Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ramon Ray Gregorio Rayel, MD
Cardiovascular Disease Physician in Green Bay, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1407828676
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 5206090 | Medicaid | MI | - |
| 0220121 | Other | MI | BCBS OF MI |
| 1042616 | Other | - | PREFERRED ONE |
| 110B210270 | Other | MI | BCBS |
| 4657176 | Medicaid | MI | - |
| P00188872 | Other | MI | RAILROAD MEDICARE |
| 32560500 | Medicaid | WI | - |
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 2016-04-28.