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

Mark Horowitz DO, Inc

Organization Dermatology Physician · NPI 1952497414

Mark Horowitz DO, Inc provides Dermatology Physician services in Torrance, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
6
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

23550 Hawthorne Blvd Ste 200
Torrance, CA 90505-4722 Not confirmed with CMS for 15 years — call before visiting
Phone: (310) 373-2636
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence 20A7642 (CA)
MOHS-Micrographic Surgery Physician Taxonomy 207ND0101X · Licence 20A7642 (CA)
Dermatopathology Physician Taxonomy 207ND0900X · Licence 20A7642 (CA)
Clinical & Laboratory Dermatological Immunology Physician Taxonomy 207NI0002X · Licence 20A7642 (CA)
Pediatric Dermatology Physician Taxonomy 207NP0225X · Licence 20A7642 (CA)
Procedural Dermatology Physician Taxonomy 207NS0135X · Licence 20A7642 (CA)

Record details

NPI number1952497414
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Horowitz — Owner · (310) 373-2636
NPI enumeratedOctober 4, 2006
Last updated in NPPESMay 23, 2011
Mailing address3521 Lomita Blvd Ste 103, Torrance, CA 90505-5041

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