Dr. John Christopher Larson, DC
Dr. John Christopher Larson is a Occupational Health Chiropractor provider (Chiropractor) practicing in Rancho Cucamonga, CA, registered in the NPPES registry with NPI 1174537757 since 2006. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1174537757 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. John Christopher Larson |
| Credential | DC |
| Sex | Male |
| Practice address | Rancho Cucamonga, CA, 91701 |
| Phone | 9094833530 |
| Fax | 9094833423 |
| Enumeration date | 2006-07-28 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111NX0100X | Occupational Health Chiropractor | Primary | DC26758 | CA |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Copy-ready billing details
Provider: John Larson, DC NPI: 1174537757 Taxonomy: 111NX0100X (Occupational Health Chiropractor) Address: Rancho Cucamonga, CA, 91701
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1700903713 | Yuen-Siang Hung | Organization | Prosthodontics | Rancho Cucamonga, CA |
| 1669263307 | Wesley Hung DDS Inc | Organization | General Practice Dentistry | Rancho Cucamonga, CA |
Verify this record
Cross-check NPI 1174537757 against the authoritative CMS record: view Dr. John Christopher Larson 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 1174537757 active?
How do I verify John Larson's NPI record?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.