Medical Doctor Program year 2023 Reported 2019–2023 Source: CMS Open Payments, 2026 publication

Christopher Ronkar

Rheumatology Urbandale, IA Medical Doctor

NPI 1992810956 CMS profile 1217079

8421 Plum Dr, Urbandale, IA 50322

Open in the dashboard

General payments

$5,108

7 records reported · program years 2019–2023

Research payments

$0

Paid to them · None reported · program years 2019–2023

Ownership & investment interest

$0

None reported

Through program year 2023, Christopher Ronkar of Urbandale, IA is reported in the CMS Open Payments database as having received $5,108 across 7 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 61st percentile of Rheumatology profiles with reported payments. Percentile describes the distribution, not the conduct.

By program year

4 rows
Year Kind Relative to this record's peak year Amount Records
2023 General $19 1
2022 General $4,826 3
2021 General $106 1
2019 General $156 2

Beside peers

Year by year, beside peers General payments · among profiles paid that year
  • Christopher Ronkar
  • Rheumatology median
  • Middle half of Rheumatology
  • National median

In program year 2025, general payments to Christopher Ronkar were reported at $0. Among 4,454 Rheumatology profiles paid that year, the median was $903 and the middle half received between $171 and $2,775.

Show as a table
Year Christopher Ronkar Rheumatology median Middle half National median
2019 $156 $744 $153–$2,687 $163
2020 $0 $462 $98–$2,027 $114
2021 $106 $531 $101–$2,153 $132
2022 $4,826 $627 $125–$2,303 $149
2023 $19 $741 $145–$2,524 $160
2024 $0 $830 $166–$2,660 $164
2025 $0 $903 $171–$2,775 $169

Breakdown

Who paid General payments · program years 2019–2023
  1. Amgen Inc. $4,796 3 payments
  2. AstraZeneca Pharmaceuticals LP $186 2 payments
  3. Boehringer Ingelheim Pharmaceuticals, Inc. $106 1 payment
  4. GlaxoSmithKline, LLC. $19 1 payment

Every payment, record by record

What the payments were for General payments · program years 2019–2023
  1. Consulting Fee $4,640 1 payment
  2. Food and Beverage $468 6 payments
Products named General payments · program years 2019–2023
  1. EVENITY $4,734 2 payments
  2. SAPHNELO $186 2 payments
  3. OFEV $106 1 payment
  4. BENLYSTA $19 1 payment

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 · 38 drugs

Part D claims

3,312

Median for Rheumatology: 1,511

Drug cost

$817,239

Median for Rheumatology: $1,139,948

Branded share of claims

19.5%

Median for Rheumatology: 28.8%

Drugs this doctor was counted under in Medicare Part D 2024, by drug cost
Drug Type Relative to their largest Claims Drug cost
Humira(Cf) Pen Adalimumab Brand 42 $439,946
Enbrel Etanercept Brand 42 $312,626
Hydroxychloroquine Sulfate Generic 473 $14,573
Methotrexate Methotrexate Sodium Brand 324 $6,549
Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen Brand 173 $5,690
Gabapentin Generic 159 $3,901
Fentanyl Generic 26 $3,474
Tramadol Hcl Generic 279 $2,887
Celecoxib Generic 146 $2,831
Leflunomide Generic 51 $2,514

The 10 drugs with the highest cost, of 38 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 5,224 Part D prescribers listed as Rheumatology; they describe a distribution and say nothing about conduct.

Billing to Medicare

Part B · data year 2024 · 103 billing codes

Paid by Medicare

$1,708,278

Of which drugs: $1,467,498

Medicare patients

739

Average age 75

Services billed

107,730

618 women, 121 men among their patients

Share of this provider's Medicare patients with each condition
Condition among their Medicare patients Relative to the most common Share of patients
Arthritis 75%
High blood pressure 62%
Osteoporosis 59%
Depression 25%
Chronic kidney disease 19%
Diabetes 17%
Ischemic heart disease 17%
Cancer 14%
Drugs given in the clinic that this provider billed Medicare Part B for
Drug given in the clinic Where Patients Services Paid by Medicare
Injection, denosumab, 1 mg J0897 Office 231 24,180 $497,150
Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) J0129 Office 19 9,375 $317,366
Injection, rituximab, 10 mg J9312 Office 12 2,900 $177,640
Injection, romosozumab-aqqg, 1 mg J3111 Office 23 11,970 $98,610
Injection, infliximab, excludes biosimilar, 10 mg J1745 Office 18 3,540 $87,476
Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) J0717 Office 13 18,800 $68,229
Injection, zoledronic acid, 1 mg J3489 Office 32 160 $749
Injection, methylprednisolone acetate, 1 mg J1010 Office 19 2,000 $185
Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301 Office 22 197 $154
Injection, dexamethasone sodium phosphate, 1 mg J1100 Office 22 654 $59

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.

Records

7 reported

Every 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.

Related records

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.

Provenance

Source: CMS Open Payments · through program year 2023

Data current to program year 2025, from CMS's 2026 publication.

We reproduce what manufacturers reported. We do not verify, edit or correct the underlying records.

A payment record is not evidence of wrongdoing. Financial relationships between industry and medicine are legal, common and often necessary for research. Who Paid My Doc reports what was disclosed; it does not judge it.

Who Paid My Doc is independent and is not affiliated with, endorsed by or sponsored by CMS or any U.S. government agency. It is not a consumer reporting agency and this is not a consumer report; do not use it for decisions covered by the Fair Credit Reporting Act.

How to dispute or correct a record