Are you a healthcare professional?
Is this your profile?
Dr. Leslaw Gredysa, MD
General Surgery*
40+ years of experience
Dr. Leslaw Gredysa, MD is a general surgeon in Riverhead, NY and has over 40 years of experience in the medical field. Dr. Gredysa has extensive experience in Carotid Artery Disease or Carotid Endarterectomy and Peripheral Vascular Disease. He graduated from Jagiellonian University Medical College, Faculty Of Medicine in 1982. He is affiliated with medical facilities Peconic Bay Medical Center and Stony Brook University Hospital. He is accepting new patients and telehealth appointments.
4.6 Star Rating
Based on 58 reviews 4.6 Star Rating (58 reviews)
Practice
31 Main Rd Ste 2 Riverhead, NY 11901Telehealth available
Make an Appointment
Hospital Highlight
Dr. Gredysa is affiliated with Peconic Bay Medical Center Riverhead, a highly rated and top awarded hospital for general surgery.
At a Glance
- Explains Conditions Well
- Offers TelehealthThis doctor offers telehealth appointments. Call the office to schedule an appointment.
- Practices at Top Hospital
ADVERTISEMENT
Save money with free prescription discounts
Get your prescription for as low as $4 with our free coupons or discount card, usable at over 64,000 participating pharmacies.
Get your prescription for as low as $4 with our free coupons or discount card, usable at over 64,000 participating pharmacies.
Optum Perks and Healthgrades are subsidiaries of RVO Health.
Experience Check
Search for experience in a specific area
Insurance Check
Search for your insurance carrier and choose your plan type
Dr. Gredysa's Reviews
Likelihood to recommend Dr. Gredysa
4.6
58 ratings, 30 with a written review
| 5 star | 90% | 90% |
| 4 star | 2% | 2% |
| 3 star | 0% | 0% |
| 2 star | 0% | 0% |
| 1 star | 9% | 9% |
Your trust is our top concern.
We strive to keep reviews honest, trustworthy, and fair.Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.
We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.
Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.
All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.
Out for himself
What went well
- Wait times
What could be improved
- I didn't feel respected
- 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
Helpful
Feb 17, 2025
Post a ResponseAre you Dr. Gredysa?
Dr Gredysa saved my life by discovering that I had an aortic abdominal saccular aneurism. I had no overt symptoms but his sharp perception and skills identified the problem. He performed the surgery masterfully and I am here today!
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
2 others found this helpful
Helpful
joann powers – Feb 03, 2021
Post a ResponseAre you Dr. Gredysa?
Wonderful. From beginning to end, I knew I was in good hands.
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
3 others found this helpful
Helpful
Jun 11, 2020
Post a ResponseAre you Dr. Gredysa?
I was well taken care of by the entire staff. Everyone was cordial and reassuring. The surgery went extremely well. The recovery room experience was superb. I'm grateful that Dr. Gredysa and his team handled everything so well. I highly recommend Peconic Surgical group!
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
2 others found this helpful
Helpful
William Pickens III – May 28, 2020
Post a ResponseAre you Dr. Gredysa?
Complicated surgery went well and recovery was quick and mostly pain-free.
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
3 others found this helpful
Helpful
Diana Weir – Nov 08, 2019
Post a ResponseAre you Dr. Gredysa?
Terrific. Had a hernia repair, no pain ,feel great. Very professional, good bed side manner along with good hands a nice combination for a surgeon. Staff terrific also. John Kosinski
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
3 others found this helpful
Helpful
John kosinski in Matttituck , NY – Aug 17, 2019
Post a ResponseAre you Dr. Gredysa?
Dr. Gredysa is one of the best doctors I have had the pleasure to meet.
I would recommend him to my mother, I think that says it all.
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
1 other person found this helpful
Helpful
Konstantinos Karpathakis in Hampton Bays – Oct 16, 2018
Post a ResponseAre you Dr. Gredysa?
I recently had surgery for a ruptured appendix and can only give praise for the rapid, complete and professional care I received by Dr Gredysa and staff. I am truly grateful to him for my steady recovery and for the wonderful care he gave me.
