Karen Nern, MD

Dr. Karen Nern is a Colorado native. She is a Board Certified Dermatologist and dermatologic surgeon. She has expertise in general and pediatric dermatology. She performs Mohs micrographic surgery, and has extensive experience treating both benign and malignant skin growths. She also performs many cosmetic procedures, including Botox®, Juvederm™, Voluma™,  Kybella™, and chemical peels. As of December 2015, Dr. Karen Nern has transitioned her personal practice to surgery and cosmetic procedures only.


  • Diplomate, American Board of Dermatology (board certified)
  • Fellow, American Academy of Dermatology
  • Fellow, American Society for Mohs Surgery
  • Women's Dermatology Society fellowship award recipient
  • Colorado Dermatology Society member
  • Licensed to practice medicine in Colorado


  • Bachelor of Science, Finance - Arizona State University
  • Master of Business Administration - San Diego State University
  • Doctor of Medicine - University of California, Davis
  • Internship - Scripps Mercy Hospital, San Diego, CA
  • Dermatology Residency - University of California, San Diego

"I needed a Mohs surgery on my face. I was scared of course. The staff and Dr. Nern put me at ease and I felt completely supported. My results were amazing just two weeks after. I would recommend Vail Dermatology to everyone!" -Kimberly

"Before I went to Vail Derm, I checked with a friend who had a similar procedure to mine done by Dr. Nern. She called Dr. Nern a 'rock star'. She was right. Dr. Nern and the entire staff did a great job!" -Robert

"I believe in Dr. Nern, her care is exceptional. Her expertise is exceptional. I feel that she sincerely cares about me- that I and my health are important to Dr. Nern." -Betsy

Clare Foss, MD

Dr. Foss is board certified and currently accepting appointments at our Edwards and Basalt locations. Dr. Foss provides dermatological services that are consistent with Vail Dermatology's mission and goals. She enjoys treating children and adults with a wide variety of skin diseases. Dr. Foss and her husband have traded East Coast living for our beautiful mountain community where they are raising their 2 boys, and 1 dog. They enjoy skiing, biking and hiking.


  • Diplomate, American Board of Dermatology (board certified)
  • Fellow, American Academy of Dermatology
  • Women's Dermatologic Society
  • Licensed to practice medicine in Colorado


  • Dermatology Residency - Eastern Virginia Medical School Dermatology Research
  • Fellowship - Virginia Clinical Research Internal Medicine
  • Internship - Eastern Virginia Medical School
  • Doctor of Medicine - Medical College of Georgia
  • Bachelor of Science - Georgia Institute of Technology

"I had an appointment with Clare Foss and I was very pleased. I found the staff to be very professional when I checked in. Clare was very knowledgeable and gave me a great course of action to treat my skin." -Casey

"Dr. Foss provided excellent care and attention. Gentle and genuinely concerned. I plan to keep returning for my dermatological needs." -Nancy

Kelly Morrissey Williams, MD

Originally from Rockville, Maryland, Dr. Kelly Morrissey Williams graduated with honors from Harvard University, where she was awarded the Detur Prize and the John Harvard Scholarship for Academic Achievement. She attended Case Western Reserve University School of Medicine in Cleveland, Ohio where she pursed dermatologic research and was elected into the Alpha Omega Alpha Honor Society. During college and medical school, she received three National Institutes of Health Summer Research Fellowships. After completing an internship at Summa Akron City Hospital in Ohio, Kelly completed a combined dermatology residency and cutaneous oncology fellowship at the University of Pennsylvania in 2013. She was an Assistant Professor in Dermatology at the University of Colorado from July 2013 until June 2014 before pursing a fellowship in dermatopathology at Tufts Medical Center in Boston, MA. Dr. Williams  primary research interest is skin cancer detection and prevention.

She is an avid skier and hiker. She is excited to be able to live in the Vail Valley year round and join the active community here. Dr. Morrissey Williams and husband Mark welcomed their first child last August.


  • University of Colorado, Assistant Professor 2013-2014
  • Alpha Omega Alpha Honor Medical Society Fellow
  • American Academy of Dermatology Fellow
  • American Society of Dermatopathology Fellow


  • Harvard University, BA
  • Case Western School of Medicine, MD
  • University of Pennsylvania, Residency
  • University of Pennsylvania, Cutaneous Oncology Fellowship
  • Tufts University, Dermatopathology Fellowship

Kathleen Mannava, MD

Dr. Mannava is a board certified dermatologist and dermatopathologist, currently accepting new patients at our Edwards, Frisco, and Basalt locations. Originally from upstate New York, she completed her dermatology residency at Brown University and dermatopathology fellowship at Wake Forest University. She enjoys treating children and adults for a wide variety of dermatologic concerns. Dr. Mannava moved to Colorado in June 2016 with her husband, two young daughters, and dog. They are enjoying exploring their new surroundings, hiking, and skiing. They also enjoy trying new restaurants, and watching college and professional sports.


