SAMER HASSAN (M.D.) – Hematology & Oncology Physician, NPI 1033421284
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
111 HEMATOLOGY/ONCOLOGY in OK
Provider Addresses for SAMER HASSAN (M.D.)
5300 N INDEPENDENCE AVE STE 280
OKLAHOMA CITY, OK 731125555
Phone: (405) 631-0919
Fax: (405) 636-0518
Type: Mailing
4301 S WESTERN AVE
OKLAHOMA CITY, OK 73109
Phone: (405) 631-0919
Fax: (405) 636-0518
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 38 Open Payments records for all available years, with a total value of $761.
Total Amount is formed as General ($761) + Research ($0) + Ownership ($0) = $761.
Last reported payment date: 2024-10-07 • Largest payer in this snapshot: PFIZER INC. ($111).
Total Amount
$761
General + Research + Ownership
Payments
38
Total payment records
General Amount
$761
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $111 |
| Novartis Pharmaceuticals Corporation | $103 |
| Celgene Corporation | $54 |
| Sumitomo Pharma America, Inc. | $48 |
| GENZYME CORPORATION | $40 |
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: 2018-09-17
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 |
|---|---|---|---|---|
| I20180917000856 | I | Hematology/Oncology | OK | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 819 | 219 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 409 | 96 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 197 | 159 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 80 | 80 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 58 | 56 | $0 |
Insurance plans in this area (ZIP 73112)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| P S Y C H I A T R Y | OK | |
| - | OK | |
| Physician Assistant | OK | |
| Orthopedic Surgery | OK | |
| - | OK | |
| Family Practice, General Surgery, Osteopathic Manipulative Medicine | OK | |
| - | OK | |
| H O S P I T A L I S T | OK | |
| - | OK | |
| Orthopedic Surgery | OK |
Reviews
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