SAMIR EZZELDIN WITTA (MD PHD) – Hematology & Oncology Physician, NPI 1013991678
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
246 HEMATOLOGY/ONCOLOGY in CO
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Provider Addresses for SAMIR EZZELDIN WITTA (MD PHD)
Red Rocks Medical Center, 400, Indiana Street, Golden, Jefferson County, Colorado, 80401, United States
SUITE 270
GOLDEN, CO 804015027
Phone: (303) 953-7400
Fax: (303) 953-7401
Type: Mailing
2555 S DOWNING ST
DENVER, CO 802105855
Phone: (303) 715-7030
Fax: (303) 715-7035
Type: Location
4747 S DOWNING ST
ENGLEWOOD, CO 801135917
Phone: (303) 870-3293
Fax: (303) 586-2228
Type: Mailing
3501 S CORONA ST STE 1
ENGLEWOOD, CO 801133907
Phone: (303) 999-6745
Fax: (303) 586-2228
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 45 Open Payments records for all available years, with a total value of $965.
Total Amount is formed as General ($965) + Research ($0) + Ownership ($0) = $965.
Last reported payment date: 2024-10-15 • Largest payer in this snapshot: Sirtex Medical Inc ($73).
Total Amount
$965
General + Research + Ownership
Payments
45
Total payment records
General Amount
$965
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-15
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Sirtex Medical Inc | $73 |
| Exelixis Inc. | $70 |
| PFIZER INC. | $65 |
| Merck Sharp & Dohme LLC | $48 |
| Karyopharm Therapeutics Inc. | $48 |
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: 2025-10-31
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20040827000362 | I | Hematology/Oncology | CO | TBD |
| I20240603003301 | I | Hematology/Oncology | NE | TBD |
| I20251031004232 | I | Medical Oncology | NM | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 384 | 179 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 254 | 113 | $0 |
| 99442 | Telephone medical discussion with physician, 11-20 minutes | 36 | 29 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 26 | 26 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 23 | 16 | $0 |
Insurance plans in this area (ZIP 80401)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| HEMATOLOGY/ONCOLOGY | CO | 96367 | Infusion into a vein for therapy prevention or diagnosis additional sequential infusion up to 1 hour | 479 | 42 |
| HEMATOLOGY/ONCOLOGY | CO | 96375 | Injection of different drug or substance into a vein for therapy, diagnosis, or prevention | 85 | 14 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CO | |
| H E M A T O L O G Y/ O N C O L O G Y | FL | |
| - | CO | |
| P O D I A T R Y | TX | |
| Certified Clinical Nurse Specialist (Cns) | CO | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | IL | |
| Physician Assistant | CO | |
| Physician Assistant | CO | |
| - | CO | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CO |
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