Total Payments
$5,665
2023 Payments
$19.37
Companies
8
Transactions
13
Medicare Patients
19,093
Medicare Billing
$5.9M
Payment Breakdown by Category
Consulting$4,640 (81.9%)
Food & Beverage$1,025 (18.1%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Consulting Fee | $4,640 | 1 | 81.9% |
| Food and Beverage | $1,025 | 12 | 18.1% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Amgen Inc. | $4,796 | 3 | $0 (2022) |
| Celgene Corporation | $253.58 | 2 | $0 (2017) |
| Radius Health, Inc. | $225.00 | 2 | $0 (2018) |
| AstraZeneca Pharmaceuticals LP | $185.97 | 2 | $0 (2022) |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $106.25 | 1 | $0 (2021) |
| Lilly USA, LLC | $64.59 | 1 | $0 (2018) |
| GlaxoSmithKline, LLC. | $19.37 | 1 | $0 (2023) |
| Novartis Pharmaceuticals Corporation | $13.90 | 1 | $0 (2017) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2023 | $19.37 | 1 | GlaxoSmithKline, LLC. ($19.37) |
| 2022 | $4,826 | 3 | Amgen Inc. ($4,640) |
| 2021 | $106.25 | 1 | Boehringer Ingelheim Pharmaceuticals, Inc. ($106.25) |
| 2019 | $156.38 | 2 | Amgen Inc. ($156.38) |
| 2018 | $289.59 | 3 | Radius Health, Inc. ($225.00) |
| 2017 | $267.48 | 3 | Celgene Corporation ($253.58) |
All Payment Transactions
13 individual payment records from CMS Open Payments
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 08/27/2023 | GlaxoSmithKline, LLC. | BENLYSTA (Biological) | Food and Beverage | In-kind items and services | $19.37 | General |
| Category: IMMUNOLOGY | ||||||
| 10/27/2022 | AstraZeneca Pharmaceuticals LP | SAPHNELO (Biological) | Food and Beverage | In-kind items and services | $113.64 | General |
| Category: Inflammation and Autoimmunity | ||||||
| 09/21/2022 | Amgen Inc. | EVENITY (Biological) | Consulting Fee | Cash or cash equivalent | $4,640.00 | General |
| Category: Bone Health | ||||||
| 05/25/2022 | AstraZeneca Pharmaceuticals LP | SAPHNELO (Biological) | Food and Beverage | In-kind items and services | $72.33 | General |
| Category: Inflammation and Autoimmunity | ||||||
| 11/16/2021 | Boehringer Ingelheim Pharmaceuticals, Inc. | OFEV (Drug) | Food and Beverage | In-kind items and services | $106.25 | General |
| Category: RESPIRATORY | ||||||
| 07/11/2019 | Amgen Inc. | EVENITY (Biological) | Food and Beverage | In-kind items and services | $94.17 | General |
| Category: Bone Health | ||||||
| 04/04/2019 | Amgen Inc. | — | Food and Beverage | In-kind items and services | $62.21 | General |
| 11/08/2018 | Radius Health, Inc. | Tymlos (Biological) | Food and Beverage | In-kind items and services | $100.00 | General |
| Category: Endocrinology | ||||||
| 04/25/2018 | Lilly USA, LLC | TALTZ (Drug) | Food and Beverage | In-kind items and services | $64.59 | General |
| Category: Immunology | ||||||
| 04/12/2018 | Radius Health, Inc. | Tymlos (Biological) | Food and Beverage | In-kind items and services | $125.00 | General |
| Category: Endocrinology | ||||||
| 11/06/2017 | Celgene Corporation | Otezla (Drug) | Food and Beverage | In-kind items and services | $123.54 | General |
| Category: Dermatology | ||||||
| 10/26/2017 | Celgene Corporation | Otezla (Drug) | Food and Beverage | In-kind items and services | $130.04 | General |
| Category: Dermatology | ||||||
| 01/19/2017 | Novartis Pharmaceuticals Corporation | COSENTYX (Biological) | Food and Beverage | In-kind items and services | $13.90 | General |
| Category: DERMATOLOGY | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 50 | 5,033 | 94,845 | $3.1M | $1.5M |
| 2022 | 49 | 4,894 | 91,676 | $3.0M | $1.4M |
| 2021 | 51 | 4,609 | 87,492 | $2.9M | $1.5M |
| 2020 | 48 | 4,557 | 75,373 | $2.6M | $1.4M |
Total Patients
19,093
Total Services
349,386
Medicare Billing
$5.9M
Procedure Codes
198
All Medicare Procedures & Services
198 procedure records from CMS Medicare Utilization — Page 1 of 8
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| J0897 | Injection, denosumab, 1 mg | Office | 2023 | 233 | 23,640 | $638,280 | $433,335 | 67.9% |
| J0129 | 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) | Office | 2023 | 17 | 8,725 | $628,200 | $293,580 | 46.7% |
