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Castle Rock Medical Group

Colon & Rectal Surgery Physician in San Diego, CA · enumerated 2006 · authorized official Ronald Gertsch, Medical Director.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669427506

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Registry record

Entity type Organization (Type 2)
Legal business name Castle Rock Medical Group
Other name <Unavail>
Practice address 8705 Complex Dr, San Diego, CA, 92123
Phone (858) 565-6000
Fax (858) 627-0050
Enumeration date May 22, 2006
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Ronald Gertsch
Title Medical Director
Phone (858) 565-6000

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where is Castle Rock Medical Group located?
The practice location on file with NPPES is in San Diego, CA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.