About Saguaro Dermatology | Phoenix and Mesa Dermatologists

Our comprehensive dermatology clinics are dedicated to providing you with the highest quality of care, innovative practices, helpful resources, and state-of-the-art technology to prevent and treat a multitude of skin disorders. Led by Carsten R. Hamann, MD, PhD, Dathan Hamann, MD, FAAD, and Dr. Millard Thaler, MD, FAAD, and Mohs Surgeon, our passionate team looks forward to serving you with respect and compassion.

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Meet Our Team

Carsten R. Hamann, MD, PhD

Carsten R. Hamann, MD, PhD

Dr. Carsten R. Hamann is a board-certified dermatologist at Saguaro Dermatology and the Contact Dermatitis Institute. He…

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Dathan Hamann, MD, FAAD

Dathan Hamann, MD

Dr. Dathan Hamann is a board-certified dermatologist and the medical director of Saguaro Dermatology and the Contact Dermatitis…

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Millard Thaler, MD, Mohs Surgeon

Millard Thaler, MD, Mohs Surgeon

Dr. Millard Thaler graduated medical school in 1976 from the University of California at San Francisco as a Regents Scholar. He completed his…

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Jenna Wald, MD, Mohs Surgeon

Jenna Wald, MD, Mohs Surgeon

Dr. Jenna Wald is a board-certified dermatologist and Mohs surgeon at Saguaro Dermatology. She completed her undergraduate degree at the…

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Adriana

Adriana

Adriana has been in the dermatology field for more than a year. She worked as a medical assistant and is now taking on the new challenge of working the front desk…

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Andrea

Andrea

Andrea is an Arizona native from Sierra Vista. After graduating from the University of Arizona with a degree in Social and Behavioral Sciences, she joined the medical field…

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Alyssa

Anne

With more than 24 years in the industry, Anne is an invaluable member of our team. She greets everyone with a smile, and makes it a priority to make sure each…

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Brianna

Brianna

Brianna’s number one goal is to make her patients’ skin health journey comfortable. She has been a Medical Assistant for more than 13 years, and her knowledge and…

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Caresa

Caresa

Caresa, an Arizona native and Pima Medical Institute graduate, has been working in the dermatology field for more than 3.5 years. She is passionate about helping…

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Danielle

Danielle

Forming relationships with her patients is Danielle’s favorite part of her job, and it’s the reason she has spent more than 13 years in the medical industry…

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Harley

Harley

Although Harley recently began working in the medical field, she is already a tremendous asset to our team! She enjoys working at Saguaro Dermatology…

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Jan

Jan

Jan has been an aesthetician for more than 2 years. She fell in love with aesthetics because she enjoys working with her patients to create a customized…

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Kim

Kim

Kim brings to our practice more than 20 years of experience in the medical field. She enjoys working with our patients and is passionate about getting them…

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Madelyn

Madelyn

Madelyn is a graduate of Carrington College and has been a Medical Assistant in Dermatology for more than 3 years. She is passionate about finding solutions…

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Nicole

Nicole

Nicole has been in the medical billing and coding field for more than 20 years. She graduated from Carrington College with a Medical Billing…

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Sydney

Rachel

Rachel has worked in patient financial services since 2002. Her favorite part about the job is the feeling she gets from serving patients and working with medical…

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Sydney

Sydney

Sydney, one of our certified Medical Assistants, is passionate about patient care. Her favorite part about her job is building relationships with her patients and learning new…

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