Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor
Dr. Donald Roy Korb, OD
Optometrist in Boston, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1851443493
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Registry record
Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 150817 | Other | - | HARVARD PILGRIM HEALTHCAR |
| 2019 | Other | - | VISION BENEFITS OF AMERIC |
| 2200579 | Other | - | UNITED HEALTHCARE |
| 2203336 | Other | - | AETNA HEALTHCARE |
| W15419 | Other | MA | BCBS MA |
| 042304182 | Other | - | VISION SERVICE PLAN |
| 0308714 | Medicaid | MA | - |
| 39436000 | Other | - | DAVIS VISION EYECARE |
| 712889 | Other | MA | TUFTS HEALTH PLAN |
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
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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-29.