillation
  • Atrial Flutter
  • Autonomic Disorders
  • Autonomic Dysreflexia
  • Cardiomegaly
  • Cardiomyopathy
  • Carotid Artery Disease
  • Chest Pain
  • Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
  • Coarctation of the Aorta
  • Congenital Aortic Valve Disorders
  • Congenital Heart Defects
  • Congenital Heart Disease
  • Congenitally Corrected Transposition of the Great Arteries (CCTGA)
  • Congestive Heart Failure
  • Coronary Artery Disease (CAD)
  • Ebstein's Anomaly
  • Endocarditis
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Disease
  • Heart Palpitations
  • Hyperlipidemia
  • Hypertension
  • Hypertensive Chronic Kidney Disease
  • Hypertensive Heart Disease
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypotension
  • Limb Swelling Caused by Fluid Overload
  • Marfan Syndrome
  • Mitral Valve Disease
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Patent Ductus Arteriosus
  • Pericardial Disease
  • Primary Pulmonary Hypertension
  • Pulmonary Disease
  • Pulmonary Hypertension
  • Pulmonary Valve Disease
  • Septal Defect
  • Syncope
  • Tetralogy of Fallot
  • Thrombosis
  • Tricuspid Valve Disease
  • Vascular Disease


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  • Automatic Implantable Cardioverter Defibrillator (ICD) Implantation
  • Cardiac Catheterization (incl. Coronary Angiography)
  • Cardiac Electrophysiology
  • Cardiac Imaging
  • Cardiac MRI (Magnetic Resonance Imaging) of Heart or Chest
  • Cardiac Myocardial Perfusion Imaging
  • Cardiovascular Stress Test
  • Cardioversion, Elective
  • Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair
  • Chest CT (incl. Heart and Lungs)
  • Coronary Angioplasty, Atherectomy and Stent
  • Pacemaker Insertion or Replacement
  • Peripheral Artery Catheterization
  • Thoracentesis
  • Tilt Testing or Cardiac Event Monitors

Background Check

0 Malpractice Claims

No malpractice history found for Massachusetts.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • California Institute Of Technology
    Undergraduate School | Graduated 1961
  • Stanford University
    Medical School | Graduated 1966
  • Massachusetts General Hospital
    Internship Hospital | Completed 1967
  • Massachusetts General Hospital
    Residency Hospital | Completed 1968
  • Children's Hospital Boston
    Fellowship Hospital | Completed 1973
  • Massachusetts General Hospital
    Fellowship Hospital | Completed 1972

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Sloss has no media or publications listed.

Languages Spoken

  • English
  • Spanish

Memberships & Professional Affiliations

Dr. Sloss does not have any memberships or affiliations listed. If you are Dr. Sloss and would like to add memberships or affiliations, please update your profile.

Dr. Sloss' Reviews

Likelihood of recommending Dr. Sloss to family and friends
based on 13 total reviews (3 with comments)

Likelihood to Recommend (13)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Sloss' Performance

Explains condition(s) well
Answers Questions
Time well spent

Office & Staff Performance

Office environment
Staff friendliness
Average wait time
10 to 15 minutes

Patient Comments (3)

in Newburyport |
Dr. Sloss has been my cardiac Dr. For over 20 years! He is professional, yet personable and never forgets that your a person with pain, fears and feelings. Having open heart surgery is a major life changing experience and with him by my side, I felt safe, assured and in competent hands. DW
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in Massachusetts |
Besides being a smart-as-a-whip world-class cardiologist and a top-notch raconteur, Dr. Sloss is also a genuinely good guy whom I always look forward to seeing.
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in Auburn, MA |
Dr Sloss is a very caring and wonderful doctor. When I had my surgery, one of the nurses told me that if she ever had heart problems, she would go to Dr. Sloss. I thought that was the highest compliment to be paid to him. I have been going to Dr. Sloss for about 10 years and I won't change.
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Visit Dr. Sloss

Now Accepting New Patients
Dr. Sloss accepts 1 insurance carrier
  • Accepts most major Health Plans. Please contact our office for details.

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Sloss has admitting privileges

Melrose - Wakefield Hospital
585 Lebanon St
Melrose, MA 02176
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Brigham and Women's Faulkner Hospital
1153 Centre St
Boston, MA 02130
View Hospital Profile
Newton - Wellesley Hospital
2014 Washington St
Newton, MA 02462
View Hospital Profile
Brigham and Women's Hospital
75 Francis St
Boston, MA 02115
View Hospital Profile
Beth Israel Deaconess Medical Center
330 Brookline Ave
Boston, MA 02215
View Hospital Profile
Emerson Hospital
133 Old Road To 9 Acre Cor
Concord, MA 01742
View Hospital Profile
Boston Children's Hospital
300 Longwood Ave
Boston, MA 02115
View Hospital Profile


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