Our Doctors and Our Team

Our Dermatologists, Greg J. Nelson M.D. and Helen H. Nam M.D. , are Board Certified Dermatologists. They met during their training at the University of Southern California and are married to each other. They have three teenage children. Each of our doctors have areas of special interest and expertise to offer you. Dr. Nelson is fluent in Spanish and Dr. Nam speaks Korean.

Dr. Nelson loves general and pediatric dermatology and is always excited by challenging skin conditions. He worked as a USC assistant clinical instructor and the staff dermatologist at USC University Hospital before going into private practice. He strives to provide personalized service with good value to our patients. In this spirit, all items dispensed from the office are provided virtually at cost. He enjoys surfing on weekends, being with his family, and relaxes by reading dermatology case reports. (really!)

Dr. Nam is a talented Dermatologic surgeon and performs the cutaneous surgeries. She performs Mohʼs Surgery which is optimal for removal of certain skin cancers. She also coordinates closely with Valley Presbyterian Hospital Pathology Department when frozen sections are employed during surgery. Dr. Nam has a refined aesthetic sensibility that she brings to her cosmetic procedures as well. She Injects Botox, Dysport, and various volume enhancing fillers. She also has years of expertise with chemical peels. She utilizes a Q-switched YAG laser for removal of unwanted pigmented spots. She likes to hike with friends, discover new healthy recipes to cook, and endeavors to learn French.

Our Doctors

Dr. Greg J. Nelson, MD

Van Nuys, CA Dermatologist - DR. Greg J.
Nelson, MD

  • California State University, Sacramento. Bachelor of Arts 1984.
  • UCLA School of Medicine, Doctor of Medicine received in 1988 with Honors in Medicine
  • UCLA-San Fernando Valley Medicine Internship 1988-1989
  • USC Residency in Dermatology, 1989-1992.
  • Certified by the American Board of Dermatology
  • Fellow of the American Academy of Dermatology

Dr. Helen H. Nam, MD

Van Nuys, CA Dermatologist - Dr. Helen H.
Nam, MD

  • USC Biomedical Engineering. Bachelor of Sciences 1982
  • USC School of Medicine, Doctor of Medicine 1982-1986
  • LA County- USC Surgical Internship 1987
  • LA County-USC Internal Medicine Internship 1988
  • LA County-USC Dermatology Residency 1988-1991
  • Certified by the American Board of Dermatology
  • Fellow of the American Academy of Dermatology
  • Member of the American Society of Mohs Surgery

Our Team

We are fortunate to have a very dedicated and friendly office staff. Perla and Priscilla will facilitate documenting your medical history and assist in office procedures. Julie is our office manager and medical biller. They have been with our office for years and are committed to addressing your needs throughout the visit.


I am delighted to have been with the Valley Dermatology team for over 21 years. I first joined the practice when it was launched in 1994. While I enjoy assisting in all areas, my main expertise is the billing department. I am also the office manager. I have been married for 25 years and have 3 teenage daughters. They are all very active in sports and school. I spend my outside time with the girls and my husband.


I have been working side by side with Dr. Nelson and Dr. Nam for more than ten years. I love coming to work and making our patients feel comfortable. It is such a rewarding feeling to put our patients at ease and take care of their needs. I most enjoy working in the back office. This includes taking patient history and assisting in procedures. I also assist Dr. Nam with surgical procedures.

I have been married for 12 years and have two beautiful boys. I love to garden, grow my own vegetables, and raise hens. My remaining time is often spent at the baseball fields.


I started my career in the medical field over ten years ago with Dr. Nam and Dr. Nelson and have found this to be a happy fit for me. I work in the front office where I get to greet all our patients and help them with their scheduling needs. I also take patient histories and may assist in minor procedures. I am devoted to making your visit a pleasant one. I have two boys and a dog named Sam. I spend my free time with friends and family and enjoy the outdoors.

Office Hours

8:30 am - 5:00 pm
8:30 am - 5:00 pm
8:30 am - 5:00 pm
8:30 am - 5:00 pm
8:30 am - 5:00 pm


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