Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah Maria De Zwaan, DDS

General Practice Dentistry in Grand Rapids, MI · enumerated 2012.

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

National Provider Identifier

1285996819

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Registry record

Entity type Individual (Type 1)

Name Sarah Maria De Zwaan

Credential DDS

Sex Female

Practice address 933 3 Mile Rd Nw Ste 110, Grand Rapids, MI, 49544

Phone (616) 784-6300

Enumeration date Jun 11, 2012

Last updated in NPPES Jan 31, 2017

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 2901020690 (MI) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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

Where does Sarah De Zwaan practice?

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

What is the NPI number for Sarah De Zwaan?

The National Provider Identifier (NPI) for Sarah De Zwaan is 1285996819, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-31.