Who Paid My Doc
Mark Johnson
Internal Medicine Mason City, IA Medical Doctor
NPI 1013923127 CMS profile 46454
910 N Eisenhower Ave, Mason City, IA 50401
General payments
$222,961
Research payments
$0
Ownership & investment interest
$0
Through program year 2025, Mark Johnson of Mason City, IA is reported in the CMS Open Payments database as having received $222,961 across 433 general payments and $0 in research payments paid to them.
No combined total General, research and ownership are kept apart. Each is reported under its own rules, and ownership is not money that moved at all but the value of a stake held. A meal, a clinical trial grant and a shareholding do not add up to anything meaningful, so this site does not add them.
General payments for this record sit in the 99th percentile of Internal Medicine profiles with reported payments. Percentile describes the distribution, not the conduct.
By program year
7 rows| Year | Kind | Relative to this record's peak year | Amount | Records |
|---|---|---|---|---|
| 2025 | General | $28,199 | 35 | |
| 2024 | General | $16,974 | 47 | |
| 2023 | General | $10,297 | 34 | |
| 2022 | General | $54,846 | 61 | |
| 2021 | General | $38,629 | 77 | |
| 2020 | General | $24,823 | 42 | |
| 2019 | General | $49,192 | 137 |
Beside peers
- Mark Johnson
- Internal Medicine median
- Middle half of Internal Medicine
- National median
In program year 2025, general payments to Mark Johnson were reported at $28,199. Among 52,115 Internal Medicine profiles paid that year, the median was $156 and the middle half received between $47 and $551.
Show as a table
| Year | Mark Johnson | Internal Medicine median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $49,192 | $159 | $48–$570 | $163 |
| 2020 | $24,823 | $119 | $33–$402 | $114 |
| 2021 | $38,629 | $135 | $37–$521 | $132 |
| 2022 | $54,846 | $141 | $42–$496 | $149 |
| 2023 | $10,297 | $149 | $45–$519 | $160 |
| 2024 | $16,974 | $154 | $47–$537 | $164 |
| 2025 | $28,199 | $156 | $47–$551 | $169 |
Breakdown
A payment can name more than one product, so these amounts overlap and do not add up to the general-payment figure.
Prescribing to Medicare patients
Part D · data year 2024 · 93 drugsPart D claims
9,572
Drug cost
$4,969,953
Branded share of claims
79.2%
| Drug | Type | Relative to their largest | Claims | Drug cost |
|---|---|---|---|---|
| Ozempic Semaglutide | Brand | 1,205 | $1,336,999 | |
| Jardiance Empagliflozin | Brand | 749 | $624,968 | |
| Trulicity Dulaglutide | Brand | 381 | $441,181 | |
| Soliqua 100-33 Insulin Glargine/Lixisenatide | Brand | 475 | $434,923 | |
| Synjardy Xr Empagliflozin/Metformin Hcl | Brand | 344 | $289,395 | |
| Mounjaro Tirzepatide | Brand | 240 | $261,665 | |
| Farxiga Dapagliflozin Propanediol | Brand | 319 | $251,072 | |
| Fiasp Flextouch Insulin Aspart (Niacinamide) | Brand | 183 | $172,064 | |
| Novolog Flexpen Insulin Aspart | Brand | 492 | $106,420 | |
| Humalog Kwikpen U-200 Insulin Lispro | Brand | 71 | $98,179 |
The 10 drugs with the highest cost, of 93 counted.
Drug cost is what was paid for the drugs at the pharmacy — by Medicare, the patient and others — and is not money to the prescriber. Medicare Part D only: drugs dispensed to Medicare beneficiaries. A drug with fewer than 11 claims for this prescriber is not published, so a missing drug does not mean zero. The medians are for the 6,527 Part D prescribers listed as Endocrinology; they describe a distribution and say nothing about conduct.
Billing to Medicare
Part B · data year 2024 · 12 billing codesPaid by Medicare
$106,099
Medicare patients
1,561
Services billed
3,877
| Condition among their Medicare patients | Relative to the most common | Share of patients |
|---|---|---|
| High blood pressure | 75% | |
| Diabetes | 55% | |
| Arthritis | 51% | |
| Ischemic heart disease | 46% | |
| Chronic kidney disease | 43% | |
| Heart failure | 41% | |
| Depression | 34% | |
| Atrial fibrillation | 32% |
Medicare Part B only: services billed to Medicare. Rows covering fewer than 11 beneficiaries are not published. Only drugs given in the clinic are itemised here; the rest of what this provider billed is in the total above.
Payments and prescribing
5 products · payments 2024Two separate records. The payments come from Open Payments and the claims from Medicare. They are set side by side because they name the same product; they do not show that a payment affected a prescription.
| Product | Paid by | Related payments | Part D claims | Part B services |
|---|---|---|---|---|
| JARDIANCE |
|
$10,049 | 749 | — |
| Ozempic |
|
$6,069 | 1,205 | — |
| Kerendia |
|
$18 | 12 | — |
| TZIELD |
|
$14 | — | — |
| ZEPBOUND |
|
$13 | — | — |
A dash means Medicare published no figure for this doctor and product — fewer than 11 claims, or the product is not covered under that part — which is not the same as none. Payments are general payments only; one that names several products is split evenly between them, so an amount is payments related to the product, not money paid for it.
Records
433 reportedEvery payment, record by record
Date, company, amount, what it was for and the product named — filter by year, kind and company, or download as CSV.
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Every practitioner in the state with a reported payment.
How to read this page
What each amount means, and what it does not mean.
What this means
U.S. law requires drug and medical device manufacturers to report payments and transfers of value they make to physicians and teaching hospitals. The Centers for Medicare & Medicaid Services publishes that record each year. This page shows what was reported about this person, and nothing else.
An ownership interest is different from the other two. It is not a payment: it is a stake — shares, options, a partnership holding — that a physician or an immediate family member held in a manufacturer during that year. The figure shown is what the stake was reported to be worth.
Research payments frequently pass through a clinician to the institution running a trial, and rarely represent personal income. They should be read differently from general payments.