Dr. Joon Ahn, M.D.
What this data tells you about Dr. Ahn
Dr. Joon Ahn is an orthopaedic hand surgery physician in Mount Vernon, IL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Ahn performed 3,307 Medicare services across 1,934 unique beneficiaries.
Between the years covered by Open Payments, Dr. Ahn received a total of $7,086 from 11 pharmaceutical and/or device companies across 33 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in orthopaedic hand surgery physician. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Ahn is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
1,016 | $1 | $22 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
379 | $65 | $220 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
254 | $40 | $181 |
| X-ray of hand, minimum of 3 views An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints. |
188 | $25 | $209 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
171 | $23 | $222 |
| Wrist X-ray, minimum 3 views An imaging test using X-rays to capture at least three different angles of the wrist bones and joints. |
166 | $27 | $229 |
| Tendon or ligament injection A procedure involving the injection of medication into a tendon or ligament. |
116 | $38 | $315 |
| X-ray of finger, minimum of 2 views An X-ray imaging test of a finger using at least two different angles to visualize the bones and surrounding structures. |
108 | $26 | $178 |
| Joint fluid aspiration or injection, small joint Removal of fluid from a small joint or injection of medication into a small joint. |
106 | $34 | $322 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
104 | $80 | $300 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
75 | $51 | $401 |
| MRI of arm joint, without contrast An MRI scan uses magnetic fields and radio waves to create detailed images of the arm joint. This specific procedure is performed without the use of a contrast dye. |
71 | $74 | $1,213 |
| Elbow X-ray, minimum 3 views An X-ray imaging test of the elbow joint that captures at least three different angles to visualize the bones and surrounding structures. |
69 | $20 | $211 |
| Endoscopic release of wrist ligament A minimally invasive procedure using a small camera to cut and release ligaments in the wrist. |
64 | $360 | $2,800 |
| Wrist X-ray, 2 views An X-ray imaging test of the wrist using two different angles to visualize the bones and joints. |
56 | $24 | $203 |
| Bone density scan (DEXA) of hip, pelvis, and spine This test measures bone density in the hip, pelvis, and spine to assess bone strength. It also includes an assessment for spine fractures. |
42 | $48 | $398 |
| Trabecular bone score calculation This procedure calculates the trabecular bone score using imaging data to assess bone microarchitecture. It includes interpretation and a report on fracture risk. |
36 | $28 | $104 |
| Joint fluid aspiration or injection, medium joint Removal of fluid from a medium-sized joint or injection of medication into the joint space. |
35 | $40 | $365 |
| Hip X-ray, 2-3 views An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures. |
35 | $28 | $239 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
35 | $99 | $304 |
| MRI of lower spine, without contrast A magnetic resonance imaging scan of the lower spinal canal that does not use contrast dye to create detailed images of the spine. |
30 | $72 | $1,115 |
| New patient office visit, 15-29 minutes An initial office visit for a new patient lasting 15 to 29 minutes. This code is used when the total time spent on the date of the encounter meets this duration threshold. |
21 | $49 | $228 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
19 | $21 | $244 |
| Elbow to finger cast application Application of a cast extending from the elbow to the fingers to immobilize the arm. |
17 | $69 | $397 |
| Adult short arm fiberglass cast supplies Materials used to apply a short arm cast made of fiberglass for patients aged 11 and older. |
17 | $18 | $35 |
| Arthroscopic joint procedure A surgical procedure performed on a joint using an endoscope, which is a small camera inserted into the joint space. |
15 | $463 | $2,800 |
| Pelvis X-ray, 1-2 views An X-ray imaging test of the pelvic area using one to two different angles to visualize the bones and joints. |
14 | $15 | $216 |
| Initial hospital admission, low complexity Initial hospital inpatient or observation care for a new patient involving straightforward or low-level medical decision making, with at least 40 minutes total time on the date of the encounter. |
13 | $58 | $289 |
| Arthroscopic shoulder surgery for bone shaving and ligament repair A minimally invasive procedure using a small camera to shave part of the shoulder bone and repair a ligament. |
12 | $139 | $1,000 |
| Arthroscopic rotator cuff repair A minimally invasive surgery to repair torn shoulder tendons using a small camera and instruments inserted through tiny incisions. |
12 | $856 | $5,000 |
| X-ray of lower and sacral spine, minimum 6 views An X-ray imaging test that captures at least six views of the lower back and sacral spine to evaluate bone structure and alignment. |
11 | $35 | $371 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
The majority of payments (86%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in orthopaedic hand surgery physician and does not inherently indicate bias, but patients may wish to be aware.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Ahn is a clinical cardiology specialist, with above-average Medicare volume (top 14% in IL), with speaking/promotional industry engagement, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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