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
2 others found this helpful
Helpful
dianne walsh – Jul 05, 2018
Post a ResponseAre you Dr. Gredysa?
Dr. Gredysa saved my life. I had carotid artery surgery done in January of 2018 and I
feel great. Lucky for me Dr. Gredysa came highly recommended, without his
expertise the outcome would have been very different for sure. I thank him and his
wonderful staff for being there for me every step of the way and saving my life.
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
2 others found this helpful
Helpful
John Rudder in Laurel, NY – May 19, 2018
Post a ResponseAre you Dr. Gredysa?
Dr Gredysa and his staff were accommodating, attentive and caring. They communicated clearly and, while under their care, I felt I was getting the best possible medical care.
It is, in my opinion, the way medicine should be practiced.
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
1 other person found this helpful
Helpful
Mary Brennan in New York, NY – Apr 28, 2018
Post a ResponseAre you Dr. Gredysa?
Dr. Leslaw Gredysa recenyly performed colorectal surgery on me to remove a tumor. My
experience with him was totally positive. The speed in which everything was scheduled and performed was exceptionally fast. His staff was responsive to the urgency of the situation and extremely helpful in the scheduling process.
Following the surgery, Dr. Gredysa was with me every day and careful to explain in detail what had occurred and respond to all my questions.
Overall I was extremely impressed.
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
1 other person found this helpful
Helpful
Apr 21, 2018
Post a ResponseAre you Dr. Gredysa?
Dr. Gredysa performed my emergency surgery. I was impressed by his level of expertise/competence and was greatly reassured by his self confidence. All medical information was explained to us in a manner that was "patient friendly." Dealings with his office and staff were very satisfactory. I highly recommend Dr. Gredysa.
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
1 other person found this helpful
Helpful
Anthony in East Quogue, NY – Mar 01, 2018
Post a ResponseAre you Dr. Gredysa?
Dr. Gredysa performed emergency surgery to remove my gall bladder. He was compassionate to my situation, told me exactly what was happening to me and why. The follow up with his office was through and easy. I would highly recommend Dr. Gredysa !
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
1 other person found this helpful
Helpful
James Kiley in East Hampton – Feb 12, 2018
Post a ResponseAre you Dr. Gredysa?
I had an unexpected emergent medical problem that required surgery. My shock, fear and concerns were immediately 110% relieved and alleviated when the nurse in the E.R. informed me that Dr. Gredysa "was on his way". Imagine knowing you were heading into surgery without one concern and total confidence? That is exactly what you will experience with Dr. Gredysa. My procedure was flawless and his communication was impeccable. Dr. Gredysa's skills as a surgeon are incomparable.
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
1 other person found this helpful
Helpful
Susan in Southampton, New York – Feb 07, 2018
Post a ResponseAre you Dr. Gredysa?
Dr. Gredysa was The Best Dr. to repair my situation. He was Kind, courteous, on time, informative & has a Great Bed Side Manner. I healed right to the day He said I would. Very happy with this Dr.
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
1 other person found this helpful
Helpful
Carol Elms in East Hampton, New York – Jan 20, 2018
Post a ResponseAre you Dr. Gredysa?
I've known Dr Gredysa over 20 years as a health care professional and when it came time to chose a surgeon, there was no doubt He was the man for the job!! His reputation for a great outcome is well known. He had me up and feeling better from my bad gallbladder in no time. I highly recommend him for any surgical concerns you're addressing! He's honest and won't mince words.....He will get the best outcome for you and your loved ones!!!!
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
1 other person found this helpful
Helpful
Nancy Naughton in Hampton Bays NY – Jan 19, 2018
Post a ResponseAre you Dr. Gredysa?
Dr. Gredysa and his staff are absolutely wonderful. He has operated twice on me and both procedures and recovery went well. He and his staff are extremely professional and pleasant to work with. I highly recommend Dr. Gredysa to anyone needing general or vascular surgery.
