Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marina Grinspan, OD
Optometrist in Malden, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831105691
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Registry record
Entity type Individual (Type 1)
Name Dr. Marina Grinspan
Credential OD
Sex Female
Practice address 1 Highland Ave # 3b, Malden, MA, 02148
Phone (781) 321-9039
Enumeration date Aug 1, 2006
Last updated in NPPES May 20, 2019
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
Is NPI 1831105691 active?
Yes, as of the latest NPPES snapshot, NPI 1831105691 is active (record last updated 2019-05-20).
How do I verify Marina Grinspan's NPI record?
Cross-check NPI 1831105691 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 2019-05-20.