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John J. Brennan, MD
- Healthcare
- Riverhead, NY
About this business
Location details
715 Roanoke Ave Building A, Ste. 3, Riverhead, NY, 11901, United States
Get directions| Weekday | Schedule | Status |
|---|---|---|
| Mon | 9:00 a.m. to 5:00 p.m. | |
| Tue | 9:00 a.m. to 5:00 p.m. | |
| Wed | 9:00 a.m. to 5:00 p.m. | |
| Thu | 9:00 a.m. to 5:00 p.m. | |
| Fri | 9:00 a.m. to 5:00 p.m. | |
| Sat | Closed | |
| Sun | Closed |
Dr. Brennan is very nice, listens well and gave PRP injections in both knees. Insurance doesn’t cover this procedure but they do seem to help. All other Dr's me and my family have seen and been treated at OALI over the years have been great!
Dr. John Brennan is an incredible surgeon and very down to earth and caring. His staff and PA are great, too. He performed my rotator cuff and bicep tendon surgery on 3/16/26. Healing takes time but my results are fantastic!! Highly recommend!! God bless you, Dr. Brennan!!
Doctor Brennan and his team were wonderful. They took care of my daughter, whom is an elite athlete, with a potential shoulder injury. Doctor Brennan and his team did a fantastic job, their bedside manner was exceptional, and the support staff was great from start to finish. Highly Recommend.
Dr. Brennan is 100% excellent. Takes time to explain the pros and cons of treatment options. He is very understandable in his explanation. I wish more docs were as excellent as Dr. Brennan is. Thank You Marilyn Mercogliano
Frequently asked questions about John J. Brennan, MD
How is John J. Brennan, MD rated?
John J. Brennan, MD has a 4.9 star rating with 252 reviews.
When is John J. Brennan, MD open?
John J. Brennan, MD is closed now. It will open at 9:00 a.m.
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