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Karen “Kate” Isselbacher, M.D.

Specialty: Family Medicine, Internal Medicine


As a leading provider of concierge internal medicine services, we place personalized care and convenience at the forefront. Our team of expert physicians are committed to building strong doctor-patient relationships and ensuring that all individual healthcare needs are met with the utmost attention in the Greater Boston area. With extended availability, minimized wait times, and seamless coordination of care, we welcome you to experience the pinnacle of healthcare excellence and embark on a personalized journey towards optimal health and well-being.

List the treatments and procedures you offer:

Annual Preventive Visits: Comprehensive check-ups focusing on preventive care and early detection of health issues.
Acute Consultations: Immediate medical attention for sudden and urgent health concerns.
Complex Disease Management: Expert care and personalized treatment plans for managing chronic and complex medical conditions.
Specialist Referrals: Access to a network of top-notch specialists in various medical fields.
Auxiliary Testing: Coordination and scheduling of necessary tests for accurate diagnoses.
Convenient on-site services, including phlebotomy, electrocardiograms, ear lavage, wound care treatment, and women's preventative services such as pap smears.

Awards or Certifications

1981 A.B. (cum laude) Harvard College
1985 M.D Boston University School of Medicine
Massachusetts, Board of Registration in Medicine
American Board of Internal Medicine

What's your background, education and training?

Karen T. Isselbacher, M.D., founder & CEO of Exceptional Health, inspired by a deep lineage of physicians. With unwavering dedication, she forges profound patient connections, instilling comfort, and trust. Boasting 30+ years of primary care expertise, Dr. Isselbacher's commitment to patient well-being is unmatched. The medical care that she provides continually surpasses expectations, establishing her as a respected leader in the field, devoted to improving and maintaining each patient's health.

What do patients have to say about you?

Thank you for all of your good work! You saved my life, and I am forever grateful for your care.

You are the most caring, devoted, and brilliant doctor that I have ever had. Because of your vast knowledge, you have saved me and my husband from serious health threats.
It was Sunday morning! I tested positive for Covid, and it was Dr. Kate’s day off! With hesitation, I phoned you and with your usual kindness and concern, you provided me with excellent medical are. Words cannot describe how grateful I am.

I want to sincerely thank you for all of your hard work. You went above and beyond!
I’ve probably not said this enough but I’m so very fortunate to have had you as my doctor over these past eight years. I have never been under the care of a doctor who has the high degree of knowledge and compassion you possess.

You are a caring, intuitive and thorough doctor, astute in your reading of people and tireless in your pursuit of your patients’ body and mind health.
I will continue to sing your praises to anyone in the market for the best medical care in the area. It has been a pleasure to work with you, not to mention a huge relief to know that you were always available in the wings.

Insurances Accepted

Most commercial insurances are accepted.

Special expertise

Concierge Medicine, Nutrition, Heart Disease, Cardiac Risk Reduction