Mark R. Klein, DO
NPI 1982686390ActiveIndividual· Family Medicine· Gainesville, TX
Family Medicine (DO) in Gainesville, Texas, licensed in TX, with an NPI issued in November 2005. Their prescriptions cost Medicare Part D more than their services did: $694,373 for 9,580 claims, against $77,690 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 12 companies reporting payments in 2025, $859.49 in all, mostly food and beverage. Lists Medical City Denton and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1982686390 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Nov 19, 2005 |
| Last updated in NPPES | Nov 21, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | K5586 | 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 - Family Practice (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 313 |
|---|---|
| Services billed | 1,161 across 47 procedure codes |
| Paid by Medicare | $77,690 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,580 · 19,540 30-day fills |
|---|---|
| Patients | 549 |
| Total drug cost | $694,373 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Family Practice |
Hospital affiliations
- Medical City DentonDenton, TX
- North Texas Medical CenterGainesville, TX
- Texoma Medical CenterDenison, TX
Other facilities
- Angels Care Home HealthHome health agency · Decatur, TX
- Choice Health at HomeHome health agency · Gainsville, TX
- First Texas Home HealthHome health agency · Whitesboro, TX
Industry payments (Open Payments)
- 2025$859.49 · 62 payments from 12 companies
- 2024$790.22 · 52 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $220.36 | 23 |
| Abbvie Inc. | $187.78 | 9 |
| Phathom Pharmaceuticals, Inc. | $91.40 | 9 |
| Lilly USA, LLC | $83.58 | 5 |
| Exact Sciences Corporation | $68.81 | 4 |
What the 2025 payments were for
- Food and Beverage$859.49 · 62 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 20 family medicine physicians in Gainesville · All family medicine physicians in Texas