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
1 other person found this helpful
Helpful
Anthony in East Hampton – Jan 19, 2018
Post a ResponseAre you Dr. Gredysa?
Have had Dr. Gredysa address two health issues. He is very knowledgeable, patient, and understanding. His explanations are clear, concise and thorough. Dr. Greydysa is well respected in both hospitals, the support staff follows his directions to the letter, willingly. I felt totally confident with both procedures, and have had full recoveries. His office staff are always pleasant, and any phone calls to his office about pre surgical or post surgical issues have been promptly answered. Recommend
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
1 other person found this helpful
Helpful
MJ in East Hampton, NY – Jan 13, 2018
Post a ResponseAre you Dr. Gredysa?
Dr. Gredysa performed a n Endarectomy at Peconic Bay MC. He was very calm and caring, I was scared stiff! I survived and was really amazed that I felt as good as I did. Dr. Gredysa is knowledgable, caring and assuring. I am glad that he was there to help me. I would highly recommend 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
1 other person found this helpful
Helpful
Margaret Quinn in Calverton, NY – Jan 01, 2018
Post a ResponseAre you Dr. Gredysa?
Best experience - no problems - very professional
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
1 other person found this helpful
Helpful
Wayne B. in Southampton, New york – Dec 20, 2017
Dr. Gredysa's Reply –
Thank you
Post a ResponseAre you Dr. Gredysa?
Leave a review
How was your experience with Dr. Gredysa?Overall Patient Satisfaction
58responses
Likelihood of recommending Dr. Gredysa to family and friends is 4.637931 out of 5
About Me
care philosophy
The mission of Peconic Surgical Group is to provide exceptional, compassionate and personal medical care in a private, professional setting.biography
Leslaw Gredysa, MD, FACS has been a respected and trusted surgeon for more than 20 years in the East End Community. He specializes in both General and Vascular Surgeries.General Surgery
Vascular Surgery
*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
St Francis Hospital
Fellowship Hospital, 1993Nassau Co Medical Center
Residency Hospital, 1992Wycoff Heights Hospital
Residency Hospital, 1988Biernacki Medical Center
Residency Hospital, 1983Jagiellonian University Medical College, Faculty Of Medicine
Medical School, 1982
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.
Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.
Learn more about medical license public record checkEnglish
Polish
Healthgrades Top Picks on General Surgeons
Locations
Practice
Peconic Surgical Group PC31 Main Rd Ste 2 Riverhead, NY 11901
Office234 New York 27a Southampton, NY 11968
Practice
Affiliated Hospitals
- Recipient of 11
hospital awardsAmerica’s 100 Best Hospitals for Gastrointestinal Care Award™ (2025)
Superior clinical outcomes in colorectal surgeries, gallbladder removal, upper gastrointestinal surgery, and treating bowel obstruction, gastrointestinal bleeds, and pancreatitis
View all awardsGastrointestinal Care Excellence Award™ (2024)
Superior clinical outcomes in colorectal surgeries, gallbladder removal, upper gastrointestinal surgery, and treating bowel obstruction, gastrointestinal bleeds, and pancreatitis
View all patient feedbackHow patients felt about the care they received at this hospital.
86%Patients said they were given information about recovering at home2% higher than the national average
75%Patients said that doctors always listened to them and explained things well1% lower than the national average
- Recipient of 33
hospital awardsAmerica's 100 Best Hospitals Award™ (2025, 2024, 2023)
Top 1% in the nation for providing the highest clinical quality year over year
View all awardsAmerica's 250 Best Hospitals Award™ (2025, 2024, 2023)
Top 1% in the nation for providing the highest clinical quality year over year
View all patient feedbackHow patients felt about the care they received at this hospital.
86%Patients said they were given information about recovering at home2% higher than the national average
74%Patients said that doctors always listened to them and explained things well2% lower than the national average
Learn more about how Healthgrades measures Hospital Quality
Compare Providers
Providers shown based on Dr. Gredysa's location and specialty. Show more General Surgeons.