Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Gregory Dean Lettman, D.C.
Chiropractor in Dubuque, IA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1114960226
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Registry record
Entity type Individual (Type 1)
Name Dr. Gregory Dean Lettman
Credential D.C.
Sex Male
Practice address 2095 John F Kennedy Rd, Dubuque, IA, 52002
Phone (563) 588-9200
Fax (563) 583-6594
Enumeration date Jun 14, 2006
Last updated in NPPES Jun 10, 2024
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1266155 | Medicaid | IA | - |
| 09750 | Other | IA | BLUECROSS/BLUESHIELDS |
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.
Frequently asked questions
How do I verify Gregory Lettman's NPI record?
Cross-check NPI 1114960226 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1114960226 active?
Yes, as of the latest NPPES snapshot, NPI 1114960226 is active (record last updated 2024-06-10).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-10.