Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum
Robert J Becker MD Ltd
Endocrinology, Diabetes & Metabolism Physician in La Grange Highlands, IL · enumerated 2007 · authorized official Jonathan Becker, President.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609994987
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Registry record
Taxonomy & classification
Authorized official
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 036066423 | Other | IL | J. BECKER MD IL LICENSE # |
| 1992721898 | Other | IL | RICHARD BERTENSHAW MD NPI |
| 1609994987 | Other | IL | GROUP NPI |
| 21607143 | Other | IL | GROUP BLUE CROSS ID # |
| C30167 | Other | IL | RAILROAD MEDICARE GROUP PTAN |
| 036074851 | Other | IL | R BERTENSHAW IL LICENSE # |
| 1821014721 | Other | IL | JONATHAN BECKER MD NPI# |
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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Providers at this address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-13.