Thomas Guerrero-Garcia, M.D.
NPI 1689939993ActiveIndividual· Internal Medicine, Hematology & Oncology· The Woodlands, TX
Internal Medicine, Hematology & Oncology (M.D.) with Tmh Physician Associates PLLC and 1 other group, practicing in The Woodlands, Texas. Their prescriptions cost Medicare Part D more than their services did: $2,262,441 for 1,015 claims, against $74,313 paid for services in 2024. Tempus Ai, Inc was the largest of 21 companies reporting payments in 2025, $1,046 in all, mostly food and beverage. Lists Houston Methodist Cypress Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1689939993 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 12, 2012 |
| Last updated in NPPES | Jan 19, 2026 |
| Certified by provider | Jan 19, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | V6591 | TX |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 2019005326 | MO |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 259137 | MA |
| Internal Medicine | 207R00000X | LP02565 | RI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 275 |
|---|---|
| Services billed | 787 across 13 procedure codes |
| Paid by Medicare | $74,313 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,015 · 1,181 30-day fills |
|---|---|
| Patients | 134 |
| Total drug cost | $2,262,441 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Tmh Physician Associates PLLCKaty, TX · 1,690 clinicians
- Houston Methodist Specialty PhysiciansHouston, TX · 1,528 clinicians
Hospital affiliations
- Houston Methodist Cypress HospitalCypress, TX
- Houston Methodist the Woodlands HospitalThe Woodlands, TX
- Houston Methodist Willowbrook HospitalHouston, TX
- Phelps County Regional Medical CenterRolla, MO
Industry payments (Open Payments)
- 2025$1,046 · 35 payments from 21 companies
- 2024$790.36 · 40 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tempus Ai, Inc | $276.48 | 4 |
| Stryker Corporation | $144.18 | 1 |
| Merck Sharp & Dohme LLC | $81.58 | 4 |
| Pfizer Inc. | $73.17 | 3 |
| Jazz Pharmaceuticals Inc. | $53.83 | 2 |
What the 2025 payments were for
- Food and Beverage$1,046 · 35 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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