DR. GUSTAVO A FONSECA (MD) – Medical Oncology Physician, NPI 1063478766
Medical Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,007 HEMATOLOGY/ONCOLOGY in FL
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Provider Addresses for DR. GUSTAVO A FONSECA (MD)
PO BOX 102222
ATTN: CREDENTIALING
ATLANTA, GA 303682222
Phone: (239) 274-8200
Type: Mailing
521, North Lecanto Highway, Lecanto, Citrus County, Florida, 34461, United States
LECANTO, FL 344619187
Phone: (352) 746-0707
Fax: (352) 746-6333
Type: Location
Veronica S Shoemaker Blvd, Fort Myers, Lee County, Florida, 33916, United States
ATTN: CREDENTIALING
FORT MYERS, FL 339162216
Phone: (239) 274-8200
Fax: (239) 278-3350
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 267 Open Payments records for all available years, with a total value of $28,728.
Total Amount is formed as General ($28,728) + Research ($0) + Ownership ($0) = $28,728.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: GENZYME CORPORATION ($9,765).
Total Amount
$28,728
General + Research + Ownership
Payments
267
Total payment records
General Amount
$28,728
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GENZYME CORPORATION | $9,765 |
| Genmab U.S., Inc. | $7,089 |
| E.R. Squibb & Sons, L.L.C. | $3,797 |
| Daiichi Sankyo Inc. | $1,487 |
| Janssen Scientific Affairs, LLC | $1,350 |
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: 2007-11-10
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 |
|---|---|---|---|---|
| I20071110000027 | I | Hematology/Oncology | FL | 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) | 64,770 | 71 | $0 |
| J9271 | Injection, pembrolizumab, 1 mg | 21,200 | 20 | $0 |
| J9263 | Injection, oxaliplatin, 0.5 mg | 18,400 | 13 | $0 |
| Q5101 | Injection, filgrastim-sndz, biosimilar, (zarxio), 1 microgram | 16,080 | 18 | $0 |
| J9299 | Injection, nivolumab, 1 mg | 15,720 | 13 | $0 |
Insurance plans in this area (ZIP 30368)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| HEMATOLOGY/ONCOLOGY | FL | 78815 | Nuclear medicine study with CT imaging skull base to mid-thigh | 166 | 131 |
| HEMATOLOGY/ONCOLOGY | FL | 85610 | Blood test, clotting time | 154 | 47 |
| HEMATOLOGY/ONCOLOGY | FL | 96367 | Infusion into a vein for therapy prevention or diagnosis additional sequential infusion up to 1 hour | 701 | 115 |
| HEMATOLOGY/ONCOLOGY | FL | 96415 | Infusion of chemotherapy into a vein | 353 | 49 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Medical Oncology | FL | |
| Medical Oncology, Hematology/Oncology | FL | |
| H E M A T O L O G Y/ O N C O L O G Y | FL | |
| H E M A T O L O G Y/ O N C O L O G Y | FL | |
| Internal Medicine, Hematology/Oncology | FL | |
| - | GA | |
| Hematology/Oncology, Internal Medicine | GA | |
| H E M A T O L O G Y/ O N C O L O G Y | FL | |
| Hospice/Palliative Care, Internal Medicine | FL | |
| Medical Oncology, Hematology | CA |
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