Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Clifford C Douglas MD Inc

Specialist in Riverside, CA · enumerated 2007 · authorized official Valerie Payne, Manager.

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

National Provider Identifier

1619171980

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Clifford C Douglas MD Inc

Practice address 4000 14th St Ste 302, Riverside, CA, 92501

Phone (951) 682-3583

Enumeration date Jun 12, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

174400000X Specialist Other Service Providers · License G70288 (CA) Primary

Authorized official

Name Valerie Payne

Title Manager

Phone (951) 682-3583

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 Clifford C Douglas MD Inc located?

The practice location on file with NPPES is in Riverside, 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.

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