Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Redwood Regional Medical Group

Body Imaging Physician in Sebastopol, CA · enumerated 2006 · authorized official Helen Collins, President.

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

National Provider Identifier

1982791380

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Registry record

Entity type Organization (Type 2)

Legal business name Redwood Regional Medical Group

Other name <Unavail>

Parent organization Redwood Regional Medical Group

Practice address 652 Petaluma Ave, Suite I, Sebastopol, CA, 95472

Phone (707) 829-2141

Fax (707) 829-2966

Enumeration date Oct 6, 2006

Last updated in NPPES Nov 15, 2007

Taxonomy & classification

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians Primary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians Secondary

2085N0904X Nuclear Radiology Physician Allopathic & Osteopathic Physicians Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Helen Collins

Title President

Phone (707) 546-4062

Other identifiers

Identifier	Type	State	Issuer
GR0049209	Medicaid	CA	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Redwood Regional Medical Group located?

The practice location on file with NPPES is in Sebastopol, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-11-15. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-15.