DR. CHARLES E JR. GEYER (MD) – Hematology & Oncology Physician, NPI 1891795001
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
770 MEDICAL ONCOLOGY in TX
Provider Addresses for DR. CHARLES E JR. GEYER (MD)
6445 MAIN ST FL 24
HOUSTON, TX 770301502
Phone: (713) 441-9948
Fax: (713) 441-8791
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 32 Open Payments records for all available years, with a total value of $44,066.
Total Amount is formed as General ($35,674) + Research ($8,392) + Ownership ($0) = $44,066.
Last reported payment date: 2024-12-31 • Largest payer in this snapshot: F. Hoffmann-La Roche AG ($36,291).
Total Amount
$44,066
General + Research + Ownership
Payments
32
Total payment records
General Amount
$35,674
General payments
Research Amount
$8,392
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-31
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| F. Hoffmann-La Roche AG | $36,291 |
| Exact Sciences Corporation | $5,198 |
| TerSera Therapeutics LLC | $2,095 |
| AstraZeneca Pharmaceuticals LP | $329 |
| Menarini Silicon Biosystems, Inc. | $129 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2006-02-01
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20060201000472 | I | Medical Oncology | PA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 77030)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Anesthesiology, Critical Care (Intensivists) | PA | |
| - | PA | |
| - | PA | |
| Cardiac Surgery, General Surgery | PA | |
| Nurse Practitioner | PA | |
| Nurse Practitioner | PA | |
| - | PA | |
| - | MD | |
| O B S T E T R I C S/ G Y N E C O L O G Y | PA | |
| - | SC |
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