IVAN JR. NAMIHAS (M.D.) – Radiation Oncology Physician, NPI 1285652495
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
677 RADIATION ONCOLOGY in CA
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Provider Addresses for IVAN JR. NAMIHAS (M.D.)
Loma Linda University Medical Center, 11234, Anderson Street, Loma Linda, San Bernardino County, California, 92354, United States
LOMA LINDA, CA 923542804
Phone: (909) 558-8311
Type: Location
PO BOX 30969
LOS ANGELES, CA 900300969
Phone: (909) 558-3014
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $50.
Total Amount is formed as General ($50) + Research ($0) + Ownership ($0) = $50.
Last reported payment date: 2023-05-02 • Largest payer in this snapshot: Boston Scientific Corporation ($50).
Total Amount
$50
General + Research + Ownership
Payments
1
Total payment records
General Amount
$50
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-05-02
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Boston Scientific Corporation | $50 |
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: 2008-12-09
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 |
|---|---|---|---|---|
| I20081209000185 | I | Radiation Oncology | CA | 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 |
|---|---|---|---|---|
| G6002 | Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 729 | 43 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 228 | 48 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 195 | 40 | $0 |
| 77300 | Calculation of radiation therapy dose | 171 | 40 | $0 |
| 77290 | Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved | 64 | 30 | $0 |
Insurance plans in this area (ZIP 92354)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| - | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| Physician Assistant | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Critical Care (Intensivists), General Surgery | CA | |
| Surgical Oncology, General Surgery | IL | |
| A N E S T H E S I O L O G Y | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA |
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