Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Aimee Elizabeth Niebuhr Sullivan, PH.D.

Clinical Psychologist in Aurora, CO · enumerated 2014.

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

National Provider Identifier

1225436918

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Registry record

Entity type Individual (Type 1)

Name Dr. Aimee Elizabeth Niebuhr Sullivan

Credential PH.D.

Sex Female

Practice address 13199 E Montview Blvd, Suite 330, Mail Stop F550, Aurora, CO, 80045

Phone (303) 724-3300

Fax (303) 724-4698

Enumeration date Dec 11, 2014

Last updated in NPPES Feb 10, 2015

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 4174 (CO) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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 Aimee Sullivan?

The National Provider Identifier (NPI) for Aimee Sullivan is 1225436918, a Type 1 (individual) record in the CMS NPPES registry.

Where does Aimee Sullivan practice?

The practice location on file with NPPES is in Aurora, CO. 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 2015-02-10.