Dr. John Linn, MD
What this data tells you about Dr. Linn
Dr. John Linn is a surgery specialist in Glenview, IL, with 18 years of NPI registration. Based on federal Medicare data, Dr. Linn performed 850 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Linn received a total of $167,643 from 12 pharmaceutical and/or device companies across 238 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Linn 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 — 2023
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 |
|---|---|---|---|
| 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. |
160 | $63 | $131 |
| Skin graft, each additional 30 sq cm This procedure involves transferring skin to repair a wound. The code applies to each additional 30 square centimeters of skin graft used beyond the initial amount. |
123 | $186 | $569 |
| Endoscopic groin hernia repair A surgical procedure to repair a groin hernia using an endoscope, which allows the surgeon to view and operate through small incisions. |
91 | $430 | $2,033 |
| 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. |
90 | $55 | $76 |
| 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. |
86 | $29 | $43 |
| 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. |
52 | $35 | $61 |
| 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. |
42 | $69 | $162 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
30 | $97 | $246 |
| Laparoscopic gallbladder removal Surgical removal of the gallbladder using a small camera and instruments inserted through tiny incisions in the abdomen. |
24 | $615 | $2,528 |
| Initial repair of abdominal hernia, 3-10 cm Surgical repair of an abdominal hernia where the tissue is trapped, measuring between 3 and 10 centimeters in length. |
24 | $563 | $1,870 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
23 | $43 | $93 |
| Skin graft repair, 30.1-60.0 sq cm A surgical procedure to repair a wound by transferring skin from one area to another. This code applies to grafts covering an area between 30.1 and 60.0 square centimeters. |
22 | $587 | $2,067 |
| Endoscopic hernia repair A surgical procedure to repair a hernia using an endoscope, which is a thin tube with a camera inserted through small incisions. |
22 | $508 | $2,746 |
| Muscle graft to trunk A surgical procedure involving the creation and placement of a muscle graft onto the trunk. |
20 | $1,016 | $4,859 |
| Initial repair of large abdominal hernia (>10 cm) Surgical repair of an abdominal hernia that is larger than 10 centimeters. This procedure involves fixing the initial entrapment of tissue within the abdominal wall defect. |
15 | $727 | $2,556 |
| Initial repair of sliding abdominal hernia, 3-10 cm Surgical repair of a sliding hernia in the abdomen that measures between 3 and 10 centimeters in length. |
14 | $333 | $1,433 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
12 | $112 | $293 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
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 ›
Geographic Context
3.9 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Linn is a clinical cardiology specialist, with above-average Medicare volume (top 10% in IL), with 18 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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This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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