Calixto B. Zaldivar, M.D.
NPI 1972658292ActiveIndividual· Specialist· Gainesville, FL
Specialist (M.D.) with Hospital Internal Medicine PA, practicing in Gainesville, Florida. Their prescriptions cost Medicare Part D more than their services did: $541,351 for 7,853 claims, against $218,564 paid for services in 2024. Alpha Cognition USA, Inc. was the largest of 2 companies reporting payments in 2025, $179.87 in all, mostly food and beverage. Lists HCA Florida Lake City Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1972658292 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 25, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | ME0079292 | FL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,559 |
|---|---|
| Services billed | 4,149 across 20 procedure codes |
| Paid by Medicare | $218,564 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,853 · 7,899 30-day fills |
|---|---|
| Patients | 295 |
| Total drug cost | $541,351 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Hospital Internal Medicine PAGainesville, FL · 43 clinicians
Hospital affiliations
- HCA Florida Lake City HospitalLake City, FL
- HCA Florida North Florida HospitalGainesville, FL
- HCA Florida Putnam HospitalPalatka, FL
- Lake Butler HospitalLake Butler, FL
- Uf Health Shands HospitalGainesville, FL
Other facilities
- Aveanna Home HealthHome health agency · Gainesville, FL
- Haven HospiceHospice · Gainesville, FL
- Vitas Healthcare Corporation of FloridaHospice · Melbourne, FL
- Select Specialty Hospital Gainesville IncLong-term care hospital · Gainesville, FL
- Lake City Healthcare and Rehabilitation CenterNursing home · Lake City, FL
- Live Oak Healthcare and Rehabilitation CenterNursing home · Live Oak, FL
- Palm Garden of GainesvilleNursing home · Gainesville, FL
- Tri-County Nursing HomeNursing home · Trenton, FL
- Williston Care Center and RehabNursing home · Williston, FL
Industry payments (Open Payments)
- 2025$179.87 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alpha Cognition USA, Inc. | $165.54 | 1 |
| Convatec Inc. | $14.33 | 1 |
What the 2025 payments were for
- Food and Beverage$179.87 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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