Mark Sornson, MD

Public-record details

Address

16950 Via Tazon, San Diego, CA 92127

Phone

(858) 521-2393

Listed under

Individual clinicians, Mohs and procedural dermatology, Telehealth (Medicare claims)

NPI

1629189550

NPI status

Active in the NPPES registry

Provider type

Individual provider

Registered specialty (self-reported taxonomy)

Dermatology, MOHS-Micrographic Surgery (207ND0101X)

Credentials listed

MD

License number on NPI record

A69605 (CA)

NPI first issued

Aug 31, 2006

Years since NPI first issued

20 years (since 2006)

License state on NPI record

CA

NPI record last updated

Jun 20, 2023

Medicare enrollment (CMS)

Enrolled: listed in CMS Doctors & Clinicians

Medicare assignment (CMS)

Accepts the Medicare-approved amount as payment in full

Telehealth (CMS)

Medicare claims show telehealth services

Professional school graduation (CMS)

1998 (28 years ago)

Professional school (CMS)

University of California, San Diego School of Medicine

Medicare group practice (CMS)

Sharp Rees-Stealy Medical Group INC (884 clinicians)

Practice locations on file with Medicare (CMS)

1

NPI 1629189550 is active in the federal NPPES registry (CMS) with Dermatology, MOHS-Micrographic Surgery as its self-reported primary taxonomy; license A69605 (CA) is listed on the record. CMS Doctors & Clinicians lists this clinician as enrolled in Medicare. Source: NPPES NPI Registry (CMS) (record). Data as of 2026-10-16.

Public record, not an endorsement. This listing was compiled from public records as of 2026-10-16 and may be incomplete or out of date. Dermatologist Index does not vet, employ, recommend or guarantee dermatology practices; a badge reflects only what the public record showed on that date. Confirm current details with the official record before you decide. The information on Dermatologist Index is not medical advice and does not replace a doctor, nurse, discharge planner or other qualified professional. Do not use it to make decisions about diagnosis or treatment. If you have a medical emergency, call 911. Full disclaimer · Report an error

What these registry facts mean

The NPI (National Provider Identifier) is the federal ID every HIPAA-covered provider uses to bill insurance. This NPI belongs to an individual clinician. The specialty is the taxonomy the provider chose when registering; NPPES does not check it. A license number here is what the provider entered — confirm it with the state board before you rely on it. A registered specialty is not board certification. To check board certification, use the American Board of Dermatology's verification tool (or the American Osteopathic Board of Dermatology for DOs), and confirm the medical license with the state board.

View NPI 1629189550 in the official registry ↗