Dan R Hartwig, DDS

Dan R Hartwig is a Dentist provider (Dentist) practicing in Arnold, MO, registered in the NPPES registry with NPI 1992091581 since 2011. The credential DDS stands for Doctor of Dental Surgery. Practices at Missouri Dental Professionals, Richard Straus, Dmd, PC (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1992091581
Entity type	Individual (Type 1)
Name	Dan R Hartwig
Credential	DDS
Sex	Male
Practice address	3608 JEFFCO BLVD, Arnold, MO, 63010
Phone	6364641008
Fax	6364641217
Enumeration date	2011-06-22
Last updated in NPPES	2011-06-22

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
122300000X	Dentist	Primary	2011016746	MO

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

Copy-ready billing details

Provider: Dan Hartwig, DDS
NPI: 1992091581
Taxonomy: 122300000X (Dentist)
Address: 3608 JEFFCO BLVD, Arnold, MO, 63010

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1770643421	Jo Owen	Individual	Mental Health Counselor	Arnold, MO
1083753586	Stephen Owen	Individual	Dentist	Arnold, MO
1720208044	Missouri Dental Professionals, Richard Straus, Dmd, PC	Organization	General Practice Dentistry	Arnold, MO
1831085380	Taylor Swim	Individual	General Practice Dentistry	Arnold, MO

Verify this record

Cross-check NPI 1992091581 against the authoritative CMS record: view Dan R Hartwig on the official NPPES registry .

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 or validate an NPI number.

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 Dan Hartwig?

Dan Hartwig is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2011-06-22.