Calixto Jose Cornavaca Diaz, M.D.
NPI 1326381625ActiveIndividual· General Practice· Buford, GA
General Practice (M.D.) with Calixto J Cornavaca Diaz MD LLC, practicing in Buford, Georgia. Their prescriptions cost Medicare Part D more than their services did: $155,792 for 2,301 claims, against $10,173 paid for services in 2024. Novo Nordisk Inc was the largest of 3 companies reporting payments in 2025, $216.80 in all, mostly food and beverage.
Overview
| NPI | 1326381625 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 4, 2013 |
| Last updated in NPPES | Mar 15, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | 74951 | GA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Practice (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 39 |
|---|---|
| Services billed | 182 across 12 procedure codes |
| Paid by Medicare | $10,173 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,301 · 4,462 30-day fills |
|---|---|
| Patients | 126 |
| Total drug cost | $155,792 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | General Practice |
Medical group
- Calixto J Cornavaca Diaz MD LLCGainesville, GA · 2 clinicians
Industry payments (Open Payments)
- 2025$216.80 · 9 payments from 3 companies
- 2024$48.97 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $184.14 | 7 |
| Xeris Pharmaceuticals, Inc. | $22.46 | 1 |
| Phathom Pharmaceuticals, Inc. | $10.20 | 1 |
What the 2025 payments were for
- Food and Beverage$216.80 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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