


Dr. Mark O'Connor Jr, MD
Dr. Mark O'Connor Jr, MD is a diabetes & metabolism endocrinologist in Worcester, MA and has over 10 years of experience in the medical field. Dr. O'Connor Jr has extensive experience in Osteoporosis & Screening and Diabetes & Glucose Monitoring. He graduated from UNIVERSITY OF MASSACHUSETTS / WORCESTER CAMPUS in 2013. He is affiliated with medical facilities UMass Memorial Healthalliance-Clinton Hospital, Leominster Campus and UMass Memorial Medical Center-Memorial Campus.
Practice
55 Lake Ave N Worcester, MA 01655Make an Appointment
At a Glance
- Areas of ExpertiseDr. O'Connor Jr specializes in the areas of Diabetes, Metabolism & Endocrinology & Internal Medicine. • See board certifications

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Dr. O'Connor Jr's Reviews
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About Me
biography
Dr. Mark O'Connor Jr, MD is a diabetes & metabolism endocrinologist in Worcester, MA and has over 10 years of experience in the medical field. Dr. O'Connor Jr has extensive experience in Osteoporosis & Screening and Diabetes & Glucose Monitoring....read moreEndocrinology, Diabetes & Metabolism
Internal Medicine
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University Of Massachusetts / Worcester Campus
Medical School, 2013
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Learn more about medical license public record checkFocus on Diabetes
Locations
Practice
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- Hours
- Mon: 8:00am - 5:00pm
- Tue: 8:00am - 5:00pm
- Wed: 8:00am - 5:00pm
- Thu: 8:00am - 5:00pm
- Fri: 8:00am - 5:00pm
- Sat: closed
- Sun: closed
- Directions
Practice
Affiliated Hospitals
- Recipient of 4
hospital awardsView all patient feedbackHow patients felt about the care they received at this hospital.
84%Patients said they were given information about recovering at home73%Patients said that doctors always listened to them and explained things well3% lower than the national average
- Recipient of 3
hospital awards
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