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Simpson Holzworth

Specialist in Riverview, MI · enumerated 2008 · authorized official David Holzworth, President Physician.

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

National Provider Identifier

1326219270

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Registry record

Entity type Organization (Type 2)
Legal business name Simpson Holzworth
Other name <Unavail>
Practice address 14600 King Rd, Suite D, Riverview, MI, 48193
Phone (734) 479-7310
Fax (734) 479-7307
Enumeration date Mar 19, 2008
Last updated in NPPES Aug 13, 2008

Taxonomy & classification

174400000X Specialist Other Service Providers · License 5101006598 (MI) Primary

Authorized official

Name David Holzworth
Title President Physician
Phone (734) 479-7310

Other identifiers

Identifier Type State Issuer
0458213064 Other MI BLUE CROSS OF MICHIGAN
1302187 Medicaid MI -

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

What is the NPI number for Simpson Holzworth?
The NPI for Simpson Holzworth is 1326219270, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Simpson Holzworth?
NPPES lists David Holzworth (President Physician) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-13.