Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Robert S Greenbaum, OD
Optometrist in Lagrangeville, NY · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750387973
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Registry record
Entity type Individual (Type 1)
Name Dr. Robert S Greenbaum
Credential OD
Sex Male
Practice address 1110 Route 55 Ste 105, Lagrangeville, NY, 12540
Phone (845) 473-0220
Fax (845) 473-0140
Enumeration date Jun 22, 2005
Last updated in NPPES Dec 13, 2024
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 |
|---|---|---|---|
| 597014 | Other | NY | MVP HEALTH PLAN |
| 0007187044 | Other | NY | AETNA |
| 10032470 | Other | NY | CDPHP |
| P2790040 | Other | - | OXFORD HEALTH INSURANCE |
| 02144998 | Medicaid | NY | - |
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 1750387973 active?
Yes, as of the latest NPPES snapshot, NPI 1750387973 is active (record last updated 2024-12-13).
How do I verify Robert Greenbaum's NPI record?
Cross-check NPI 1750387973 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-13.