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

Dennis R. Long, MD Inc

Organization Legal Medicine · NPI 1407954852

Dennis R. Long, MD Inc is a Legal Medicine in Orange, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
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

2601 E Chapman Ave
Orange, CA 92869-3206
Phone: (951) 532-5005
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Legal Medicine (primary) Taxonomy 173000000X · Licence 00G472430 (CA)

Record details

NPI number1407954852
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Sandi Williamson — Office Manager · (951) 532-5005
NPI enumeratedSeptember 20, 2006
Last updated in NPPESApril 16, 2009
Mailing addressPo Box 68, Norco, CA 92860-0068

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