What patients are saying
Overall rating
4.91
Average wait time
4.85
Bedside manner
4.97
“This was my first visit to Dr. Mckenzie. The staff was welcoming and all the prefilled forms were done ahead of time so no need to go through it again in person. The doctor listened to me and took notes. He even gave me a copy so I would have it. Imagine that! Actual paper with notes on it so I could reference it. Great bedside manner. Highly recommend.”
Filippo G.March 20, 2026
“Dr Costner came highly recommended. He listened to my concerns and addressed each one individually, providing clear and easy to follow instructions. He even wrote it down for me so there would be no confusion. Very professional and approachable. Looks like I found my Derm. Will return. ”
Paulina K.March 18, 2026
About Dr. Costner Mckenzie
Dr. Costner McKenzie is a board-certified dermatologist at the Skin Institute of New York (SINY®). He treats adult and pediatric patients and has expertise in both medical and cosmetic dermatology.
A graduate of Stanford University, he earned his Bachelor's degree in Human Biology, laying a solid foundation for his medical career. His academic pursuits continued at Northwestern University Feinberg School of Medicine, where he earned his medical degree. At Northwestern, Dr. McKenzie's commitment to academic and clinical excellence was recognized through his induction into the prestigious Alpha Omega Alpha Honor Medical Society, an honor that recognizes academic achievements and dedication to the medical profession.
Following medical school, Dr. McKenzie pursued his dermatology residency at New York University. There, he honed his clinical and procedural skills under the mentorship of leading experts in the field. Demonstrating leadership and clinical acumen, he served as Chief Resident in his final year.
Dr. McKenzie is a well-published author, with several publications in reputable dermatology journals, which he has presented at national and international meetings. His research and clinical interests span a broad spectrum, including topics such as eczema, acne, hair loss, and health disparities. His work aims to advance the understanding and treatment of skin conditions and improve patient outcomes.
Beyond his clinical and research contributions, Dr. McKenzie is known for his compassionate patient care and his ability to combine scientific rigor with a personalized approach to treatment. He is an active member of the American Academy of Dermatology and is deeply committed to medical education and the training of future dermatologists.
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In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
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Medicare
UnitedHealthcare
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Office locations
SINY Dermatology - Delray Beach (1 of 11)
15071 S FL-7, Ste 300, Delray Beach, FL 33446
SINY Dermatology - Queens - Forest Hills (7 of 11)
109-33 71st Rd, Ste 1F, Forest Hills, NY 11375
1 of 11
Education and background
Practice names
Education and training
- Medical School - Northwestern University, Doctor of Medicine
- New York University, Residency in Dermatology
Professional memberships
- American Academy of Dermatology
Languages spoken
- English
Provider's gender
Male
NPI number
1003361171
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.91
Wait time
4.85
Bedside manner
4.97
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
870 reviews
Most relevant
Great doctor with expertise and excellent skills, ie, gentle procedures. As for the office, Rooms could have cleaner floors.
Less than 1 month agoInitials hidden
The admin staff are amazing !Knowledgeable and know what they’re doing. Very efficient office. Doctor was respectful!
February 16, 2026Grace T.Verified patient
Dr. Mckenzie is one of kindest most patient doctors i've ever had the pleasure of seeing. His office is slaps
February 11, 2026Joe B.Verified patient
The doctor didn’t rush the appointment, was friendly and explained everything. The staff were helpful and personable.
November 30, 2025Adam C.Verified patient
The front desk staff was warm and welcoming. The doctor was super informative and helpful. I’ll definitely be returning.
November 4, 2025Chanelle S.Verified patient
Dr. Costner Mckenzie is very practical, efficient, professional, and quick. Excellent service! Highly recommended!
Less than 6 months agoInitials hidden
Efficient and helpful visit! Dr. McKenzie is very friendly and clearly cares about his patients.
Less than 1 month agoInitials hidden
Dr.Costner was amazing and so was MJ, the assistant. Super pleasant experience, I’d recommend them 10/10 times
August 29, 2025Prashath C.Verified patient
Dr. McKenzie is warm, empathetic, kind, a great listener and tailors treatment to the individuals comfort level.
Less than 1 year agoZephan R.Verified patient
Dr McKenzie was kind, and attentive, he was referred by my daughter and she was right! Listens, asks, and explains.
May 20, 2025Initials hidden
Very positive. New prescriptions for my condition and doctor's views on my past procedures by other doctors/PAs.
May 22, 2025David P.Verified patient
Very helpful and professional. Great bedside manner, clearly deeply knowledgeable.
March 8, 2026Spencer M.Verified patient
Always a pleasant experience, quick visits, a kind and attentive doctor, and excellent care every time.
September 2, 2025Ann G.Verified patient
Excellent bedside manner. Dr. McKenzie listened to all my concerns and made a plan for treatment
November 10, 2025Danielle T.Verified patient
Very kind Dr who was direct and confident in his diagnosis. I now have a prescription and look forward to being cured.
February 10, 2025Danielle A.Verified patient
Amazing doctor, took time to listen to my concerns qnd prescribe proper treatment . Very knowledgeable
September 11, 2025Sofia T.Verified patient
Maybe the most efficient appt I've done! Dr and staff all really friendly - was in and out
December 22, 2025Initials hidden
Extremely friendly and professional. Thorough examination after almost no wait. Definitely would recommend Dr. McKenzie!
December 30, 2024Tyler S.Verified patient
Great doctor, way more thorough than the other dermatologist I saw. Can highly recommend for sure.
