Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mark Andrew Willoughby, MD

Individual provider Dermatology Physician · NPI 1215931993

Dr. Mark Andrew Willoughby, MD is a Dermatology in Chula Vista, California. Graduated from Ohio State University College of Medicine in 1997, 29 years ago. Practices with Dermatology and Laser Center of San Diego, a 9-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
29
Trained at
Ohio State University College of Medicine
Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

319 F St Ste 102
Chula Vista, CA 91910-2666
Phone: (619) 476-1200
Fax: (619) 420-7849
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence A69750 (CA)

Record details

NPI number1215931993
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 9, 2005
Last updated in NPPESJuly 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDERMATOLOGY
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Dermatology And Laser Center Of San Diego — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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