DR. GREGORY RICCARDO VLACICH (MD) – Radiation Oncology Physician, NPI 1073839148
Radiation Oncology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
158 RADIATION ONCOLOGY in MO
Provider Addresses for DR. GREGORY RICCARDO VLACICH (MD)
PO BOX 7412011
CHICAGO, IL 606742011
Phone: (314) 747-7236
Fax: (314) 362-8099
Type: Mailing
4921 PARKVIEW PL
DEPT RADIATION ONCOLOGY, LL
SAINT LOUIS, MO 631101032
Phone: (314) 747-7236
Fax: (314) 362-8099
Type: Location
660 S EUCLID AVE
CB 8224
SAINT LOUIS, MO 631101010
Phone: (314) 747-7236
Fax: (314) 747-9557
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $94.
Total Amount is formed as General ($94) + Research ($0) + Ownership ($0) = $94.
Last reported payment date: 2024-07-25 • Largest payer in this snapshot: Sumitomo Pharma America, Inc. ($94).
Total Amount
$94
General + Research + Ownership
Payments
4
Total payment records
General Amount
$94
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-25
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Sumitomo Pharma America, Inc. | $94 |
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: 2016-07-06
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20160318000771 | I | Radiation Oncology | MO | TBD |
| I20160706000474 | I | Radiation Oncology | IL | 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 |
|---|---|---|---|---|
| 77014 | Ct guidance for insertion of radiation therapy fields | 638 | 64 | $0 |
| 77300 | Calculation of radiation therapy dose | 425 | 74 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 179 | 58 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 98 | 61 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 76 | 44 | $0 |
Insurance plans in this area (ZIP 60674)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MO | |
| - | MO | |
| - | FL | |
| - | MO | |
| Diagnostic Radiology | IL | |
| Rheumatology, Internal Medicine | MO | |
| - | IL | |
| - | MO | |
| - | MO | |
| - | MO |
Reviews
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