DR. JOON S AHN (M.D.) – Orthopaedic Hand Surgery Physician, NPI 1083681027
Orthopaedic Hand Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
172 HAND SURGERY in IL
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Provider Addresses for DR. JOON S AHN (M.D.)
Orthopaedic Center of Southern Illinois, 4121, Veterans Memorial Drive, Mount Vernon, Jefferson County, Illinois, 62864, United States
MOUNT VERNON, IL 628646262
Phone: (618) 242-3778
Fax: (618) 242-2551
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 2 Open Payments records for all available years, with a total value of $34.
Total Amount is formed as General ($34) + Research ($0) + Ownership ($0) = $34.
Last reported payment date: 2024-11-14 • Largest payer in this snapshot: Amgen Inc. ($34).
Total Amount
$34
General + Research + Ownership
Payments
2
Total payment records
General Amount
$34
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-14
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Amgen Inc. | $34 |
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: 2010-06-04
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 |
|---|---|---|---|---|
| I20100604001096 | I | Hand Surgery | IL | 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 |
|---|---|---|---|---|
| J3301 | Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 1,016 | 213 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 379 | 269 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 254 | 212 | $0 |
| 73130 | X-ray of hand, minimum of 3 views | 188 | 134 | $0 |
| 73030 | X-ray of shoulder, minimum of 2 views | 171 | 132 | $0 |
Insurance plans in this area (ZIP 62864)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physical Therapist In Private Practice | IL | |
| Physical Therapist In Private Practice | IL | |
| Physical Therapist In Private Practice | IL | |
| Physical Therapist In Private Practice | IL | |
| Physician Assistant | IL | |
| Physical Therapist In Private Practice | IL | |
| Nurse Practitioner | IL | |
| Physical Therapist In Private Practice | IL | |
| Occupational Therapist In Private Practice | IL | |
| Interventional Pain Management, Anesthesiology | IL |
Reviews
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