ZACHARY SCOTT MAYO (MD) – Radiation Oncology Physician, NPI 1639632839
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
18 RADIATION ONCOLOGY in SD
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Provider Addresses for ZACHARY SCOTT MAYO (MD)
930, 46th Street, Sioux City, Woodbury County, Iowa, 51104, United States
SIOUX CITY, IA 511041438
Phone: (712) 389-6301
Type: Mailing
1400, West 22nd Street, Sioux Falls, Minnehaha County, South Dakota, 57105, United States
SIOUX FALLS, SD 571051554
Phone: (605) 357-1386
Type: Location
101 PHYSICIANS WAY STE 111
LEBANON, TN 370908131
Phone: (615) 235-8700
Fax: (615) 550-3055
Type: Location
2004 HAYES ST STE 800
NASHVILLE, TN 372032659
Phone: (615) 329-0570
Fax: (615) 329-0579
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 6 Open Payments records for all available years, with a total value of $572.
Total Amount is formed as General ($572) + Research ($0) + Ownership ($0) = $572.
Last reported payment date: 2024-04-25 • Largest payer in this snapshot: Novocure Inc. ($449).
Total Amount
$572
General + Research + Ownership
Payments
6
Total payment records
General Amount
$572
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-25
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Novocure Inc. | $449 |
| EMD Serono, Inc. | $107 |
| Boston Scientific Corporation | $16 |
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: 2024-11-29
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 |
|---|---|---|---|---|
| I20241129000006 | I | Radiation Oncology | TN | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 51104)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Radiation Oncology | TN | |
| Radiation Oncology | TN |
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