Board-Certified Nurse Practitioner

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AJ Himmelsbach, MS, MSN, CRNP / ARNP, is a board-certified Nurse Practitioner with more than two decades of experience in dermatology, emergency medicine. He earned his Bachelor of Science in Nursing from Villanova University, graduating cum laude, and went on to complete his Master of Science in Nursing, Adult Nurse Practitioner program at Johns Hopkins University. He also holds a Master of Science in Human Organization Science from Villanova University and a Bachelor of Science from Purdue University.

Himmelsbach has extensive experience in both medical and surgical dermatology and has trained alongside a Mohs surgeon while working in a variety of dermatologic settings across Pennsylvania and Iowa. In addition to his dermatology expertise, Himmelsbach has provided emergency care in a hospital setting and served as a correctional medicine provider, managing acute, chronic, and dermatologic conditions for underserved populations.

A respected educator and lecturer, AJ has served as a guest lecturer at Johns Hopkins School of Nursing and presented on dermatology procedures and skin cancer to professional organizations and community groups. He has also contributed to patient education through health writing, including publications with AAA Central Penn.

AJ is known for his compassionate approach, quick clinical decision-making, and ability to communicate effectively with patients and colleagues alike. His clinical interests include skin cancer detection and treatment, surgical dermatology, and patient education.

He maintains certification through the American Nurses Credentialing Center and holds active nurse practitioner and registered nurse licensure in both Pennsylvania and Iowa. In addition, he is certified in trauma, emergency care, and advanced cardiac life support. AJ is an active member of several professional organizations, including the American Association of Nurse Practitioners, Sigma Theta Tau International Honor Society of Nursing, and previously served on the board of the National Academy of Dermatology Nurse Practitioners.

Outside of his clinical practice, AJ is a graduate instructor for the Dale Carnegie Course in Human Relations Management and is a proud member of the Vidocq Society in Philadelphia, PA.

Board-Certified Nurse Practitioner

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Brandi LaFountain, CRNP, is board-certified by the American Academy of Nurse Practitioners and is a member of Sigma Theta Tau Honor Society. She is also a member of the National Academy of Dermatology Nurse Practitioners as well as the Society of Dermatology Physician Assistants.

Brandi obtained a Bachelor's in Nursing degree from Alvernia University and worked as a Registered Nurse for more than 10 years before continuing her education at Widener University. There she pursued a Master's of Science degree with a focus on family health. She is licensed in the state of Pennsylvania.

Brandi always knew she wanted to take care of others and sought a career in the medical field. She finds joy in helping others and has found her passion in helping patients achieve healthy, beautiful skin. She believes that the key to assisting patients in reaching their healthy skin goals is to have effective communication. This includes listening to each patient's concerns and working toward a solution that works best for the individual.

Board-Certified Nurse Practitioner

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Brittany Flowers, MSN, CRNP, FNP-C, is a board-certified Family Nurse Practitioner through the American Academy of Nurse Practitioners. Originally from Bucks County, Pennsylvania, Brittany earned her Bachelor of Science in Nursing from the University of Pittsburgh, graduating magna cum laude. She went on to complete her Master of Science in Nursing at Thomas Jefferson University.

Brittany spent eight years as a registered nurse in the Intensive Care Unit at the Children’s Hospital of Philadelphia before transitioning to dermatology in 2021. Brittany also served as a mentor and leader on patient safety initiatives. She is currently on track to become a Dermatology Certified Nurse Practitioner (DCNP) in 2024.

With a strong foundation in patient-centered care, Brittany focuses on treating a variety of dermatologic conditions in both children and adults, including skin cancer, acne, psoriasis, rosacea, and atopic dermatitis. Brittany is also skilled in surgical and cosmetic procedures, such as excisions of atypical moles and skin cancers, biopsies, and botulinum toxin injections.

Brittany’s approach emphasizes personalized care, ensuring that each patient's unique needs are met. She believes in building trust and fostering open communication to create a safe environment where patients feel comfortable discussing their dermatologic concerns.

