DR. JOHN SARANTOPOULOS (M.D.) – Medical Oncology Physician, NPI 1861495343
Medical Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,297 INTERNAL MEDICINE in TX
Provider Addresses for DR. JOHN SARANTOPOULOS (M.D.)
Floyd Curl Drive, San Antonio, Bexar County, Texas, 78240, United States
MC 7977
SAN ANTONIO, TX 782293901
Phone: (210) 257-1400
Fax: (210) 257-1428
Type: Mailing
7979 WURZBACH RD
SAN ANTONIO, TX 782294427
Phone: (210) 450-1000
Fax: (210) 450-1150
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 354 Open Payments records for all available years, with a total value of $280,255.
Total Amount is formed as General ($280,255) + Research ($0) + Ownership ($0) = $280,255.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: Exelixis Inc. ($90,336).
Total Amount
$280,255
General + Research + Ownership
Payments
354
Total payment records
General Amount
$280,255
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Exelixis Inc. | $90,336 |
| PFIZER INC. | $81,134 |
| Regeneron Healthcare Solutions, Inc. | $61,824 |
| Astellas Pharma US Inc | $29,886 |
| Seagen Inc. | $12,716 |
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: 2004-10-21
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 |
|---|---|---|---|---|
| I20041021000895 | I | Medical Oncology | TX | 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 |
|---|---|---|---|---|
| J9263 | Injection, oxaliplatin, 0.5 mg | 4,430 | 12 | $0 |
| J9271 | Injection, pembrolizumab, 1 mg | 3,600 | 14 | $0 |
| J1453 | Injection, fosaprepitant, 1 mg | 3,000 | 15 | $0 |
| J2405 | Injection, ondansetron hydrochloride, per 1 mg | 768 | 36 | $0 |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | 689 | 41 | $0 |
Insurance plans in this area (ZIP 78229)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| - | TX | |
| - | TX | |
| Internal Medicine, Hospitalist | TX | |
| - | TX | |
| - | TX | |
| Internal Medicine, Hematology/Oncology | TX | |
| - | TX | |
| Hematology/Oncology, Medical Oncology | TX | |
| - | TX |
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