Charles E. Geyer, MD
Hematology & Oncology Physician · Houston, TX
Charles E. Geyer, MD is a hematology & oncology physician with a practice address in Houston, Texas, and NPI 1891795001, issued on Jul 29, 2005. Check the license (Texas F6662, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Charles E. Geyer
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- F6662 TX
MD419017 PA
0101254387 VA
Self-reported in NPPES; status is on the state search - Practice location
- 6445 Main St FL 24, Houston, TX 77030
- Phone
- (713) 441-9948
- Enumerated
- Jul 29, 2005
- Record last updated
- Jun 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (713) 441-8791
- Medicaid IDs
- 202569406 TX
2342334 OH
0019157400001 PA
3810011108 WV - Medicare enrollment
- Enrolled (PECOS I20060201000472); accepts Medicare assignment
- Medical or professional school
- Texas Tech University Health Science Center School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 922 in Texas → Look up another NPI →
Also registered at 6445 Main St FL 24
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ethan Burns, MDHematology & Oncology Physician1962933705
- Stephanie Canales, APRN, AGNP-BCGeriatric Medicine (Family Medicine) Physician1639916851
- Jian Guan, M.D.Hematology & Oncology Physician1053799304
- Ryan Kieser, M.D.Hematology & Oncology Physician1033568795
- Savannah Prantil, AGACNP-BCAcute Care Nurse Practitioner1790391746
- Akshjot Puri, MDHematology & Oncology Physician1770981490
Verify Charles E. Geyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license F6662Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
94 Medicare Part D claims for 18 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole27 claims
- Tamoxifen Citrate14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $28,014.08
13 payments; by number, the most common kind was food and beverage; the largest payer was F. Hoffmann-La Roche AG. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- University OF Pittsburgh PhysiciansPittsburgh, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles E. Geyer among 922 hematology & oncology physician records in Texas
Charles E. Geyer, MD is one of 922 hematology & oncology physician records with a practice address in Texas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1980 · median 2004 among the 691 with a school on file
- Record last updated2020 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Texas
There are 922 hematology & oncology physician records in Texas.
All 922 in Texas → Every provider in Houston → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ana AparicioHouston, TX 770301720033657
- Ahmed Eid, M.D.Houston, TX 770301649227406
- Susan Escudier, M.D.Houston, TX 770301831138221
- Lawrence Foote, M.D.Houston, TX 770301295777456
- Linus Ho, M.D., PH.D.Houston, TX 770301376525980
- Kevin Hude, M.D.Houston, TX 770301114996303
- Charles Manner, M. D.Houston, TX 770301760443782
- Thein Oo, M.D.Houston, TX 770301215925250
Common questions
What is Charles E. Geyer, MD's NPI number?
Charles E. Geyer, MD's National Provider Identifier (NPI) is 1891795001, issued on Jul 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Charles E. Geyer, MD located?
The NPPES record lists a practice address at 6445 Main St FL 24, Houston, TX, 77030. Phone: (713) 441-9948. Providers update this record themselves, so call before visiting.
How can I verify Charles E. Geyer, MD's license?
NPPES lists Texas license number F6662, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Charles E. Geyer, MD prescribe under Medicare Part D?
In 2024, Charles E. Geyer, MD had 94 Medicare Part D claims for 18 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Charles E. Geyer, MD's MIPS final score?
The 2023 MIPS final score is 77.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.