Dr. David Calvin An, D.C.
Dr. David Calvin An is a Chiropractor provider (Chiropractor) practicing in Pleasant Hill, CA, registered in the NPPES registry with NPI 1356479679 since 2007. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1356479679 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. David Calvin An |
| Credential | D.C. |
| Sex | Male |
| Practice address | Pleasant Hill, CA, 94523 |
| Phone | 9252889696 |
| Enumeration date | 2007-02-28 |
| 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 |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | DC 26836 | CA |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Copy-ready billing details
Provider: David An, D.C. NPI: 1356479679 Taxonomy: 111N00000X (Chiropractor) Address: Pleasant Hill, CA, 94523
Verify this record
Cross-check NPI 1356479679 against the authoritative CMS record: view Dr. David Calvin An 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 1356479679 active?
How do I verify David An's NPI record?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.