Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Leonard Bertoli, OD
Optometrist in Malden, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477504538
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Registry record
Entity type Individual (Type 1)
Name Dr. Leonard Bertoli
Credential OD
Sex Male
Practice address 1 Highland Ave, #3b Mass Optometric Associates, P.C., Malden, MA, 02148
Phone (781) 321-9039
Fax (781) 321-8611
Enumeration date May 13, 2006
Last updated in NPPES Sep 20, 2007
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0393738 | Medicaid | MA | - |
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
How do I verify Leonard Bertoli's NPI record?
Cross-check NPI 1477504538 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1477504538 active?
Yes, as of the latest NPPES snapshot, NPI 1477504538 is active (record last updated 2007-09-20).
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-20.