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100 Leominster Rd, Sterling, MA, 01564, United States
Get directions| Weekday | Schedule | Status | 
|---|---|---|
| Mon | 9:00 a.m. to 6:00 p.m. | |
| Tue | 9:00 a.m. to 6:00 p.m. | |
| Wed | 9:00 a.m. to 6:00 p.m. | |
| Thu | 9:00 a.m. to 6:00 p.m. | |
| Fri | 9:00 a.m. to 6:00 p.m. | |
| Sat | Closed | |
| Sun | Closed | 

Dr Oconnor has always been kind, compassionate and very thorough. He explains everything in detail. I am heartbroken to hear he is leaving his office in Sterling. I don't know where I'll go. He is an excellent cardiologist!!

He's awesome ! I never feel rushed. He's kind and considerate of your feelings. Great person!

Dr O'Connor is excellent and the staff at the practice are wonderful as well. Special thanks to the lady that did my EKG, I believe her name was JJ, for being incredibly professional and kind.


Very thorough and detailed explanation of all aspects
Mark O'Connor Jr. Jr, MD has a 4.9 star rating with 19 reviews.
Mark O'Connor Jr. Jr, MD is closed now. It will open on Monday at 9:00 a.m.
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