Doctor profile · Federal record
Dr. Charles Geyer, MD
Hematology & Oncology Physician (CMS: Medical Oncology) · Internal Medicine Physician · Hematology & Oncology Physician · Medical Oncology Physician · Houston, TX
- NPI 1891795001
- Accepts Medicare
- MIPS 77.5 / 100 · 2023
- 46 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
6445 Main St Fl 24
Houston, TX 770301502
(713) 441-9948
fax (713) 441-8791
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- June 23, 2020
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State licenses (3)
- Texas #F6662 · Virginia #0101254387 · Pennsylvania #MD419017
- Medicaid (4)
- TX #202569406 · OH #2342334 · PA #0019157400001 · WV #3810011108
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1891795001. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$28,014
Transactions
13
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| F. Hoffmann-la Roche Ag | 8 | $25,581.25 | |
| TerSera Therapeutics LLC | 2 | $2,095.00 | |
| AstraZeneca Pharmaceuticals Lp | 2 | $208.66 | |
| Menarini Silicon Biosystems, INC. | 1 | $129.17 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
46
Patients
0
Total drug cost
$1,291
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prochlorperazine Maleate | Generic | 18 | 0 | $301 |
| Anastrozole | Generic | 15 | 0 | $558 |
| Tamoxifen Citrate | Generic | 13 | 0 | $432 |
Hospital affiliations
Frequently asked questions
What is Dr. Charles Geyer's medical specialty?
Dr. Charles Geyer practices Hematology & Oncology Physician in Houston, TX.
Where does Dr. Charles Geyer practice?
Dr. Charles Geyer practices at 6445 Main St Fl 24, Houston, TX 770301502. Office phone: 7134419948.
What is Dr. Charles Geyer's NPI?
Dr. Charles Geyer's National Provider Identifier (NPI) is 1891795001, issued by NPPES.
Does Dr. Charles Geyer accept Medicare assignment?
Yes. Dr. Charles Geyer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.