Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Ronald Robert Mackenzie, LCSW

Clinical Social Worker in Greenfield, CA · enumerated 2008 · practices at Psynergy Programs, Inc..

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

National Provider Identifier

1629227780

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Registry record

Entity type Individual (Type 1)

Name Mr. Ronald Robert Mackenzie

Credential LCSW

Sex Male

Practice address 215 Huerta Ave, Greenfield, CA, 93927

Phone (831) 674-2180

Enumeration date Sep 13, 2008

Last updated in NPPES Jan 30, 2019

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 66544 (CA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
101YM0800X	Other	CA	COUNSELOR/MENTAL HEALTH

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

What is the NPI number for Ronald Mackenzie?

The National Provider Identifier (NPI) for Ronald Mackenzie is 1629227780, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ronald Mackenzie practice?

The practice location on file with NPPES is in Greenfield, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-30.