Quick answers
- Where does Greg A. Zweiacher see patients?
- Medicare's clinician data lists 2 practice locations, including Smyrna, DE. Call before your visit to confirm the address.
- What is Greg A. Zweiacher's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does Greg A. Zweiacher accept Medicare assignment?
- Yes. Medicare's clinician data says Greg A. Zweiacher 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 Greg A. Zweiacher?
- (302) 653-1188, as listed in official Medicare / NPI Registry data.
- What is Greg A. Zweiacher's NPI number?
- 1801873385. 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 Greg A. Zweiacher is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 S Main St, Suite 204Smyrna, DE 19977
- 100 S Main St, Suite 218Smyrna, DE 19977 (302) 653‑1188
Specialties
- Chiropracticprimary
Other chiropractors in Smyrna
Clinicians with the same Medicare primary specialty in Smyrna, DE — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| Medical school | Palmer College Chiropractic - Davenport |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801873385 |
| 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