Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Adam Gasparevich, D.C.
Chiropractor in Fontana, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508889841
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name John Adam Gasparevich
Credential D.C.
Sex Male
Practice address 9673 Sierra Ave, Suite A, Fontana, CA, 92335
Phone (909) 829-8722
Fax (909) 829-4402
Enumeration date Jul 26, 2006
Last updated in NPPES Jul 21, 2022
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 1508889841 active?
Yes, as of the latest NPPES snapshot, NPI 1508889841 is active (record last updated 2022-07-21).
How do I verify John Gasparevich's NPI record?
Cross-check NPI 1508889841 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 → Inland Empire Spine and Rehabilitation Medical Center Chiropractor · Fontana, CA NPI 1548216112 Magdy R. Soliman MD Family Medicine Physician · Fontana, CA NPI 1346492931 Robert Strohbach Chiropractor · Fontana, CA NPI 1508003682 Claudia Cortes DDS Inc General Practice Dentistry · Fontana, CA NPI 1649414871 Dr Soliman MD Medical Clinic Family Medicine Physician · Fontana, CA NPI 1588922454 Inland Empire Spine Chiropractor · Fontana, CA NPI 1205284494
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.