Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory Fowler
Social Worker in Tustin, CA · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578019774
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Registry record
Entity type Individual (Type 1)
Name Gregory Fowler
Sex Male
Practice address 1 Hope Dr, Tustin, CA, 92782
Phone (174) 247-4300
Fax (714) 566-6470
Enumeration date Aug 28, 2016
Last updated in NPPES Aug 28, 2016
Taxonomy & licenses
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 is the NPI number for Gregory Fowler?
The National Provider Identifier (NPI) for Gregory Fowler is 1578019774, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gregory Fowler practice?
The practice location on file with NPPES is in Tustin, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Lisa Abdishoo Internal Medicine Physician · Tustin, CA NPI 1881776326 Robert Bader Internal Medicine Physician · Tustin, CA NPI 1225111610 Mark Wade Cardiovascular Disease Physician · Tustin, CA NPI 1558569921 Laurie Mazzei Medical Physician Assistant · Tustin, CA NPI 1093994659 Tameika Timmons Clinical Social Worker · Tustin, CA NPI 1326283557 Cindy Lee Family Medicine Physician · Tustin, CA NPI 1679712947 Kimberly Cook Family Nurse Practitioner · Tustin, CA NPI 1831423896 Erin Moffett Pediatric Nurse Practitioner · Tustin, CA NPI 1164756151
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-08-28.