Dr. Douglas M. Gregerson, D.C.
Dr. Douglas M. Gregerson is a Radiology Chiropractor provider (Chiropractor) practicing in Geneva, IL, registered in the NPPES registry with NPI 1659355139 since 2005. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1659355139 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Douglas M. Gregerson |
| Credential | D.C. |
| Sex | Male |
| Practice address | 0 S. 630 PRESTON CR, Geneva, IL, 60134 |
| Phone | 6308450862 |
| Fax | 6305781018 |
| Enumeration date | 2005-11-30 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111NR0200X | Radiology Chiropractor | Primary | — | IL |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Copy-ready billing details
Provider: Douglas Gregerson, D.C. NPI: 1659355139 Taxonomy: 111NR0200X (Radiology Chiropractor) Address: 0 S. 630 PRESTON CR, Geneva, IL, 60134
Verify this record
Cross-check NPI 1659355139 against the authoritative CMS record: view Dr. Douglas M. Gregerson on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
Is NPI 1659355139 active?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.