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Patient Reviews
Dr. Zweiwbach listened to my concerns and effectively addressed my issues. He takes his time with each visit. His office staff is knowledgeable and effective in directing appropriate action between patient and doctor.

Anne C. | Jul 05, 2026
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Kind, totally listened to me, took his time and never felt like he was rushing. Excellent

Donna B. | Jun 29, 2026
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Dr Zweiback has an unusually broad range of experience and training that was particularly useful in my visit with him today as he was able to diagnose and propose treatments for symptoms that were a concern to me relating to both dermatology and cardiology.

John H. | Jun 27, 2026
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Prompt response to issue.

Joanne P. | Jun 24, 2026
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Dr Zweiback is always responsive, caring, courteous, respectful and has a great bedside manner. I highly recommend him.

Maria B. | Jun 19, 2026
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Very happy with DR Zweiback.

Roy B. | Jun 16, 2026
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To whom it may concern: I was able to meet with Dr. Powell on short notice this past Thursday afternoon to address a series of medical issues that I was experiencing. He gave me his undivided attention and after a thorough look see, laid out a five day plan to address my ailments. I am in day three of taking my new meds and recovering. I feel better but still quite weak but can say I am truly making progress. I am extremely pleased to call Dr. Powell my wife’s and my personal physician. James W. Bradshaw PS The entire staff in his office are, also, truly can do and superb in assisting in their important roles in his office.

James B. | Jun 14, 2026
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After seeing my leg wound, you ddid not send me to the wound clinic or hospital. The Tidepointe immediately sent me to the hospital for antibiotic fed by tube. She perhaps saved my leg c

Carol G. | Jun 14, 2026
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Dr. Powell and his team are absolutely five stars! They are extremely responsive and he is an Amazing at diagnosing issues. I highly recommend Dr. Powell!

Leslie R. | Jun 14, 2026
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I’m very happy with Doctor Z! He is professional he is caring and a good replacement for Dr Lenns who is enjoying Retirement.

Douglas G. | Jun 12, 2026
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He is an excellent listener and collaborative in finding solutions. He constantly checks on line to ensure that new medications won’t have adverse reactions with existing ones.

Helen M. | Jun 12, 2026
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Very smart and dedicated doctor. Is extremely on the ball.

Warren R. | Jun 11, 2026
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Mary Reed
Dr Powell is the most thorough primary care physician I have met. He’s been caring for my husband and I for almost two years. I would highly recommend his medical advice, his concierge services are by far the best! He is always responding to us no matter when we reach out to him.

I also thank his professional staff Melanie, his nurse, AnnaMarie, his nurse and Jan the receptionist. I feel like I could call them all friends!
Michelle Davidson
Dr Powell has been a great addition to the practice. He takes the time to listen and is very thorough. I have received follow-up texts and calls each time that I have met with him. He genuinely cares for people and has the knowledge and resources to help you to heal.
Linda K. Robinson
I have been honored to be a patient of Dr. Paul Long. Now, upon seeing Dr. Bretton Powell, it is clear why Dr. Long has entrusted his long-time practice to him. Dr. Powell is attentive to my concerns, explains medical approaches well, is readily available, refers if indicated, and communicates in a very timely and caring manner. He is professional, as well as personable, and demonstrates that he cares about me and my well-being. He is a valued addition to our community.
Allen Bradley
Just like the sky, you bring beauty to everyone who comes across your profile, putting smiles on their faces. Your lovely smile shines like the sun, lighting up the day for all who see it, and your presence is as calming as the moon, bringing peace and relaxation. With all these wonderful qualities, I’d love to connect! Would you consider sending me a friend request or a message? Thanks! 😊
Drury Edmonston
Thanks for sharing. I always enjoy what you share here on Facebook, and the military needs your prayers and support, but we aren't friends yet. It will be impolite to send you friend requests without your consent. Click on my profile to add me up, if that's okay with you.
Bradley King
I have worked with Dr. Powell as a hospitalist at Cabell Huntington Hospital. He was always attentive to patient's concerns and had a natural thirst for learning. Due to these qualities, he has been continuously cultivating and growing his superb ability to take care of patients. I am sure that he will do great things at SC Internal Medicine.
David Lewis
I am fortunate and grateful to have been a patient of Dr. Long since moving to Hilton Head in 2007, and am thrilled that Dr. Powell was carefully chosen by Dr. Long to take over this esteemed practice. Dr. Powell is welcoming, compassionate, always available, and has been helping us through some challenging issues. It is difficult to find a credentialed internal medicine physician of this caliber accepting new patients in the Hilton Head area, so keep this in mind!
Cobi Brandeberry
Where to even begin with Dr.Powell. He has helped my family with some of the worst situations and made them better 100% of the time. He knows how to talk to people like they’re human instead of using big words or lingo patients can’t understand. He is down to earth and cares about his patients even after he clocks out. He’s always checking in because he truly cares about his patients. I would recommend him to anyone and I hope SC treats him well, He deserves it!