GREGORY A MAGGASS (MD) – Radiation Oncology Physician, NPI 1124093539
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
156 RADIATION ONCOLOGY in AZ
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Provider Addresses for GREGORY A MAGGASS (MD)
Los Angeles, Ofir, Eilat, Beersheba Subdistrict, South District, 8804625, Israel
LOS ANGELES, CA 900783106
Phone: (480) 922-4600
Fax: (480) 922-5231
Type: Mailing
East del Camino Drive, El Paseo, Scottsdale, Maricopa County, Arizona, 85258, United States
STE 200
SCOTTSDALE, AZ 852582351
Phone: (480) 922-4600
Fax: (480) 922-5231
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 146 Open Payments records for all available years, with a total value of $4,121.
Total Amount is formed as General ($4,121) + Research ($0) + Ownership ($0) = $4,121.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: Progenics Pharmaceuticals, Inc. ($403).
Total Amount
$4,121
General + Research + Ownership
Payments
146
Total payment records
General Amount
$4,121
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Progenics Pharmaceuticals, Inc. | $403 |
| PFIZER INC. | $296 |
| VisionRT, Inc. | $221 |
| Novartis Pharmaceuticals Corporation | $216 |
| Siemens Medical Solutions USA, Inc. | $203 |
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: 2009-01-08
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 |
|---|---|---|---|---|
| I20090108000695 | I | Radiation Oncology | AZ | 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 |
|---|---|---|---|---|
| A9607 | Lutetium lu 177 vipivotide tetraxetan, therapeutic, 1 millicurie | 17,902 | 34 | $0 |
| 77014 | Ct guidance for insertion of radiation therapy fields | 747 | 123 | $0 |
| G6015 | Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session | 707 | 109 | $0 |
| 77300 | Calculation of radiation therapy dose | 318 | 103 | $0 |
| 77336 | Continuing radiation therapy consultation per week | 283 | 85 | $0 |
Insurance plans in this area (ZIP 90078)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Radiation Oncology | AZ | |
| - | AZ | |
| - | AZ | |
| Physician Assistant | AZ | |
| Radiation Oncology | GA | |
| - | AZ | |
| Radiation Oncology | AZ | |
| U R O L O G Y | AZ | |
| Radiation Oncology | AZ | |
| - | AZ |
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