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Our Doctors

Our highly-accomplished doctors have been repeatedly recognized in Oklahoma Magazine's Top Doctors Best of the Best, as well as Tulsa People's A-List: Head to Toe.

Mark D. Lehman, M.D.5 Stars!

Dr. Lehman is a 1992 graduate of Texas Tech University School of Medicine. He completed his dermatology residency at the University of New Mexico School of Medicine in 1996. He joined Tulsa Dermatology Clinic, Inc. in 1996. Dr. Lehman is board certified in dermatology. Dr. Lehman treats all medical and surgical dermatology diseases with a special interest in laser surgery.
Dr. Lehman is certified by the American Board of Dermatology.

I have been going to Tulsa Dermatology for many years started with Dr.Gregg. In the 90's sent my manger there. She returned from appointment, came back to work calling me in her office. She could not thank me enough as she had a skin cancer on her face. Fast forward to several years ago Dr. Lehman found a skin cancer on my face which was taken care of quickly. Today my husband, daughter and granddaughter are all Dr.Lehman's patients. He is so knowledgeable, kind and friendly. By the way his hobby taking pictures are awesome. Highly recommend him and his nurses.

-Barbara via Healthgrades

George W. Monks, M.D.5 Stars!

Dr. Monks is a 1999 graduate of the University of Oklahoma School of Medicine. He completed his dermatology residency at O. U. in 2003. He joined Tulsa Dermatology Clinic, Inc. in 2003. Dr. Monks is board certified in dermatology. Dr. Monks treats all medical and surgical dermatology diseases with a special interest in skin cancer, psoriasis and Botox.
Dr. Monks is certified by the American Board of Dermatology.

Dr. Monks was great, very kind, nurse was awesome. Took care of me. Very happy!

-Ed via Healthgrades

Kelli A. Lovelace, M.D.5 Stars!

Dr. Lovelace is a 2003 graduate of the University of Oklahoma School of Medicine. She completed her dermatology residency at O.U. in 2007. She joined Tulsa Dermatology Clinic, Inc. in 2007. Dr. Lovelace is board certified in dermatology. In addition to our Tulsa office, Dr, Lovelace is seeing patients at our Claremore location on Tuesdays. Dr. Lovelace treats all medical and surgical dermatology diseases with a special interest in Botox and daily anti-aging skin care.
Dr. Lovelace is certified by the American Board of Dermatology.

Cured the very resistant warts on my son's hands. He had at least a dozen and had them for a few years. It took about 4-5 appointments over the span of a year, but she was great, persistent and tried several methods, and finally they went away. Also, she has treated me for a couple skin problems and I also had a great experience. She is very knowledgeable and cares about her patients.

-Via Healthgrades

Christina G. Kendrick, M.D.5 Stars!

Dr. Kendrick holds an undergraduate degree from Harvard University. She completed her M.D. at the University of Oklahoma Health Sciences Center. After her preliminary year of residency in Internal Medicine at OUHSC, she completed her Dermatology residency at Louisiana State University in New Orleans. Dr. Kendrick practiced with Harvard Medical Physicians Group in Boston for 3 years and with Dermatology Consultants of Marin in San Rafael, California for 1 year before returning to Oklahoma. She has experience in medical, surgical and cosmetic dermatology.
Dr. Kendrick is certified by the American Board of Dermatology.

I have been a patient of [Dr. Kendrick] for some time now. I have gone through two skin cancers with her. She is very kind and understanding. I highly recommend her as a dermatologist. Being told you have cancer is not an easy thing to take. Thank you Dr. Kendrick... She also has a great assistant that is very nice.

-Via Healthgrades

Ashwini K. Vaidya, M.D.5 Stars!

Dr. Vaidya holds an undergraduate degree from Duke University. She completed her M.D. at the University of Oklahoma College of Medicine. After her internship in Internal Medicine at Evanston Northwestern Healthcare in Evanston, Illinois, she completed her Dermatology residency at the University of Illinois at Chicago. Dr. Vaidya practiced with Dermatology Associates of Tulsa for 9 years before joining Tulsa Dermatology Clinic, Inc., in 2013. She has experience in medical, surgical and cosmetic dermatology.
Dr. Vaidya is certified by the American Board of Dermatology.

Before Dr. Vaidya I had seen several different dermatologists. She found what I was allergic to and a medication to control it. If you have a serious problem save yourself some misery and start with her! Plus, she is super nice and compassionate. I wish I could give her 10 stars.

-Acy via Healthgrades

Emily L. Kollmann, D.O.5 Stars!

Dr. Kollmann attended medical school at Oklahoma State University and completed her residency in dermatology at Northeast Regional Medical Center in Kirksville, Missouri. Dr. Kollmann joined Tulsa Dermatology Clinic, Inc. in 2017. She is seeing patients at our Claremore location on Wednesdays.
Dr. Kollmann is certified by the American Board of Dermatology.

She is one of the best! Highly recommend.

-Via Healthgrades

Creed Stewart, M.D.5 Stars!

Dr. Stewart attended medical school and completed his dermatology residency at the University of Oklahoma College of Medicine. He is a member of the Alpha Omega Alpha medical honor society. He recently moved to Owasso from North Texas and has been practicing dermatology for over 19 years. Dr. Stewart has extensive experience in general dermatology and skin cancer treatment. In addition to our Tulsa office, Dr. Stewart is seeing patients at our Claremore location on Mondays and Fridays.
Dr. Stewart is certified by the American Board of Dermatology.

I felt [Dr. Stewart] was engaged and knowledgeable about my problem. He offered a solution and I was satisfied when I left the office. His office nurse was very nice also.

-Via Healthgrades

Courtney Cook, D.O.5 Stars!

Dr. Cook is a 2020 graduate of the Oklahoma State University College of Medicine. She completed her dermatology residency at the University of Oklahoma in 2024. She just recently joined Tulsa Dermatology Clinic, Inc. in July of 2024. Dr. Cook is board certified in dermatology. Dr. Cook treats all medical and surgical dermatology diseases with a special interest in skin cancer, Botox, and rashes (including psoriasis and eczema).
Dr. Cook is certified by the American Board of Dermatology.