Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Steven Engelhardt, DR.

General Practice Dentistry in Manchester, MO · enumerated 2006.

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

National Provider Identifier

1801969852

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Steven Engelhardt

Credential DR.

Sex Male

Practice address 211 Old Meramec Station Rd, Manchester, MO, 63021

Phone (636) 207-0021

Enumeration date Nov 16, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 14455 (MO) Primary

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 Mark Engelhardt?

The National Provider Identifier (NPI) for Mark Engelhardt is 1801969852, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Engelhardt practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.