Guy T. Alonso, MD
NPI 1700012432ActiveIndividual· Pediatrics, Pediatric Endocrinology· Aurora, CO
Pediatrics, Pediatric Endocrinology (MD) in Aurora, Colorado, licensed in CO and TX, with an NPI issued in June 2009. Enrolled in Medicare as practitioner - endocrinology. Genzyme Corporation reported $500.00 in payments in 2025, mostly grants.
Overview
| NPI | 1700012432 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 9, 2009 |
| Last updated in NPPES | Oct 21, 2026 |
| Certified by provider | Oct 21, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics, Pediatric Endocrinology Primary | 2080P0205X | DR.0052283 | CO |
| Pediatrics, Pediatric Endocrinology | 2080P0205X | N2372 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (CO) |
|---|
Industry payments (Open Payments)
- 2025$500.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $500.00 | 1 |
What the 2025 payments were for
- Grant$500.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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