Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John A May, OD
Optometrist in Thornton, CO · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1154351732
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Registry record
Entity type Individual (Type 1)
Name John A May
Credential OD
Sex Male
Practice address 10001 N Washington St, Thornton, CO, 80229
Phone (303) 451-8075
Fax (303) 457-9859
Enumeration date Jul 3, 2006
Last updated in NPPES Oct 11, 2007
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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 is the NPI number for John May?
The National Provider Identifier (NPI) for John May is 1154351732, a Type 1 (individual) record in the CMS NPPES registry.
Where does John May practice?
The practice location on file with NPPES is in Thornton, CO. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → John Puchalski General Practice Dentistry · Thornton, CO NPI 1407829468 Stephen Humphrey General Practice Dentistry · Thornton, CO NPI 1689647539 Sam Anouna Gastroenterology Physician · Thornton, CO NPI 1639119365 Shazad Rana Gastroenterology Physician · Thornton, CO NPI 1285670323 Paul Deneault Gastroenterology Physician · Thornton, CO NPI 1346276177 Ronald Faulkner Optometrist · Thornton, CO NPI 1215965835 Gareth Weiner Gastroenterology Physician · Thornton, CO NPI 1003845249 Lisa Brill Optometrist · Thornton, CO NPI 1063443323
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-11.