CHRISTOPHER J RONKAR (MD) – Rheumatology Physician, NPI 1992810956
Rheumatology Physician
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NPPES metrics only — not quality of care.
61 RHEUMATOLOGY in IA
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Provider Addresses for CHRISTOPHER J RONKAR (MD)
Mercy Arthritis and Osteoporosis Center, 8421, Plum Drive, Plumwood Terrace Apartments, Urbandale, Polk County, Iowa, 50322, United States
URBANDALE, IA 503227356
Phone: (515) 270-7222
Fax: (515) 270-7202
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $19.
Total Amount is formed as General ($19) + Research ($0) + Ownership ($0) = $19.
Last reported payment date: 2023-08-27 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($19).
Total Amount
$19
General + Research + Ownership
Payments
1
Total payment records
General Amount
$19
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-08-27
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GlaxoSmithKline, LLC. | $19 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-01-23
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100123000247 | I | Rheumatology | IA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 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) | 23,800 | 15 | $0 |
| J0897 | Injection, denosumab, 1 mg | 23,640 | 233 | $0 |
| J3111 | Injection, romosozumab-aqqg, 1 mg | 14,910 | 26 | $0 |
| J1602 | Injection, golimumab, 1 mg, for intravenous use | 9,500 | 20 | $0 |
| 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) | 8,725 | 17 | $0 |
Insurance plans in this area (ZIP 50322)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| RHEUMATOLOGY | IA | 20610 | Aspiration and/or injection of large joint or joint capsule | 108 | 74 |
| RHEUMATOLOGY | IA | 73562 | X-ray of knee, 3 views | 48 | 31 |
| RHEUMATOLOGY | IA | 96375 | Injection of different drug or substance into a vein for therapy, diagnosis, or prevention | 44 | 17 |
| RHEUMATOLOGY | IA | 96415 | Infusion of chemotherapy into a vein | 205 | 34 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | IA | |
| Physician Assistant | IA | |
| R H E U M A T O L O G Y | IA | |
| Physician Assistant | IA | |
| Rheumatology, Internal Medicine | IA | |
| R H E U M A T O L O G Y | IA | |
| - | IA | |
| - | IA | |
| R H E U M A T O L O G Y | IA | |
| R H E U M A T O L O G Y | IA |
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