Nurse Practitioner

Darby Sipes, MSN, FNP-C, is a Family Nurse Practitioner with a strong interest in medical dermatology. Her passion for dermatology began at a young age after her mother’s melanoma diagnosis, which instilled in her the importance of sun protection and early skin cancer detection. Her goal is to help patients feel confident in their own skin while emphasizing the importance of skin cancer prevention and early detection. Darby’s favorite conditions to treat include complete body skin exams, acne, and atopic dermatitis. She is passionate about providing evidence-based, compassionate care and helping patients achieve healthy, radiant skin.

Before becoming a nurse practitioner, Darby worked as a registered nurse for over eight years, specializing in oncology, before transitioning to the intensive care unit. Throughout her FNP program, she worked in the post-anesthesia care unit at the R Adams Cowley Shock Trauma Center. She earned her Master of Science in Nursing and Family Nurse Practitioner degree from Frostburg State University.

Outside the clinic, her favorite activities include spending quality time with her husband, son, and two dogs; enjoying time with extended family and friends; going on walks; and exploring new places.

Board-Certified Nurse Practitioner

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Darcelle Wampler, CRNP, is a board-certified Family Nurse Practitioner. She has more than 27 years of experience specializing in dermatology and other areas of family practice, primary care, and hospice. She is passionate about educating and empowering her patients to be proactive with their skin care. Darcelle enjoys caring for patients from the age of six weeks and up.

Darcelle is a native of Newburgh, NY. She attended Westminster College in Salt Lake City, where she obtained her dual Bachelor of Science in Nursing and Psychology. She received her Master of Science in Nursing and Family Practice from the University of Utah. Darcelle is certified with the American Nurses Credentialing Center. She is an active member of the Dermatology Nurse Practitioners and the National Academy of Dermatology Practitioners.

Darcelle’s interest in dermatology began when she elected to complete a clinical rotation for graduate school with Dr. Stanton Lebouitz. She then relocated to York, PA, and joined Dr. Lebouitz’s practice.  

Board-Certified Nurse Practitioner

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Jennifer M. Smith, MSN, FNP-BC, is a board-certified Nurse Practitioner with a strong clinical background and a passion for dermatologic care. She brings a thoughtful, patient-focused approach rooted in evidence-based practice and a deep commitment to education and advocacy.

Jennifer earned both her Bachelor's and Master of Science in Nursing from the University of Pennsylvania School of Nursing. During her advanced training, she completed clinical rotations in internal medicine, urgent care, and online addiction medicine, while also shadowing in Penn Medicine's dermatology and electrophysiology departments. She was recognized as an Amy Gutmann Leadership Scholar for her academic excellence and leadership potential.

She began her nursing career in the Burn ICU at Vanderbilt University Medical Center, where she provided complex care for critically ill patients and served as a charge nurse and preceptor. Most recently, she worked in the Stress Exercise Lab at the Hospital of the University of Pennsylvania, where she monitored cardiovascular function and supported patients through diagnostic testing.

Jennifer holds certifications in Advanced Cardiac Life Support (ACLS), Pediatric Advanced Life Support (PALS), and is a Critical Care Registered Nurse (CCRN). She is a member of the American Association of Nurse Practitioners (AANP) and brings valuable experience in wound care, debridement, and treating both pediatric and adult patients.

She is committed to providing personalized, compassionate care while helping her patients feel confident and informed about their skin health. In her free time, Jennifer enjoys traveling, exploring new restaurants and cuisines, reading, and cheering on her favorite football team, the Philadelphia Eagles.

Board-Certified Nurse Practitioner

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Krista Ferrari, CRNP, is a board-certified Adult-Gerontology Nurse Practitioner. She obtained her certification from the American Academy of Nurse Practitioners. She is an active member of the National Academy of Dermatology Nurse Practitioners, the Pennsylvania Dermatology Physicians Assistants group, and the American Association of Critical-Care Nurses.

Krista Ferrari, a native of Pottstown, PA, is a nurse practitioner with more than 12 years of industry experience specializing in dermatology and other areas such as cardiology and critical care nursing. She attended Eastern University, where she obtained her Bachelor of Science in Nursing, and Neumann University for her Master of Science in Nursing, Adult Gerontology Nurse Practitioner, achieving magna cum laude in both degrees.

Before joining Dermatology Partners, Krista played a critical role in managing an award-winning cardiovascular hospital. Her hands-on experience included the emergency room, critical care, post-anesthesia care, and cardiology. She has been recognized throughout her career as the medical professional who strives to put her patients’ needs first and treats them as she would her own family.

Krista's hobbies include traveling the world and visiting vineyards.

Board-Certified Nurse Practitioner

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Kristin M. Damiano, MSN, CRNP, FNP-BC, is a board-certified Nurse Practitioner with extensive experience in both primary care and dermatologic settings. She earned her Bachelor of Science in Nursing and her Master of Science in Nursing, Family Nurse Practitioner program, from University of Scranton, graduating with honors.

Kristin brings a diverse background in patient care, having served in a variety of clinical environments including intensive care units, cardiovascular services, primary care practices, urgent care, and dermatology offices. Throughout her career, she has been recognized for her clinical excellence, including multiple nominations for the Daisy Award for outstanding nursing care.

Before joining Dermatology Partners, Kristin practiced at Main Line Health’s Concordville Primary Care, where she provided comprehensive care to patients of all ages, managing acute and chronic conditions and coordinating specialist referrals. She also previously worked in dermatology, assisting with both surgical and cosmetic dermatologic procedures, gaining valuable experience in skin health management.

Kristin is known for her empathetic approach, strong critical thinking skills, and commitment to patient education. She is passionate about delivering personalized, evidence-based care to help patients achieve optimal health outcomes. Her clinical interests include preventative care, chronic disease management, dermatologic care, and patient advocacy.

She holds certifications from the American Nurses Credentialing Center and maintains active Pennsylvania licensure as a Registered Nurse and Certified Registered Nurse Practitioner. Kristin is also ACLS and BLS certified and actively participates in professional development to stay current with advances in healthcare.

Outside of her clinical practice, Kristin is an active volunteer with several community organizations, including Main Line Animal Rescue and the Devon Horse Show and Country Fair.

Board-Certified Nurse Practitioner

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Morgan Uebele, CRNP, is a board-certified Adult-Gerontology Nurse Practitioner. She obtained her certification from the American Nurses Credentialing Center and is licensed in the State of Pennsylvania. She is a member of the American Academy of Nurse Practitioners and Sigma Theta Tau International, the Honor Society of Nursing.

Morgan obtained a Bachelor's in Nursing degree with a minor in Human Biology from Gwynedd Mercy College in 2011. Shortly after, Morgan began her nursing career as an R.N. at Phoenixville Hospital, where she remained for five years.  She played an active role as a staff nurse, charge nurse, and was cross-trained to work in the ICU and Acute Rehab. Morgan later obtained her Master of Science degree with a focus in Adult/Geriatric Health from Neumann University in 2016. Morgan treats patients ages 13 and up.

Morgan married her high school sweetheart, Jeffrey, and together they have a son, as well as rescue dogs and cats.  In her spare time, Morgan enjoys hiking, playing with her dogs, playing sports, and doing weekend projects around her house. She has a passion for helping animals and has spent some time working with various rescue groups.

Board-Certified Nurse Practitioner

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Sun Nguyen, FNP-BC, DCNP, is a board-certified Family Nurse Practitioner. She obtained her certification from the American Nurses Credentialing Center and is licensed in the state of Pennsylvania. She is an active member of the American Association of Critical-Care Nurses, the American Academy of Nurse Practitioners, and the National Academy of Dermatology Nurse Practitioners.

Sun began her nursing career as a Surgical Trauma ICU nurse at a level one trauma center in Philadelphia after earning her Bachelor’s in Nursing degree in 2008 from Drexel University. As an RN, Sun played an active role as a staff nurse, charge nurse, and a member of the education, informatics, skin, and unit committees.   She became a nationally certified critical care nurse before her enrollment at La Salle University, where she earned her Master of Science degree with a focus in Family Health.

During her dermatology rotation in NP school, Sun confirmed her passion and enthusiasm for all things dermatology-related. She enjoys working with patients and strives to deliver the utmost quality of care. Sun believes she has the edge to bridge the gap between medicine and nursing by promoting optimal health and providing effective treatments in skin health. Sun treats patients ages 12 and up.

In her spare time, Sun volunteers for the Philadelphia Medical Reserve Corps and the American Red Cross. She enjoys traveling, eating, and snowboarding, and has also picked up running, with a Broad Street Run under her belt. Most importantly, she loves spending time with her family, including her nine nieces and nephews and her small dog Porkchop.