Carlos F. Chang, M.D.
NPI 1922005016ActiveIndividual· Internal Medicine· Tavares, FL
Internal Medicine (M.D.) with Ability Health Services and Rehabilitation LP and 2 other groups, practicing in Tavares, Florida. Their prescriptions cost Medicare Part D more than their services did: $687,559 for 9,514 claims, against $380,503 paid for services in 2024. Pfizer Inc. was the largest of 3 companies reporting payments in 2025, $84.50 in all, mostly food and beverage. Lists Adventhealth Daytona Beach and 1 other hospital as hospital affiliations.
Overview
| NPI | 1922005016 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 5, 2005 |
| Last updated in NPPES | Mar 13, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | ME71903 | FL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 785 |
|---|---|
| Services billed | 6,146 across 53 procedure codes |
| Paid by Medicare | $380,503 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,514 · 19,739 30-day fills |
|---|---|
| Patients | 785 |
| Total drug cost | $687,559 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Ability Health Services and Rehabilitation LPSanford, FL · 1,269 clinicians
- Ability Health Services, IncSanford, FL · 1,258 clinicians
- Cora Health Services IncThe Villages, FL · 1,136 clinicians
Hospital affiliations
- Adventhealth Daytona BeachDaytona Beach, FL
- Adventhealth WatermanTavares, FL
Other facilities
- Adventhealth Home HealthHome health agency · Leesburg, FL
- Centerwell Home HealthHome health agency · The Villages, FL
- HCA Florida Healthcare at HomeHome health agency · The Villages, FL
- Pinnacle Home Care of the Villages IncHome health agency · The Villages, FL
- Waterman Village Home CareHome health agency · Mount Dora, FL
- Vitas Healthcare Corporation of FloridaHospice · Melbourne, FL
- Edgewater at Waterman VillageNursing home · Mount Dora, FL
- Solaris Healthcare WatermanNursing home · Tavares, FL
Industry payments (Open Payments)
- 2025$84.50 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $45.96 | 2 |
| Lilly USA, LLC | $22.66 | 1 |
| Exact Sciences Corporation | $15.88 | 1 |
What the 2025 payments were for
- Food and Beverage$84.50 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 40 internal medicine physicians in Tavares · All internal medicine physicians in Florida