Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Peterson, PSY.D.

Clinical Psychologist in Windsor, CA · enumerated 2022 · practices at Dobbs Psychology Inc.

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

National Provider Identifier

1417600511

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Peterson

Credential PSY.D.

Sex Male

Practice address 8911 Lakewood Dr # 26a, Windsor, CA, 95492

Phone (916) 798-7072

Enumeration date Jan 28, 2022

Last updated in NPPES Jan 28, 2022

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSB94026068 (CA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

Other identifiers

Identifier	Type	State	Issuer
18611570000	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.

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Frequently asked questions

Is NPI 1417600511 active?

Yes, as of the latest NPPES snapshot, NPI 1417600511 is active (record last updated 2022-01-28).

How do I verify Mark Peterson's NPI record?

Cross-check NPI 1417600511 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Dobbs Psychology Inc Clinical Neuropsychologist · Windsor, CA NPI 1861157000

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-28.