| J9312 | Injection, rituximab, 10 mg | Office | 2023 | 16 | 3,180 | $365,700 | $202,204 | 55.3% |
| J3111 | Injection, romosozumab-aqqg, 1 mg | Office | 2023 | 26 | 14,910 | $162,519 | $117,923 | 72.6% |
| J1602 | Injection, golimumab, 1 mg, for intravenous use | Office | 2023 | 20 | 9,500 | $285,000 | $99,785 | 35.0% |
| J0717 | 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) | Office | 2023 | 15 | 23,800 | $214,200 | $92,564 | 43.2% |
| J1745 | Injection, infliximab, excludes biosimilar, 10 mg | Office | 2023 | 16 | 2,450 | $232,750 | $64,098 | 27.5% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 404 | 601 | $122,003 | $49,245 | 40.4% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2023 | 373 | 568 | $78,449 | $32,295 | 41.2% |
| 96413 | Administration of chemotherapy into vein, 1 hour or less | Office | 2023 | 87 | 316 | $104,280 | $30,300 | 29.1% |
| 96401 | Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Office | 2023 | 243 | 459 | $80,325 | $23,612 | 29.4% |
| 36415 | Insertion of needle into vein for collection of blood sample | Office | 2023 | 477 | 842 | $8,420 | $7,040 | 83.6% |
| 77080 | Dxa bone density measurement of hip, pelvis, spine | Office | 2023 | 308 | 308 | $30,356 | $6,968 | 23.0% |
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office | 2023 | 114 | 133 | $9,443 | $6,288 | 66.6% |
| 82565 | Blood creatinine level | Office | 2023 | 438 | 780 | $10,920 | $3,886 | 35.6% |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | Office | 2023 | 34 | 34 | $10,540 | $3,736 | 35.4% |
| 96415 | Administration of chemotherapy into vein, each additional hour | Office | 2023 | 43 | 145 | $10,150 | $3,019 | 29.7% |
| 77089 | Calculation of trabecular bone score (tbs) using imaging data with interpretation and report on fracture risk | Office | 2023 | 103 | 103 | $3,914 | $3,002 | 76.7% |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | Office | 2023 | 21 | 23 | $6,210 | $2,982 | 48.0% |
| 20610 | Aspiration and/or injection of fluid from large joint | Office | 2023 | 33 | 47 | $8,923 | $2,523 | 28.3% |
| 82310 | Calcium level, total | Office | 2023 | 304 | 497 | $6,958 | $2,505 | 36.0% |
| 85027 | Complete blood cell count (red cells, white blood cell, platelets), automated test | Office | 2023 | 200 | 363 | $6,171 | $2,277 | 36.9% |
| 86235 | Measurement of antibody for assessment of autoimmune disorder, any method | Office | 2023 | 18 | 126 | $3,780 | $2,016 | 53.3% |
| 84460 | Liver enzyme (sgpt), level | Office | 2023 | 205 | 374 | $5,236 | $1,921 | 36.7% |
| 84450 | Liver enzyme (sgot), level | Office | 2023 | 205 | 374 | $5,236 | $1,880 | 35.9% |
About Dr. Christopher Ronkar, MD
Dr. Christopher Ronkar, MD is a Rheumatology healthcare provider based in Urbandale, Iowa. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 08/20/2006. The National Provider Identifier (NPI) number assigned to this provider is 1992810956.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Christopher Ronkar, MD has received a total of $5,665 in payments from pharmaceutical and medical device companies, with $19.37 received in 2023. These payments were reported across 13 transactions from 8 companies. The most common payment nature is "Consulting Fee" ($4,640).
As a Medicare-enrolled provider, Ronkar has provided services to 19,093 Medicare beneficiaries, totaling 349,386 services with total Medicare billing of $5.9M. Data is available for 4 years (2020–2023), covering 198 distinct procedure/service records.
Ad
Practice Information
- Specialty Rheumatology
- Location Urbandale, IA
- Active Since 08/20/2006
- Last Updated 05/13/2025
- Taxonomy Code 207RR0500X
- Entity Type Individual
- NPI Number 1992810956
Products in Payments
- EVENITY (Biological) $4,734
- Otezla (Drug) $253.58
- Tymlos (Biological) $225.00
- SAPHNELO (Biological) $185.97
- OFEV (Drug) $106.25
- TALTZ (Drug) $64.59
- BENLYSTA (Biological) $19.37
- COSENTYX (Biological) $13.90
Data Sources
Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.
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