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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mark Alderson Roesler, DC

Chiropractor in Florissant, MO · enumerated 2006.

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

National Provider Identifier

1801994017

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Registry record

Entity type Individual (Type 1)
Name Mark Alderson Roesler
Credential DC
Sex Male
Practice address Florissant, MO, 63033
Phone (314) 838-2220
Fax (314) 838-8161
Enumeration date Sep 20, 2006
Last updated in NPPES Oct 20, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 005161 (MO) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
4400116 Other MO UNITED HEALTHCARE
431429608R Other MO MERCY
12448 Other MO BLUE CROSS BLUE SHIELD
140674900 Other MO DEPT OF LABOR

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 Mark Roesler?
Mark Roesler is registered in NPPES with the primary taxonomy of Chiropractor. 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 2010-10-20.