Karen C. Diaz, MD
NPI 1023125010ActiveIndividual· Obstetrics & Gynecology, Obstetrics· San Antonio, TX
Obstetrics & Gynecology, Obstetrics (MD) in San Antonio, Texas, licensed in TX, with an NPI issued in August 2006. Their prescriptions cost Medicare Part D more than their services did: $19,824 for 93 claims, against $1,287 paid for services in 2024.
Overview
| NPI | 1023125010 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 24, 2006 |
| Last updated in NPPES | Aug 23, 2024 |
| Certified by provider | Aug 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Obstetrics Primary | 207VX0000X | G4981 | TX |
| Obstetrics & Gynecology | 207V00000X | G4981 | 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 - Obstetrics/Gynecology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 16 |
|---|---|
| Services billed | 28 across 10 procedure codes |
| Paid by Medicare | $1,287 |
Part D prescriptions in 2024
| Prescriptions (claims) | 93 · 178 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $19,824 |
| Generic share | 73% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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