Antonio Santiago-Agostini, MD
NPI 1801834445ActiveIndividual· Internal Medicine· Owosso, MI
Internal Medicine (MD) in Owosso, Michigan, trained at Ponce School of Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $1,035,055 for 9,053 claims, against $25,881 paid for services in 2024. Eli Lilly Export S.A. Puerto Rico Branch reported $21.28 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1801834445 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 4, 2006 |
| Last updated in NPPES | Jun 17, 2020 |
| Certified by provider | Jun 17, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4301054955 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 179 |
|---|---|
| Services billed | 443 across 16 procedure codes |
| Paid by Medicare | $25,881 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,053 · 22,133 30-day fills |
|---|---|
| Patients | 617 |
| Total drug cost | $1,035,055 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Ponce School of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Internal Medicine |
Medical group
- Memorial HospitalPerry, MI · 214 clinicians
Hospital affiliations
- Edward W Sparrow HospitalLansing, MI
- Memorial HealthcareOwosso, MI
Other facilities
- Memorial HealthcareHome health agency · Owosso, MI
Industry payments (Open Payments)
- 2025$21.28 · 1 payment from 1 company
- 2024$16.43 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Eli Lilly Export S.A. Puerto Rico Branch | $21.28 | 1 |
What the 2025 payments were for
- Food and Beverage$21.28 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 internal medicine physicians in Owosso · All internal medicine physicians in Michigan