Mark D. Castellani, MD
NPI 1598763542ActiveIndividual· Internal Medicine, Clinical Cardiac Electrophysiology· Lansing, MI
Internal Medicine, Clinical Cardiac Electrophysiology (MD) in Lansing, Michigan, trained at Wayne State University School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $424,528 for 969 claims, against $58,036 paid for services in 2024. Medtronic, Inc. reported $20.56 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1598763542 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 13, 2005 |
| Last updated in NPPES | Jun 17, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Clinical Cardiac Electrophysiology Primary | 207RC0001X | 4301052699 | 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 - Cardiovascular Disease (Cardiology) (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,747 |
|---|---|
| Services billed | 2,747 across 42 procedure codes |
| Paid by Medicare | $58,036 |
Part D prescriptions in 2024
| Prescriptions (claims) | 969 · 2,558 30-day fills |
|---|---|
| Patients | 250 |
| Total drug cost | $424,528 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Edward W Sparrow Hospital AssociationLansing, MI · 730 clinicians
Hospital affiliations
- Edward W Sparrow HospitalLansing, MI
- Sparrow Ionia HospitalIonia, MI
- University of Michigan Health - Sparrow EatonCharlotte, MI
- University of Michigan Health- Sparrow ClintonSaint Johns, MI
- University of Michigan Health-Sparrow CarsonCarson City, MI
Industry payments (Open Payments)
- 2025$20.56 · 1 payment from 1 company
- 2024$394.60 · 13 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $20.56 | 1 |
What the 2025 payments were for
- Food and Beverage$20.56 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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