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

Gregory J Withers MD Inc a Medical Corp

Organization Neurological Surgery Physician · NPI 1619020484

Gregory J Withers MD Inc a Medical Corp provides Neurological Surgery Physician services in Arcadia, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.
Corp — Corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

301 W Huntington Dr Ste 407
Arcadia, CA 91007-3462 Not confirmed with CMS for 15 years — call before visiting
Phone: (626) 821-3440
Fax: (626) 821-0709
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence G27800 (CA)

Record details

NPI number1619020484
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Gregory Withers — President · (626) 821-3440
NPI enumeratedJanuary 18, 2007
Last updated in NPPESDecember 8, 2010
Mailing address301 W Huntington Dr, Suite 407, Arcadia, CA 91007-3462

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