Dr. Seth McClennen, MD

Internal Medicine*MaleAge 53

Internal Medicine*

Dr. Seth McClennen, MD is an internist in Boston, MA and has over 25 years of experience in the medical field. He graduated from Dartmouth College in 1997. He specializes in Internal Medicine and Cardiology.

Dr. Seth McClennen, MD

Brigham and Women's Hospital, Heart and Vascular Center

70 Francis St Boston, MA 02115

Accepting new patients

Dr. McClennen is a Healthgrades Choice provider in Cardiology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Areas of Expertise
    Dr. McClennen specializes in the areas of Cardiovascular Disease, Clinical Cardiac Electrophysiology & Internal Medicine. See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Practices at Top Hospital
    America's 250 Best Hospitals Award™ See hospitals
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. See hospitals

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Dr. McClennen's Reviews

Likelihood to recommend Dr. McClennen

4.8
17 ratings, 7 with a written review
5 star
94%
94%
4 star
0%
0%
3 star
0%
0%
2 star
0%
0%
1 star
6%
6%

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Amazing cardiologist
Recent visit with this physician. Extremely knowledgeable, friendly, personable, and reassuring. Spend a great deal of time explaining conditions and detailing next steps to be taken. Again, very reassuring. Truly one of the best healthcare providers I’ve ever seen.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jul 31, 2022
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Performed my coronary ablation with no problems or complications
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Mar 06, 2021
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Top notch doctor, came highly recommended, his credentials speak for themselves… He has a great personality, and will take the time to answer your questions… I like this ma top notch doctor, came highly recommended, his credentials speak for them self… He has a great personality, and will take the time to answer your questions… Super nice person, and we are lucky to have him.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
4 others found this helpful
Helpful
Christopher Remis in South shore, MA – May 22, 2018
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Absolutely the best. Friendly, mannerly, engaging, knowledgeable, sincere. Best doctor I have ever had.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
5 others found this helpful
Helpful
Joseph Hackett in Marshfield, MA – Jan 11, 2018
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I'm not sure I could think of a desirable trait from a patient stand point that he does not possess. I feel so confident and comfortable with Dr McClennen! Thank you for your wonderful care!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
6 others found this helpful
Helpful
Mary Carle in Scituate, MA – Mar 27, 2017
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I cannot say enough good about Dr. McClennen. He performed an ablation on my husband in 2011 and after four years the few times he experienced an afib episode all I had to do was email him and I got a rapid response to clear it up. I recently saw him for an abnormal EKG he scheduled testing immediately and I received an email within days with my results. We has our complete confidence and trust!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
5 others found this helpful
Helpful
Marnik in Sandwich, MA – Feb 21, 2017
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Dr. McClennen handled my open heart surgery for a valve repair very well. But then four years later I had a heart attack. They put in a stent. He kept telling me things look good. He should have said You should exercise twice a week. It's important. After my heart attack, I had complications and was supposed to go to cardiac rehab, but I took too long and the insurance said no. He said just let it go. My regular doctor's office pursued the insurance company until they gave me an extension.
What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
7 others found this helpful
Helpful
south shore teacher in Duxbury, MA – Jun 16, 2016
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About Me

biography

Dr. Seth McClennen, MD is an internist in Boston, MA and has over 25 years of experience in the medical field. He graduated from Dartmouth College in 1997. He specializes in Internal Medicine and Cardiology.
  • Internal Medicine

  • Cardiology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Dartmouth College

    Medical School, 1997
American Board of Medical Specialties®
American Board of Internal Medicine®
Cardiovascular Disease
Clinical Cardiac Electrophysiology
Internal Medicine
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Dr. McClennen is a Healthgrades Choice provider in Cardiology

    Read our methodology

    Locations

    Brigham and Women's Hospital, Heart and Vascular Center

    1

    Affiliated Hospitals

    • Brigham and Women's Hospital

      75 Francis St
      Boston, MA 02115
      Recipient of 31
      hospital awards

      America's 250 Best Hospitals Award™ (2025)

      Top 5% in the nation for consistently delivering clinical quality

      Outstanding Patient Experience Award™ (2024, 2023, 2022)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards

      How patients felt about the care they received at this hospital.

      91%
      Patients said they were given information about recovering at home

      7% higher than the national average

      84%
      Patients said that nurses always listened to them and explained things well

      9% higher than the national average

      View all patient feedback
    • Beth Israel Deaconess Hospital Plymouth

      275 Sandwich St
      Plymouth, MA 02360

      How patients felt about the care they received at this hospital.

      90%
      Patients said they were given information about recovering at home

      6% higher than the national average

      80%
      Patients said that nurses always listened to them and explained things well

      5% higher than the national average

      View all patient feedback
    • South Shore Hospital

      55 Fogg Rd
      South Weymouth, MA 02190
      Recipient of 4
      hospital awards

      How patients felt about the care they received at this hospital.

      89%
      Patients said they were given information about recovering at home

      5% higher than the national average

      77%
      Patients said that nurses always listened to them and explained things well

      2% higher than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality