Dr. Robert Leposavic

M.D.

Robert Leposavic, MD, is a board-certified general dermatologist specializing in Mohs micrographic surgery. He currently sees patients at LUX Dermatology, located in Sparks and Las Vegas, Nevada, and with offices across California in Stockton, Manteca, Santa Barbara, Porterville, Hanford, and Visalia.

Dr. Leposavic earned his Bachelor of Science in chemistry, graduating summa cum laude from the University of California at Berkeley. He then attended the University of Nevada School of Medicine, where he obtained his medical degree. He then completed an internal medicine residency at the University of California, Davis Medical Center, and a dermatology residency at the University of Kansas Medical Center. Before becoming a dermatologist, Dr. Leposavic was a Chemical Engineer at IBM in San Jose, California, for four years, where he developed thin-film magnetic heads and received four Outstanding Achievement awards.

He began practicing dermatology in 2000 in Topeka, Kansas, and has since been practicing in California and Nevada. Dr. Leposavic practiced dermatology for sixteen years at the Sansum Santa Barbara Medical Foundation Clinic in Santa Barbara, California. In 2005, he became a partner of Desert Dermatology in Las Vegas, Nevada.

In addition to practicing dermatology, Dr. Leposavic has given presentations and multiple lectures on a variety of topics, such as mast cells and Basophil, the molecular mechanisms of cell signaling and dermatology. He was also a Principal Investigator for the Enbrel EASE Study from 2004 to 2005.

Dr. Leposavic is a member of the American Academy of Dermatology, Alpha Omega Alpha Honors Medical Society, and Santa Barbara Medical Society.

Dr. Raymond Kleinfelder, III

D.O.

Raymond Kleinfelder, DO, is a compassionate and experienced dermatologist specializing in skin cancer treatment at LUX Dermatology in Santa Barbara, California.

Dr. Kleinfelder is a native of Buffalo, New York. He received his bachelor’s degree from Canisius College, where he majored in biology with a minor in sociology. 

After graduation, he attended medical school at Midwestern University in Downers Grove, Illinois. While in medical school, he was inducted into Sigma Sigma Phi, the prestigious osteopathic medicine fraternity for med students. He was named as “Guardian of the Profession” from the American Osteopathic Association and was awarded an honorary grant from the American Osteopathic Foundation. 

Prior to becoming a resident, he served as a sub-investigator for over a dozen clinical trials at the Center for Clinical and Cosmetic Research™ in Aventura, Florida. He then completed his dermatology residency at Larkin Community Hospital’s Palm Springs Campus in Miami, Florida, where he served as chief resident. 

Following his specialty training, he pursued a medical internship at Genesys Regional Medical Center in Grand Blanc, Michigan. 

Dr. Kleinfelder practices cosmetic, surgical, and medical dermatology on patients of all ages and skin types. He has a special interest in severe psoriasis and atopic dermatitis (eczema), but provides comprehensive treatment for all skin conditions. 

Steven Lutzker

M.D.

Dr. Lutzker has been practicing medicine for over 50 years. He is a board-certified dermatologist specializing in general dermatology. Dr. Lutzker sees patients in our Central Valley locations in Porterville, Visalia and Hanford, California.

Dr. Lutzker earned his Medical Degree at Albert Einstein College of Medicine in Bronx, N.Y. Next came his Internship and Residency at the US Public Health Service Hospital in San Francisco, California. His Radiology Residency and Nuclear Medicine Residency was completed in New York City. His Dermatology Residency was at Temple University of Pennsylvania located in Philadelphia, Pennsylvania.

Dr. Lutzker has been practicing in the State of California for many years. He understands that dermatology services are needed in California due to the sunny climate. Dr. Lutzker develops individual treatment plans for each of his patients. Dr. Lutzker is board certified with the following boards: Diplomate American Board of Dermatology, Diplomate American Board of Radiology, and Diplomate American Board of Nuclear Medicine. He is also a member of the following Professional Organizations: American Academy of Laser Medicine and Surgery, American Society for Dermatology Surgery and the American Academy of Dermatology.

Dr. Lutzker has authored articles in medical journals as well as doing presentations for various societies in the United States and Europe.

Daisy Hoffert

PA-C, MPAS

Daisy Hoffert, PA-C, MPAS, is a skilled physician assistant specializing in dermatology at LUX Dermatology in Reno, Nevada. She brings over 12 years of experience as a physician assistant and is board certified by the National Commission on Certification of Physician Assistants.

Daisy is a Northern Nevada native who received her bachelor’s degree from the University of Nevada at Reno and completed her Master of Physician Assistant Studies at Touro University in Nevada. Daisy has specialized in medical and surgical dermatology for five years and trained under a Mohs surgeon for several years with a focus on moderate to complex surgical repairs. She also brings a vast array of experience from her years working in multiple fields, including emergency medicine, pain management, hospitalist medicine, in the Department of Corrections, and as part of a team at the US McMurdo Station in Antarctica.

Dedicated to patient education, Daisy encourages her patients to be active participants in their care. As a result, she prides herself on being an advocate for her patients with a focus on navigating the complex and ever-changing health care system. She provides appropriate and effective treatments while maintaining her patient’s quality of life.

When she’s not working, Daisy volunteers for skin cancer screenings with the Carson Tahoe Hospital Cancer Center. She is also an avid world traveler and loves spending time outdoors hiking, cycling, camping, golfing, and spending time with family.

Daisy is affiliated with the American Academy of Physician Assistants, the Society of Dermatology Physician Assistants, and the Nevada Academy of Physician Assistants.

Shawn VanGronigen

PA-C

Shawn VanGronigen is a National Commission Board Certified Physician Assistant, specializing in dermatology. Shawn was a registered respiratory therapist for 16 years prior to graduating from the University of California Davis with a degree as a Physician Assistant. He sees patients in our Hanford and Visalia locations and treats a variety of dermatologic conditions, including acne, psoriasis, rashes, eczema, and warts, as well as general skin exams and biopsies.

Sylvia Seaton

PA-C

Ms. Seaton is a Board-Certified Physician Assistant who graduated from Texas A&M University in College Station, Texas with a Bachelor’s Degree in Biomedical Science and earned her Master’s in Physician Assistant Studies from Arizona School of Health Sciences at A.T. Still University. Sylvia is board certified by the National Commission on Certification of Physician Assistants and is a member of the Society of Dermatology Physician Assistants. She enjoys treating patients of all ages for various acute and chronic dermatologic conditions with an emphasis on skin cancer treatment and prevention. She is located in the Central Valley and currently welcomes new patients in the Porterville, Visalia, and Hanford locations.

Joselyn Johnson

MSN, FNP

Mrs. Joselyn Johnson has been serving the medical population of San Joaquin county since 2008. Mrs. Johnson received her degree as a Nurse Practitioner from San Jose State University. She has specialized in Dermatology for 4 years. Mrs. Johnson is experienced in Cosmetic Dermatology as well as Medical Dermatology. She is certified by the American Academy of Nurse Practitioners. Mrs. Johnson hails from the Bay Area. Her earlier experiences include working as a Registered Nurse at Stanford Health Care in Palo Alto, CA, specializing in Trauma, ENT, Plastics, Cardiology and Urology. As a Nurse Practitioner, she has enjoyed working in Cardiology and Dermatology. It is while working in Dermatology that she was trained in aesthetics, and so her new passion was born. Joselyn explains, “I love supporting men and women in their aesthetic journey, I especially enjoy building trusted relationships and working with patients to achieve their goals, which is to look and feel their best.” Joselyn enjoys spending quality time with her family, hiking and camping. She also enjoys volunteering at her local women’s and children’s shelter.

Erica Moran

PA-C

Erica Moran joined the Lux Dermatology practice in January 2022 and is a Certified Physician Assistant (PA-C) graduating from Touro University Nevada-Henderson. Erica earned her Bachelor of Science degree in Biology with a minor in Gerontology from the University of Nevada Reno. Prior to joining the Lux Dermatology practice, Erica spent over five years in the medical field in various roles thus providing a broad range of experience and insight into quality patient care which Erica is extremely passionate about. We are extremely excited about Erica joining our practice and providing quality care to patients within the greater Las Vegas area.

Gabriela Isenia

PA-C

Ms. Isenia graduated from Suffolk University in Boston, Massachusetts with a Bachelor‘s of Science in Biology. Whereafter, she dedicated several years to Emergency Medical Services as an EMT-B before returning to her native state to complete a Master’s degree program in Physician Assistant Studies at A.T. Still University in Mesa, Arizona. Gabriela is board certified by the National Commission on Certification of Physician Assistants. She currently works out of the Central Valley locations of Visalia, Hanford and Porterville. Gabriela is the newest member of our team and currently accepting new patients.