Tatiana Rogers, DVM, MBA
An LA native and lifelong animal lover, Dr. Tatiana Rogers began her journey in animal care in 2010 as a wildlife rehabilitator before earning her veterinary degree from Colorado State University. She has experience in small animal and exotic medicine and has developed a special passion for dermatology, helping pets find relief from allergies, chronic skin conditions, and ear disease.
Growing up as the daughter of a police K9 trainer, Dr. Rogers was surrounded by working dogs including Mastiffs and German Shepherds, many of whom struggled with ear infections and sensitive skin. Those early experiences sparked her love for healing the body's largest organ and helping pets feel comfortable in their skin again.
Today she manages allergies and skin conditions in dogs and cats every day and enjoys building preventive care plans that keep pets healthy and itch free.
Ehsan Azimi, MD
Dr. Ehsan Azimi is a Harvard-trained physician-scientist specializing in medical and surgical dermatology, laser surgery and aesthetics.
He completed dermatology residency at the Harvard Combined Dermatology Program and a dermatology research fellowship at the Cutaneous Biology Research Center at Massachusetts General Hospital, where he made groundbreaking discoveries regarding mast cells and Mrgpr receptors. His research has significantly advanced the understanding of skin inflammation and sensory mechanisms.
Notable achievements include:
- Discovery of the first antagonists of MRGPRX2, a receptor implicated in skin sensation, drug reactions, inflammation, and mast cell degranulation
- First to discover the dual action of neurokinin-1 receptor inhibitors on Mrgprs
- Describe the mechanism of Red Man Syndrome, a common drug-induced reaction
- Inventor on two U.S. patents for targeting Mrgpr receptors
- Authored over 40 book chapters and publications in prestigious journals such as the Journal of Allergy and Clinical Immunology, Journal of Clinical Investigation, Nature Communications, and Nature Reviews.
- Dr. Azimi also served as a peer reviewer for several journals including the Journal of Investigative Dermatology, Cell, ITCH, and Lasers in Surgery and Medicine, among many others. He has received multiple research awards and support from the National Eczema Association, Society for Investigative Dermatology, and other leading organizations.
His training included prestigious institutions such as:
- Massachusetts General Hospital
- Brigham and Women’s Hospital
- Dana-Farber Cancer Institute
- Boston Children’s Hospital
- Beth Israel Deaconess Medical Center
- Lahey Hospital and Medical Center
Zac Johnson, MPAS, PA-C
Zac Johnson is a board-certified physician assistant born and raised in Bloomington, IL. He graduated from Illinois State University with a degree in Biological Sciences, where he excelled academically and athletically as a team captain and all-conference Division I third baseman. Before pursuing his clinical career, Zac conducted research at Northwestern University's Robert H. Lurie Comprehensive Cancer Center, focusing on myeloid cell differentiation — work that was published in the Leukemia Research Journal.
He earned his Master of Physician Assistant Studies from the University of Kentucky with a 4.0 GPA, and has since built nearly a decade of specialized experience in medical and surgical dermatology. His clinical focus centers on chronic cutaneous disorders, with deep expertise in atopic dermatitis — having treated over 5,000 cases throughout his career.
Zac is a member of the American Academy of Physician Assistants (AAPA) and the Society of Dermatology Physician Assistants (SDPA).