Meet The Team

At Comprehensive Dermatology Center of Pasadena, we take our skin care partnership with you seriously. Our front office, our medical assistants, and our billing staff are here for you, going the extra mile to provide an excellent patient service experience. Healthy skin is beautiful skin, and it’s our pleasure to work with you toward that healthy, beautiful goal!

Alyviah Durham, MSPA, PA-C  

Alyviah Durham, MSPA, PA-C is a certified Physician Assistant specializing in Dermatology and Urgent Care Medicine. Alyviah obtained her Bachelor Degree of Science in Health Sciences from Bradley University in Peoria, IL. While later obtaining her Masters Degree in Physician Assistant Studies at the University of La Verne, Alyviah received her certification from the National Commission on Certification of Physician Assistants, with an active California State License. Alyviah is also a Diplomate Fellow and member of the Society of Dermatology Physician Assistants and a member of the Southern California Dermatology Physician Assistant Organization.

Alyviah’s passion lies in patient education, as she firmly believes that knowledge empowers individuals to take control of their dermatological health. Alyviah has a particular focus in medical dermatology. Her education and training qualify her to perform full body skin exams, diagnose and treat dermatologic conditions, and perform medical procedures in the office.

Alyviah’s ultimate goal is to help her patients achieve their personal skin desires, whether it’s achieving healthy skin or addressing specific concerns!

Alexa N. Herzig, P.A. 

Alexa N. Herzig, MHS, PA-C is a certified physician assistant specializing in medical, surgical and cosmetic dermatology. She received her Bachelor of Science degree in Neuroscience from The University of California, Santa Cruz and her Masters Of Health Services in Physician Assistant Studies from The University of California, Davis.  Alexa is certified by the National Commission on Certification of Physician Assistants, has an active Physician Assistant license in the state of California and is a Diplomate Fellow of The Society of Dermatology Physician Assistants. She currently serves as a board director for the California Dermatology Physician Assistant Society. 

Alexa focuses on providing evidence-based, patient centered medical and aesthetic care. As a dermatology PA, she diagnoses and treats dermatologic disorders, performs full body skin exams and in-office procedures, such as biopsies, excisions, cryosurgery and many others. She is also passionate about aesthetics and enjoys working with patients to achieve their aesthetic goals while always maintaining natural-looking results with dermal fillers, neurotoxins, lasers and skin care products. She strives to help her patients feel more comfortable and confident in their own skin. 

Gina N.Obsenares, P.A.

Gina N.Obsenares, PA-C is a certified Physician Assistant with 3 years of Family Practice and 17 years of medical/cosmetic Dermatology experience. She earned her Bachelor of Science Degree in Biological Sciences from the University of California, Irvine and her Certificate in Physician Assistant Studies from Charles Drew University of Medicine and Science. She is licensed by the Physician Assistant Board of the State of California and is an active member of the Society of Dermatology Physician Assistants and the California Association of Physician Assistants. She is also a founding member of the California Dermatology Physician Assistant Society.

As a Physician Assistant who has received specialized training in dermatology, Gina is licensed and qualified to perform comprehensive dermatological exams as well as diagnose, treat and prescribe appropriate medical therapy for your dermatology needs. She is skilled in performing procedures including biopsies, excisions and cryotherapy and she enjoys treating a variety of conditions particularly acne, eczema and psoriasis.

She has a passion for aesthetics and will develop a treatment plan to help her patients achieve the natural results they desire. She has extensive experience in performing laser and injectable treatments (Botox® and dermal fillers).

As a resident of Pasadena, she is committed to her community and to providing the best possible care for all her patients. In her free time, she enjoys spending time outdoors with her family, hiking and traveling.

Sandra Callin, Aesthetician

Sandra Callin is a licensed Medical Esthetician who holds international licensing from CIDESCO as well as California state board licensing.

A native of Sweden, a nation centered on holistic health, Sandra applied her natural inclination to health and beauty at a very young age. She graduated more than 15 years ago from the International Beauty School in Stockholm.

Over her long tenure in skin care and aesthetics, Sandra has crafted a unique and highly desired holistic approach that not only covers the skin, but also the mind, body, and spirit.

“The skin is a reflection of the inside of one’s body,” Sandra says. “To find wellness in the skin, one must find a balance of the body inside and out.”

Fueled by her lifelong passion for health and beauty, Sandra takes a unique approach to each patient, with the sole goal of making clients look and feel their best.

Sandra Callin is in our office Tuesday – Saturday.

Ruby Bustos, Aesthetician and Cosmetic Consultant

Ruby Bustos is a certified Aesthetician experienced in our full range of aesthetic and spa treatments, including DiamondGlow, HydraFacials, Micro-needling, and Dermaplaning. See Ruby for facials and chemical peels designed to meet your skin’s needs, from acne care to getting Red Carpet ready for that special occasion.

Ruby also serves as a cosmetic consultant. Her in-depth knowledge of the many cosmetic treatments and skin care products offered in our office allows her to help patients choose the skin care that’s just right for them.

Ruby Bustos is in our office Monday – Friday. 


Our treatment suites are equipped with the latest dermatological lasers, for advanced, safe, comfortable treatment of your skin's medical and cosmetic needs. Our in-house Acne Treatment Center offers complete care for all ages and acne stages. We offer a full line of skin care products designed to suit your unique...

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