Tarcisio Calibo Diaz, MD
NPI 1346379583ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Corona, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Corona, California, trained at Perelman School of Med at the University of Pennsylvania (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $2,677,631 for 5,852 claims, against $61,053 paid for services in 2024. Amgen Inc. was the largest of 23 companies reporting payments in 2025, $2,145 in all, mostly food and beverage.
Overview
| NPI | 1346379583 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 5, 2007 |
| Last updated in NPPES | Jan 13, 2025 |
| Certified by provider | Jan 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A46295 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 123 |
|---|---|
| Services billed | 620 across 8 procedure codes |
| Paid by Medicare | $61,053 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,852 · 12,227 30-day fills |
|---|---|
| Patients | 373 |
| Total drug cost | $2,677,631 |
| Generic share | 61% of claims |
Education and affiliations
| Medical school | Perelman School of Med at the University of Pennsylvania |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
Other facilities
- Kinder Care Home Health, Inc.Home health agency · Wildomar, CA
- Monarch Hospice Care, IncHospice · Walnut, CA
Industry payments (Open Payments)
- 2025$2,145 · 111 payments from 23 companies
- 2024$1,904 · 100 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $373.05 | 20 |
| Abbott Laboratories | $274.87 | 13 |
| Recordati_rare_diseases_inc. | $259.38 | 15 |
| Corcept Therapeutics | $202.85 | 12 |
| Xeris Pharmaceuticals, Inc. | $185.38 | 13 |
What the 2025 payments were for
- Food and Beverage$2,145 · 111 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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