Mark O'Connor Jr. Jr, MD
5.0(7 reviews)
About ProfilePoints™

Mark O'Connor Jr. Jr, MD
Internal Medicine Physician - Cardiovascular Disease

Biography

Dr. O’Connor aspires to provide the highest quality of cardiovascular care to his patients by combining the science of evidence-based medicine and cutting edge technology with the art of listeni… Read more ›

View Phone #Call NowWebsite

Office Hours

  • Mon:8:00am - 4:30pm
  • Tue:8:00am - 4:30pm
  • Wed:8:00am - 4:30pm
  • Thu:8:00am - 4:30pm
  • Fri:8:00am - 4:30pm

Featured Review See More Reviews

Dr. O'Connor and his helper were both very nice!…

Anonymous

Summary

Provider Training

UniversityDegreeFocusGraduated
University of Massachusetts Medical SchoolMedical Degree2012

InstitutionFocusYear
Residency - Brown University/Rhode Island Hospital-Lifespan Program Not Specified

Photos

Provider Profile 0Provider Profile 1

Specialties

Languages Spoken
English
Medical Specialties
  • Internal Medicine Physician - Sub-Specialty: Cardiovascular Disease

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5.0
Number of Reviews: 7
Most Recent Review: 08/29/2025
Write a Review

Office & Staff Evaluation 5.0

Ease of Getting an Appointment 5.0
Courtesy of Practice Staff Not rated
Office Appearance & Atmosphere Not rated
Handling of Billing Matters Not rated
Average Wait Time Not Rated

Provider Evaluation 5.0

Listening Skills 5.0
Clear Explanations 5.0
Trust in Decision Making 5.0
Open full review
Verified Patient

“Dr. O'Connor and his helper were...”

Dr. O'Connor and his helper were both very nice!

Anonymous 08/29/2025
Open full review
Verified Patient

“I have followed Dr Mark O'Conner...”

I have followed Dr Mark O'Conner from the UMass Leominster Hospital! Thanks!

Anonymous 07/31/2025
Open full review
Verified Patient

“Dr O'Connor is very personal....”

Dr O'Connor is very personal.

Anonymous 06/22/2025
Open full review
Verified Patient

“I always have a wonderful experi...”

I always have a wonderful experience with Dr Mark Oconnor. He is very intelligent and also very easy to talk with. He explains my health problems very clear to me. I really enjoy my office visits with him.

Anonymous 06/12/2025
Open full review
Verified Patient

“Dr Mark O'Conner is the finest d...”

Dr Mark O'Conner is the finest doctor that I have ever had in my life of 67 years. Very professional and a very good listener. He's the BEST!!

Anonymous 08/10/2025
Open full review
Verified Patient

“Dr. O'Connor is the best!...”

Dr. O'Connor is the best!

Anonymous 06/30/2025
Open full review
Verified Patient

“Dr. O'Connor was very thorough a...”

Dr. O'Connor was very thorough and took time to explain the options open to me.

Anonymous 06/16/2025

Locations

Affiliated Practices

Practice Colleagues

Peter Wilson, MD   -   Internal Medicine Physician
0 reviews
Open Profile
Marsha Olson, ACNP   -   Nurse Practitioner
0 reviews
Open Profile

Procedures & Services

Procedures & Treatments Offered

    Commonly Prescribed Medications

    Mark O'Connor Jr. Jr, MD has not yet listed the medications that he commonly prescribes.

    Accepted Insurance

    Accepted Insurance

    Mark O'Connor Jr. Jr, MD has not yet specified the insurance plans he accepts.