Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Aaron John Grace, PSY.D.

Health Psychologist in Waukesha, WI · enumerated 2009.

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

National Provider Identifier

1720311467

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Registry record

Entity type Individual (Type 1)

Name Dr. Aaron John Grace

Credential PSY.D.

Sex Male

Practice address 210 Nw Barstow St, Suite 201, Waukesha, WI, 53188

Phone (262) 548-6903

Fax (262) 548-3820

Enumeration date Sep 14, 2009

Last updated in NPPES Oct 29, 2012

Taxonomy & licenses

103TH0004X Health Psychologist Behavioral Health & Social Service Providers · License 3049-57 (WI) Primary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 3049-57 (WI) Secondary

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

Other identifiers

Identifier	Type	State	Issuer
1720311467	Medicaid	WI	-

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Aaron Grace?

Aaron Grace is registered in NPPES with the primary taxonomy of Health Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-29.