Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. David Lee Christiansen, PSY.D.

Counseling Psychologist in Greeley, CO · enumerated 2009 · practices at Aspen Counseling Pllc.

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

National Provider Identifier

1164661666

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Registry record

Entity type Individual (Type 1)

Name Dr. David Lee Christiansen

Credential PSY.D.

Sex Male

Practice address Greeley, CO, 80634

Phone (970) 352-2774

Fax (970) 352-2774

Enumeration date Feb 7, 2009

Last updated in NPPES Feb 7, 2009

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 1900 (CO) Secondary

103TC1900X Counseling Psychologist Behavioral Health & Social Service Providers · License 1900 (CO) Primary

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

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 David Christiansen?

The National Provider Identifier (NPI) for David Christiansen is 1164661666, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Christiansen practice?

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

Other providers at this practice address

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Kelli Milke Acupuncturist · Greeley, CO NPI 1245531896 Cynthia Franklin Mechanotherapist · Greeley, CO NPI 1356649800 Monica Canzona Massage Therapist · Greeley, CO NPI 1336605823 Brenda Moreno Massage Therapist · Greeley, CO NPI 1487393823 Aspen Counseling Pllc Marriage & Family Therapist · Greeley, CO NPI 1184488496

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-07.