September 30, 2025Zachary R.Verified patient
Another great visit with Dr. McKenzie. I feel very confident in the care received
February 24, 2026Peter W.Verified patient
I was impressed with the doctor, the administrative staff, and the office. Glad I made the appointment!
July 29, 2025Initials hidden
Great professionalism at this office. Friendly front desk staff and great location.
January 7, 2026Kacy J.Verified patient
My experience was very good with the staff and the doctor. I m very satisfied of the service. Its outstanding!
February 18, 2025Initials hidden
Dr. Costner was very friendly and helpful. I felt very comfortable and had a great experience. Would recommend!
March 4, 2025Olivia A.Verified patient
Excellent doctor, very good listener, patient, and thoroughly engaged with his patients
November 5, 2025Wendy C.Verified patient
I feel very well cared for by a Doctor who listens to concerns and ably addresses those.
October 29, 2025Mark C.Verified patient
receptionist was not very friendly but the doctor and assistants were all nice and friendly
September 25, 2025michiko Y.Verified patient
Dr.McKenzie was friendly and informative and answered all my questions, efficient and easy appointment thanks!
December 23, 2024Melissa C.Verified patient
Informative physician. Very approachable & efficient. Excellent bedside manner. Highly recommend.
June 23, 2025Initials hidden
Great visit and treatment, Dr. Costner Mc Kenzie was professional and caring. Thanks you!
Juana
June 24, 2025Juana G.Verified patient
That doctor wad sharp as a tack and quick on his feet. A smart guy who helped immensely.
August 14, 2025Constance B S.Verified patient
Office staff helpful and friendly. The doctor listened carefully and provided clear information.
May 16, 2025JENINNE W.Verified patient
The doctor was professional and very thorough. He explained everything and gave recommendations.
April 22, 2025Rosalind S.Verified patient
Dr McKenzie was amazing. Very punctual, detailed with his explanations and made me feel at ease.
April 21, 2025Brighid D.Verified patient
I really like his bedside manner. He actually listens to your concerns. I highly recommend him!
May 5, 2025Bassam A.Verified patient
Amazing experience. Seen right away—didn’t even get to sit down in the waiting room.
August 21, 2025Christopher M.Verified patient
Very good doctor. Attentive and takes his time to look at your concerns. Highly recommend
April 24, 2025Elena V.Verified patient
High recommend Dr. McKenzie! Very efficient visit and I am very happy with the care I received.
January 11, 2025Abigail D.Verified patient
Dr. McKenzie was spectacular! He has a lifelong patient in me :) Couldn’t recommend him more!
More than 1 year agoNonyerem A.Verified patient
Outstanding service and easy in and out! Highly reccommend as he was knowledgeable.
April 1, 2025Dosta D.Verified patient
I was seen by the doctor at the time of my appointment. Very courteous and professional
January 27, 2025Anne C.Verified patient
Office was very nice and Dr Zambrano was very kind and knowledgeable
August 27, 2025Initials hidden
Efficient and quick. Listens to your concerns. Would visit again
Less than 6 months agoInitials hidden
Dr. McKenzie was efficient and kind. He listened and was very insightful.
June 26, 2025Initials hidden
I had a great experience with Dr. Mckenzie! Very kind and attentive
September 4, 2025Teresa B.Verified patient
Thanks for making my visit seamless and creating a new skincare routine for me!
April 2, 2025Vincent L.Verified patient
He's one in a million. Nice guy who know his stuff!
January 6, 2026Bob Mcandrew .Verified patient
The attention was excellent! and the doctor was very professional. Great experience
More than 1 year agoLucia V.Verified patient
Dr. Mckenzie was knowledgeable, friendly, and efficient. Great experience!
April 28, 2025Initials hidden
Professionals, understandable, clean and nice space.
December 4, 2025Julia A.Verified patient
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How soon can I make an appointment with Dr. Costner Mckenzie?
Generally, Dr. Costner Mckenzie has appointments available on Zocdoc within 1 week. You can see Dr. Mckenzie's earliest availability on Zocdoc and make an appointment online.
Is Dr. Costner Mckenzie accepting new patients?
Dr. Costner Mckenzie generally accepts new patients on Zocdoc. You can see Dr. Mckenzie's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Costner Mckenzie accept my insurance?
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Can I make an appointment with Dr. Costner Mckenzie online?
Yes, you can make an appointment online with Dr. Mckenzie using Zocdoc. It’s simple, secure, and free.
What practice does Dr. Costner Mckenzie work with?
Where is Dr. Costner Mckenzie's office located?
Dr. Costner Mckenzie has 11 office locations, including in New York, Southold, Brooklyn, Massapequa, Forest Hills, and Delray Beach, view full addresses on Dr. Mckenzie's profile.
What are common reasons for patients to see Dr. Costner Mckenzie?
Dr. Costner Mckenzie frequently sees patients for Acne, Allergy Consultation, Annual Skin Screening, Dermatology Consultation, and Sexually Transmitted Infection (STI). You can see other visit reasons for Dr. Costner Mckenzie on their profile.
What languages does Dr. Costner Mckenzie speak?
Dr. Costner Mckenzie speaks English.
How do patients rate Dr. Costner Mckenzie in reviews?
870 patients have reviewed Dr. Costner Mckenzie. The overall rating for this doctor is 4.91/5. They have a 4.97/5 rating for bedside manner and a 4.85/5 rating for wait time. You can read individual reviews and ratings on their profile.