Who Paid My Doc
Mark Klaassen
Orthopaedic Surgery Elkhart, IN Medical Doctor
NPI 1053325589 CMS profile 320167
2310 California Road, Ste A, Elkhart, IN 46514
General payments
$1,320,813
Research payments
$14,710
Ownership & investment interest
$796,241
Research they led as principal investigator
$76,675
Through program year 2025, Mark Klaassen of Elkhart, IN is reported in the CMS Open Payments database as having received $1,320,813 across 766 general payments and $14,710 in research payments paid to them. Separately, studies naming them as principal investigator received $76,675 in research payments, paid to institutions rather than to them. They also declared ownership or investment interests valued at $796,241 across 4 holdings.
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. The principal-investigator line is research money paid to institutions for studies they led — not to them — and is not added to anything either.
General payments for this record sit in the 98th percentile of Orthopaedic Surgery profiles with reported payments. Percentile describes the distribution, not the conduct.
By program year
12 rows| Year | Kind | Relative to this record's peak year | Amount | Records |
|---|---|---|---|---|
| 2025 | General | $73,996 | 38 | |
| 2024 | General | $54,133 | 42 | |
| 2023 | General | $118,241 | 69 | |
| 2022 | General | $639,890 | 96 | |
| 2021 | General | $124,465 | 134 | |
| 2021 | Research | $4,410 | 1 | |
| 2020 | General | $122,860 | 147 | |
| 2019 | General | $187,228 | 240 | |
| 2019 | Research | $10,300 | 1 | |
| 2021 | Ownership | $595,320 | 2 | |
| 2020 | Ownership | $100,000 | 1 | |
| 2019 | Ownership | $100,922 | 1 |
Beside peers
- Mark Klaassen
- Orthopaedic Surgery median
- Middle half of Orthopaedic Surgery
- National median
In program year 2025, general payments to Mark Klaassen were reported at $73,996. Among 15,343 Orthopaedic Surgery profiles paid that year, the median was $563 and the middle half received between $147 and $2,717.
Show as a table
| Year | Mark Klaassen | Orthopaedic Surgery median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $187,228 | $644 | $140–$2,844 | $163 |
| 2020 | $122,860 | $312 | $75–$1,860 | $114 |
| 2021 | $124,465 | $520 | $117–$2,495 | $132 |
| 2022 | $639,890 | $598 | $128–$2,731 | $149 |
| 2023 | $118,241 | $461 | $128–$2,264 | $160 |
| 2024 | $54,133 | $497 | $134–$2,475 | $164 |
| 2025 | $73,996 | $563 | $147–$2,717 | $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 · 1 drugPart D claims
30
Drug cost
$70
Branded share of claims
0%
| Drug | Type | Relative to their largest | Claims | Drug cost |
|---|---|---|---|---|
| Amoxicillin | Generic | 30 | $70 |
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 1,233 Part D prescribers listed as Orthopaedic Surgery; they describe a distribution and say nothing about conduct.
Records
768 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.
Other Orthopaedic Surgery in Indiana
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Sanford Kunkel
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Related records
Orthopaedic Surgery in Indiana
Practitioners in the same specialty and state, ranked by reported value.
All Orthopaedic Surgery
Everyone recorded under this specialty, nationwide.
Doctors in Indiana
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.