Dermatology Staff

Dermatology Staff

At North Mountain Dermatology, we recognize that your choice of a dermatologist is driven both by the doctor’s competency and personality. When searching for dermatological treatment, you need a dermatologist who is experienced, understanding and supportive. You get this caring attitude from all the staff at North Mountain Dermatology every day. We are always accepting new patients.Please give us a call today at 602-944-4628.

Tamela B. Tripp, M.D.

Dermatologist in Phoenix, AZ

North Mountain Dermatology

Tamela B. Tripp M.D. is a Board Certified Dermatologist committed to providing her patients with state of the art skin care.

She graduated Summa Cum Laude from Drake University in Des Moines and then matriculated at the University of Iowa College of Medicine where she earned her M.D. degree. After completing a three year Internal Medicine residency here in Phoenix, Dr. Tripp moved to Augusta where she studied Dermatology at the Medical College of Georgia. After completion of her Residency, she moved back to her beloved Valley of the Sun where she joined Dr. Deborah Mendelson in founding North Mountain Dermatology, Ltd.

Dr. Tripp is highly experienced in both adult and pediatric medical and cosmetic dermatology. She offers a full range of dermatologic services from treating stubborn cystic acne with accutane to cosmetic skin procedures like Botox injections for wrinkles and excessive sweating. She is also skilled in use of other cosmetic agents such as Juvederm as well as skin biopsies and excisions.

She is a strong believer in total body skin cancer checks. An avid baseball fan, she has participated for many years in the Arizona Diamondbacks annual Skin Cancer Screening Clinics. When not working, Dr. Tripp loves to dance, exercise, hike and water ski, but never of course, without wearing her sunscreen!

Dr.Tripp, is a Diplomat of the American Board of Dermatology, and a fellow of the American Academy of Dermatology. Additionally, she is a member of the following professional organizations:

Dr. Tripp is devoted to delivering personalized dermatologic care customized to fit each patient’s individual needs. What can she do for you?

Dr. Tripp appointment hours:

Monday & Wednesday 7:30 AM – 2:30 PM
Tuesday & Thursday: 7:30 AM – 12:00 PM



Kristen N. Peterson, RN, MSN, FNP-C

North Mountain Dermatology

Kristen is a Family Nurse Practitioner, board certified through the American Academy of Nurse Practitioners. She received her bachelor’s degree in nursing from Arizona State University and her master’s degree from University of Phoenix, both of which she proudly graduated with honors.

Kristen enjoys and is proficient in all aspects of medical, surgical and cosmetic dermatology, treating all skin problems ranging from the most common such as acne, warts, psoriasis, and eczema, to the most unusual skin disorders. Kristen believes it is essential to educate her patients while developing customized treatment plans to assist them in achieving their desired skin care goals. She provides her patients educational information about skin cancer detection, treatment and prevention. She thoroughly explains each diagnosis and provides recommendations along with all of the risks and alternative treatment options.

Kristen has extensive experience in skin care, having practiced in the dermatology field for over 11 years and treats patients of all ages. Establishing a rapport with her patients and their families is very important to Kristen, and she is dedicated to keeping up with the latest advancements in the field of dermatology.

Kristen also is an expert in performing many aesthetics procedures, and anti-aging modalities. Some of her cosmetic specialties include wrinkle reduction with Botox, plumping the lips with dermal fillers, and reversing the signs of aging with injectable treatments.

In her leisure time, Kristen enjoys cooking, cycling, hiking, and spending time with her friends, loved ones and cherished pets.