Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Jacob Jesus Castrejon, DC
Chiropractor in San Francisco, CA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1013679380
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Registry record
Entity type Individual (Type 1)
Name Dr. Jacob Jesus Castrejon
Credential DC
Sex Male
Practice address 2001 Union St Ste 440, San Francisco, CA, 94123
Phone (415) 236-1810
Enumeration date Oct 13, 2021
Last updated in NPPES Oct 13, 2021
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
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.
Frequently asked questions
What specialty is Jacob Castrejon?
Jacob Castrejon is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-13.