Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Grant Michael Dobson, DC
Chiropractor in Sonoma, CA · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831459247
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Registry record
Entity type Individual (Type 1)
Name Dr. Grant Michael Dobson
Credential DC
Sex Male
Practice address 587 5th St W, Sonoma, CA, 95476
Phone (707) 935-1006
Fax (707) 935-7291
Enumeration date May 18, 2012
Last updated in NPPES Jul 10, 2018
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
Is NPI 1831459247 active?
Yes, as of the latest NPPES snapshot, NPI 1831459247 is active (record last updated 2018-07-10).
How do I verify Grant Dobson's NPI record?
Cross-check NPI 1831459247 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-10.