Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Allen Lee Diercks, D.C.

Chiropractor in Davenport, IA · enumerated 2006.

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

National Provider Identifier

1992771695

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Allen Lee Diercks

Credential D.C.

Sex Male

Practice address 2322 E Kimberly Rd, C 1, Davenport, IA, 52807

Phone (563) 388-9492

Fax (563) 388-0019

Enumeration date Feb 23, 2006

Last updated in NPPES Aug 21, 2019

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 4736 (IA) 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
0203828	Medicaid	IA	-

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

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 Allen Diercks?

Allen Diercks 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-21.