Our Practice

Our friendly staff looks forward to meeting you.

Meet Our Dedicated Staff

Dr. Weitzbuch and Dr. De Stefano surround themselves with a team of caring, professional registered nurses and support staff. Several of the nurses have worked in the office for 15 years or more. The welcoming atmosphere of the office, the professional, personalized care and Dr. Weitzbuch’s and De Stefano's expertise and skill keep patients returning for years.

Our Healthcare Providers

  • Hal M. Weitzbuch, M.D.
    Hal M. Weitzbuch, M.D.
    Dermatologist & Mohs Surgeon

    Dr. Weitzbuch is the medical director of the Calabasas Dermatology Center. He specializes in Mohs micrographic skin cancer surgery, laser-assisted liposuction, and customized cosmetic treatments.

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  • Robert De Stefano, M.D.
    Robert De Stefano, M.D.
    Board-Certified Dermatologist and Dermatopathologist

    For more than 40 years, Robert De Stefano, M.D., has provided his patients with medical expertise and the highest quality skin care. He is a Fellow of The American Academy of Dermatology, Fellow of The American Society for Laser Medicine and Surgery and Fellow of The American Society of Dermatopathology. He has received academic and teaching awards, is certified in Dermatopathology and is an Emeritus Clinical Professor of Medicine at UCLA.

  • Tina Malcom, RN
    Tina Malcom, RN
    Cosmetic Nurse

    Tina Malcolm is a Registered Nurse and has been treating patients at the Calabasas Dermatology Center office since 2001. She brings her calming and compassionate nature to our office daily and treats our aesthetic patients with the highest level of skill. Tina seeks to identify and understand each patient's needs, listening and responding appropriately to achieve the desired outcome. Her finesse, sophistication and experience give her the utmost ability to provide what you are seeking, keeping it natural and never leaving you looking "fake".

    Tina's cosmetic specialty comprises nearly all injectables such as Botox, Juvederm, Voluma, Radiesse, Belotero, Sculptra, Restylane and sclerotherapy. Also, she has treated thousands of patients with laser and light treatments including IPL FotoFacials, CO2 laser skin resurfacing, and laser hair removal. Tina is highly trained in all of these procedures, having worked as a clinical educator for lasers and IPL machines to teach other offices. It's no surprise that Tina has made a guest appearance on "The Doctors" demonstrating a Thermage procedure for skin tightening, as she is a master of this craft as well.

    Tina is committed to maintaining the highest standard of care for our patients through ongoing continuing education and seminars. Working alongside our medical director, Dr. Weitzbuch, she is passionately dedicated to helping each patient customize a plan to meet their needs for enhancing natural beauty and aging gracefully.

  • Emily Craft NP-BC
    Emily Craft NP-BC
    Nurse Practitioner

    Emily Craft NP-BC is Calabasas Dermatology Center’s board certified Nurse Practitioner. She graduated from the prestigious University of California, Los Angeles (UCLA) with honors. Emily went on to complete her Master degree program in Nursing at UCLA and became a Family Nurse Practitioner. As a member of the Dermatology Nurses Association and American Nurses Association, Emily has found her passion in skin care. To supplement her education, Emily has received training from top leaders in the fields of Plastic Surgery as well as Dermatology in Santa Monica and San Francisco. With excellence in mind, she also gained immense experience at Norris Cancer Center in the fields of oncology, hematology and bone marrow transplants.

    Emily’s expertise is not limited to performing cosmetic dermal fillers, Botox, and neurotoxins. Her ability to perform the full range of dermatological procedures including simple biopsies, as well as full skin exams and treating rashes, makes her an invaluable member of the Calabasas Dermatology Center team. Her dedication to the art of dermatology and skin care is exceptional. She provides personalized care for each patient and always strives to make each patient look and feel their absolute best, whether to bolster self-confidence or to be red carpet ready. Always working to achieve natural results, Emily will address any concerns, questions or specific requests and discuss your ultimate goal prior to any procedure. Her personality, experience and knowledge about dermatology have made her a highly sought-after Nurse Practitioner and we couldn’t be happier to have her on our team!


Our Nurses & Staff

  • Ann Bui
    Ann Bui
    Patient Care Concierge

    Ann Bui, our talented patient care concierge, is highly trained in the aesthetic industry as a patient care and surgical coordinator. She also worked as a make-up artist and skincare product specialist, where she was directly involved with the creation of advanced anti-aging facial products for individuals of all skin types and conditions. Her expertise transcends dermatology, cosmetic and plastic surgery and her savvy is not limited to the skin’s beauty, health and treatment. With more than fifteen years of experience, her career has been guided by leading dermatologists and cosmetic surgeons and it shows. With exceptional skills and an abundance of experience, Ann is a remarkable member of the Calabasas Dermatology Center team. Her cheerful and warm personality makes patients desire the comfort and guidance of Ann when seeking a cosmetic procedure or treatment.

  • Diane Lipson
    Diane Lipson
    Licensed Esthetician

    Diane received her Master Esthetician license at the top of her class in Utah. Her extensive knowledge and experience includes acne treatments, chemical peels, Microdermabrasion, and extends throughout the entire scope of facial skin care. She is an expert in creating proactive plans driven by the needs of individual skin, and believes with skin care, like any routine, that consistency yields the best results.

  • Martha Scrimenti, RN
    Martha Scrimenti, RN
    Medical Nurse

    Martha graduated from Northern Illinois University with a Bachelor of Science in Nursing degree. After working 3 years in a hospital, she moved to a family practice office for 9 years. Since moving to California, Martha joined our Dermatology office and has been caring and loving our patients for over 26 years.

  • Eileen Nilsen, RN
    Eileen Nilsen, RN
    Medical Nurse

    Eileen graduated from the New Rochelle Hospital Medical Center School of Nursing. She then worked in Critical Care ER at Nyack Hospital in New York, and Pediatrics at Ridgewood Community Hospital in New Jersey. She then joined our Dermatology practice over 19 years ago, and has built a strong and loving relationship with our patients ever since.

  • Katie West
    Katie West
    Registered Nurse

    Katie has been with our practice since 2010 and plays an intricate roll in assisting our patients and physicians. She is the newest Registered Nurse to join the team, even though she started working in the office filing charts!

  • Andrea Rudell
    Andrea Rudell
    Nurse Assistant

    Andrea grew up in Moorpark and has been in the office since 2013. She completed medical assisting school and is an exceptional nurse assistant. She is loved by all of our patients and is a critical part of our team.

  • Jan West
    Jan West
    Office Manager

    Jan has been our office manager for over 16 years, and is a member of the Association of Dermatology Administrators and Managers.

  • Jordan Klossner
    Jordan Klossner

    Jordan has over 10 years experience working and assisting in medical practices. She is very knowledgable in the medical field, and is always available to assist you with questions as she greets you when you enter, and helps you check out.

our practice
Call us today
(818) 222-7495
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Hours of Operation

Mon - Fri: 8:30AM - 5PM
Saturday: By Appointment
Sunday: Closed

Visit our office
Calabasas Dermatology Center
23501 Park Sorrento, Suite #216
Calabasas, CA 91302
City Winner of Calabasas Doctors Choice Awards in Dermatology 2014