Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Margaret M Shannon, MD, Inc

Organization Dermatology Physician · NPI 1326358052

Margaret M Shannon, MD, Inc provides Dermatology Physician services in Costa Mesa, California. Licensed in California. Registered with an NPI since 2010.

Licensed in
CA
In the registry since
2010
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

275 Victoria St Ste 1H
Costa Mesa, CA 92627-1906 Not confirmed with CMS for 15 years — call before visiting
Phone: (949) 646-2311
Fax: (949) 646-1064
Show map & directions

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

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence G42251 (CA)

Record details

NPI number1326358052
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Margaret Shannon — Owner · (949) 646-2311
NPI enumeratedOctober 15, 2010
Last updated in NPPESNovember 2, 2010
Mailing address275 Victoria St Ste 1h, Costa Mesa, CA 92627-1906

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