  • Wake Forest University, Fellowship
  • Alpha Omega Alpha Honor Medical Society Fellow
  • American Academy of Dermatology Fellow
  • American Society of Dermatopathology Fellow


  • Williams College, BA
  • State University of New York (SUNY) Upstate
  • Medical University, MD
  • Brown University, Residency

Drew Taylor, MD

Dr. Drew Taylor will be joining us July 2017. Dr. Taylor specializes in Cosmetics and Mohs Surgery.

Winslow Blankenship, MD

Dr. Winslow Blankenship will be joining us September 2017.

Sarah Youngblood, PA-C

Sarah Youngblood PA-C, is an experienced dermatology physician assistant and has practiced with Vail and Aspen Dermatology for 9 years. She provides comprehensive medical and dermatologic care for adults and pediatrics including skin cancer screen exams, rashes, acne, biopsies and treating other skin disorder. She performs excisions, treats both benign and malignant skin growths  and performs cosmetic procedure such as Botox. Sarah values patient education and enjoys counseling her patients about their skin. She enjoys her kids, hiking, and traveling.


  • National Commission on Certification of Physician Assistants
  • American Academy of Physician Assistants
  • Licensed to practice medicine in Colorado
  • Colorado Dermatology Society


  • Bachelor of Art, Art History – James Madison University
  • Physician Assistant Program – Wake Forest University School of Medicine

Kirsten Kuhn, PA-C

Kirsten Kuhn is a certified PA now accepting patients at our Breckenridge location.

Kirsten strives to provide high-quality dermatologic care to patients of all ages. She is passionate about preventing and detecting skin cancer, and enjoys helping people look their best and learn to protect their skin. Kirsten earned her PA degree from the School of Medicine at OHSU in Portland. Prior to attending graduate school, she worked along side Dr. Nern as a Medical Assistant for 2 years and is thrilled to return to the mountains as a member of the Vail | Aspen | Breckenridge Dermatology team. In her free time, Kirsten enjoys skiing, cycling, and trail running.


  • NCCPA certified and licensed to practice medicine in Colorado
  • Fellow, Society of Dermatology Physician Assistants
  • Fellow, American Academy of Physician Assistants
  • Fellow, Colorado Academy of Physician Assistants
  • Athletic Board Scholar, UW-Madison


  • University of Wisconsin-Madison, BA with Distinction
  • Oregon Health and Science University, MPAS

    Claire Mann, RN, BSN, MSN

    Claire Mann, RN, BSN, MSN is an experienced Registered Nurse with a background in Dermatology and wound care.  She is an experienced cosmetic injector and has trained with Dr. Karen Nern to gain expertise in cosmetic procedures such as Botox, Juvederm, Kybella and Thermiva. She is enrolled at the University of Colorado in the Adult-Geriatric Nurse Practitioner program and is expected to complete the program Summer of 2017 at which time she will see general, surgical and cosmetic dermatology patients. Claire values patient satisfaction and wants to ensure that every patient feels well taken care of. She enjoys all the activities that Colorado has to offer.


  • Registered Nurse, Licensed to Practice Nursing in the State of Colorado
  • Member, Dermatology Nurses Association
  • Member, American Professional Wound Care Association
  • Member, National Academy of Dermatology Nurse Practitioners


  • Adult Geriatric Nurse Practitioner- University of Colorado, anticipated 2017
  • Master of Science, Nursing- University of Colorado, 2016
  • Bachelor of Science, Nursing- University of Akron, 2011

Vail Dermatology

1140 Edwards Village Blvd, Suite B-200
Edwards, CO 81632
Get Directions
Tel: 970-926-9226
Fax: 970-926-8755

Aspen Dermatology | Willits

261 Robinson Street, Suite C-100
Basalt, CO 81621
Get Directions
Tel: 970-927-2800
Fax: 970-926-8755

Breckenridge Dermatology

984 N. Ten Mile Dr #103,
Frisco, CO 80443
Get Directions
Tel: 970-668-0998
Fax: 970-926-8755

Aspen Dermatology | Aspen

300 S. Spring St., Coming Soon | Summer 2017
Aspen, CO 81611
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