Quick answers
- Where does Gregory D. Lettman see patients?
- Medicare's clinician data lists 1 practice location in Dubuque, IA. Call before your visit to confirm the address.
- What is Gregory D. Lettman's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does Gregory D. Lettman accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory D. Lettman accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Gregory D. Lettman?
- (563) 588-9200, as listed in official Medicare / NPI Registry data.
- What is Gregory D. Lettman's NPI number?
- 1114960226. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Gregory D. Lettman is enrolled with Medicare (CMS data updated 2026-10-02).
- 2095 John F Kennedy Rd, Suite 3Dubuque, IA 52002 (563) 588‑9200
Group practices
Medicare enrollment lists Gregory D. Lettman as a member of this group (CMS data updated 2026-10-02).
- Lettman Chiropractic Rehab Care3 clinicians in the group
Specialties
- Chiropracticprimary
Other chiropractors in Dubuque
Clinicians with the same Medicare primary specialty in Dubuque, IA — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Medical school | Palmer College Chiropractic - Davenport |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1114960226 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians