Samuel Lewis Johnston, M.D.
NPI 1184832271ActiveIndividual· Internal Medicine, Clinical Cardiac Electrophysiology· Iowa City, IA
Internal Medicine, Clinical Cardiac Electrophysiology (M.D.) in Iowa City, Iowa, licensed in IA, IL and OR, with an NPI issued in May 2007. Their prescriptions cost Medicare Part D more than their services did: $34,169 for 185 claims, against $12,672 paid for services in 2024. Boston Scientific Corporation was the largest of 5 companies reporting payments in 2025, $876.15 in all, mostly food and beverage.
Overview
| NPI | 1184832271 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 20, 2007 |
| Last updated in NPPES | Dec 12, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Clinical Cardiac Electrophysiology Primary | 207RC0001X | MD-42224 | IA |
| Internal Medicine | 207R00000X | 036-114065 | IL |
| Internal Medicine | 207R00000X | MD153947 | OR |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 036-114065 | IL |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | MD153947 | OR |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | MD-4224 | IA |
| Internal Medicine, Clinical Cardiac Electrophysiology | 207RC0001X | 036114065 | IL |
| Internal Medicine, Clinical Cardiac Electrophysiology | 207RC0001X | MD153947 | OR |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiac Electrophysiology (IA); Practitioner - Cardiovascular Disease (Cardiology) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 371 |
|---|---|
| Services billed | 431 across 27 procedure codes |
| Paid by Medicare | $12,672 |
Part D prescriptions in 2024
| Prescriptions (claims) | 185 · 429 30-day fills |
|---|---|
| Patients | 49 |
| Total drug cost | $34,169 |
| Generic share | 76% of claims |
Industry payments (Open Payments)
- 2025$876.15 · 28 payments from 5 companies
- 2024$1,544 · 29 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $358.86 | 20 |
| Abbott Laboratories | $194.78 | 4 |
| Impulse Dynamics (USA) Inc. | $152.92 | 2 |
| Biosense Webster, Inc. | $123.11 | 1 |
| Biotronik Inc. | $46.48 | 1 |
What the 2025 payments were for
- Food and Beverage$876.15 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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