Gregory Todd Siebert, DC
Gregory Todd Siebert is a Chiropractor provider (Chiropractor) practicing in San Clemente, CA, registered in the NPPES registry with NPI 1548366420 since 2006. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1548366420 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Gregory Todd Siebert |
| Credential | DC |
| Sex | Male |
| Practice address | 1300 AVENIDA VISTA HERMOSA, San Clemente, CA, 92673 |
| Phone | 9493660070 |
| Fax | 9494924948 |
| Enumeration date | 2006-09-16 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | DC23370 | CA |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Copy-ready billing details
Provider: Gregory Siebert, DC NPI: 1548366420 Taxonomy: 111N00000X (Chiropractor) Address: 1300 AVENIDA VISTA HERMOSA, San Clemente, CA, 92673
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1336186493 | Christopher Carlin | Individual | Procedural Dermatology Physician | San Clemente, CA |
| 1679671358 | Lauren Dwinell | Individual | Pediatrics Physician | San Clemente, CA |
| 1508953134 | Brent Palman | Individual | Medical Physician Assistant | San Clemente, CA |
| 1982764858 | Paulina Avendano | Individual | Pediatrics Physician | San Clemente, CA |
| 1811030117 | Eva Gentile | Individual | Family Medicine Physician | San Clemente, CA |
| 1225171531 | John Gentile | Individual | Family Medicine Physician | San Clemente, CA |
| 1265646699 | Comprehensive Medical Services | Organization | Multi-Specialty Clinic/Center | San Clemente, CA |
| 1083822639 | South County Urgent Care Medical Corporation | Organization | Emergency Medicine Physician | San Clemente, CA |
Verify this record
Cross-check NPI 1548366420 against the authoritative CMS record: view Gregory Todd Siebert 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.