Christopher Robert Flowers, M.D.
NPI 1174630503ActiveIndividual· Internal Medicine, Hematology & Oncology· Houston, TX
Internal Medicine, Hematology & Oncology (M.D.) in Houston, Texas, trained at Stanford University School of Medicine (class of 1997). Mostly services rather than prescriptions: Medicare paid $17,767 for 41 patients in 2024, with only 31 Part D claims. Genentech, Inc. was the largest of 4 companies reporting payments in 2025, $6,979 in all, mostly consulting fees.
Overview
| NPI | 1174630503 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 23, 2006 |
| Last updated in NPPES | Sep 25, 2020 |
| Certified by provider | Sep 25, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | S8306 | TX |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 53523 | 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 - Hematology/Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 41 |
|---|---|
| Services billed | 189 across 9 procedure codes |
| Paid by Medicare | $17,767 |
Part D prescriptions in 2024
| Prescriptions (claims) | 31 · 34 30-day fills |
|---|---|
| Total drug cost | $4,599 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | Stanford University School of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Hematopoietic Cell Transplantation And Cellular Therapy, Medical Oncology |
Medical group
- Physicians Referral ServiceHouston, TX · 2,765 clinicians
Industry payments (Open Payments)
- 2025$6,979 · 7 payments from 4 companies
- 2024$77,174 · 17 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genentech, Inc. | $6,539 | 2 |
| Stryker Corporation | $173.25 | 3 |
| Beone Medicines USA, Inc. | $167.53 | 1 |
| Genentech USA, Inc. | $99.04 | 1 |
What the 2025 payments were for
- Consulting Fee$6,525 · 1 payment
- Food and Beverage$453.97 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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