Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Gregory Rosenthal, M.D.
Retina Specialist (Ophthalmology) Physician in Maumee, OH · enumerated 2006 · practices at Alliance Retina.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1710959549
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 024591 | Other | OH | ONE HEALTH PLAN |
| 0749300 | Medicaid | OH | - |
| 311550308019 | Other | OH | CIGNA |
| 4121872 | Other | OH | AETNA |
| 00642 | Other | OH | PARAMOUNT |
| 0800785 | Other | OH | UNITED HEALTHCARE |
| 000000121699 | Other | OH | ANTHEM |
| 602258 | Other | OH | FAMILY HEALTH PLAN |
| P62103 | Other | OH | BLUE CARE |
| 4110735 | Medicaid | MI | - |
| 1183130001 | Other | OH | ADMINASTAR |
| OC06130 | Other | OH | NATIONWIDE HEALTH PLANS |
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.
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-25.