JOHN WINDSOR ESTHER (M.D.) – Hematology & Oncology Physician, NPI 1174056121
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
91 HEMATOLOGY/ONCOLOGY in UT
Provider Addresses for JOHN WINDSOR ESTHER (M.D.)
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 727625328
Phone: (479) 581-7170
Fax: (479) 587-1366
Type: Mailing
30 N 1900 E RM 4C116
SALT LAKE CITY, UT 841320002
Phone: (801) 581-2121
Type: Mailing
UNIVERSITY OF UTAH HOSPITAL 50 N MEDICAL DR
SALT LAKE CITY, UT 841320001
Phone: (801) 581-7076
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 77 Open Payments records for all available years, with a total value of $5,896.
Total Amount is formed as General ($5,896) + Research ($0) + Ownership ($0) = $5,896.
Last reported payment date: 2024-12-09 • Largest payer in this snapshot: PharmaEssentia USA Corporation ($4,600).
Total Amount
$5,896
General + Research + Ownership
Payments
77
Total payment records
General Amount
$5,896
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PharmaEssentia USA Corporation | $4,600 |
| Janssen Biotech, Inc. | $208 |
| Daiichi Sankyo Inc. | $131 |
| Regeneron Healthcare Solutions, Inc. | $105 |
| AstraZeneca Pharmaceuticals LP | $85 |
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: 2023-07-03
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 |
|---|---|---|---|---|
| I20230703001332 | I | Hematology/Oncology | AR | 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 |
|---|---|---|---|---|
| Q0138 | Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) | 14,280 | 27 | $0 |
| J9299 | Injection, nivolumab, 1 mg | 6,000 | 13 | $0 |
| J9271 | Injection, pembrolizumab, 1 mg | 2,600 | 11 | $0 |
| J1561 | Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg | 2,452 | 21 | $0 |
| Q9967 | Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 1,670 | 17 | $0 |
Insurance plans in this area (ZIP 72762)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | AR | |
| - | AR | |
| Nurse Practitioner | AR | |
| Medical Oncology, Hematology | AR | |
| Nurse Practitioner | AR | |
| Hospice/Palliative Care | AR | |
| Nurse Practitioner | AR | |
| Radiation Oncology | AR | |
| H E M A T O L O G Y/ O N C O L O G Y | AR | |
| Physician Assistant | AR |
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