Mark A. Mazzare, M.D.
NPI 1891769709ActiveIndividual· Internal Medicine· Tyler, TX
Listed on the HHS-OIG exclusion list since July 2026 (1128a1). Internal Medicine (M.D.) in Tyler, Texas, licensed in TX, with an NPI issued in February 2006. Their prescriptions cost Medicare Part D more than their services did: $176,740 for 1,725 claims, against $2,117 paid for services in 2024.
Overview
| NPI | 1891769709 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 15, 2006 |
| Last updated in NPPES | Oct 24, 2023 |
| Certified by provider | Oct 24, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | K3331 | TX |
Exclusion screening
This NPI appears on the OIG exclusion list. Excluded parties cannot be paid by Medicare, Medicaid or other federal health care programs, directly or through an employer.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| NPI | Mark Alan Mazzare · Internal Medicine | 1128a1 | Jul 20, 2026 | Seagoville, TX |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Listed (NPI) | See above |
| 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 30 across 5 procedure codes |
| Paid by Medicare | $2,117 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,725 · 2,070 30-day fills |
|---|---|
| Patients | 90 |
| Total drug cost | $176,740 |
| Generic share | 85% 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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