Gustavo Fonseca, MD
NPI 1063478766 · Medical Oncology Physician · Lecanto, FL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gustavo Fonseca, MD is a Medical Oncology Physician provider in Lecanto, FL (NPI 1063478766).
Provider details
- NPI number
- 1063478766
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME57124 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
19,143 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Injection, Fosaprepitant (focinvez), 1 MgJ1434 | 7,500 | $3 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 2,678 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 2,661 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,708 | $124 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 872 | $14 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 670 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lenalidomidebrand: Revlimid | 97 | 14 |
| Letrozole | 71 | 24 |
| Tamoxifen Citrate | 58 | 16 |
| Oxycodone Hcl | 57 | 26 |
| Palbociclibbrand: Ibrance | 52 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 42 | 15 |
| Anastrozole | 41 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21,392 across 150 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-22
- Last updated
- 2026-02-19
- Certified
- 2026-02-19
Frequently asked questions
- What is Gustavo Fonseca's NPI number?
- Gustavo Fonseca's National Provider Identifier (NPI) is 1063478766, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gustavo Fonseca's specialty?
- Gustavo Fonseca is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gustavo Fonseca located?
- Gustavo Fonseca's practice location on file with NPPES is 521 N Lecanto Hwy, Lecanto, FL 34461-9187.
- What is Gustavo Fonseca's phone number?
- The practice phone number listed in the NPPES registry for Gustavo Fonseca is (352) 746-0707.
- Does Gustavo Fonseca accept Medicare?
- Gustavo Fonseca is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gustavo Fonseca's NPI active?
- Yes — Gustavo Fonseca's NPI (1063478766) is active in the NPPES registry as of the last update on 2026-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.