Physician
Walshauser, Mark
Walshauser, Mark was paid $396K by Medicaid between Jan 2018 and Nov 2024, across 29 billing codes. Its largest line is 99214, doctor's office visit, returning patient (more involved) — 34% of everything it billed.
33Billing provider infoWALSHAUSER, MARK
O FALLON, IL 62269
O FALLON, IL 62269
33aNPI1306020664assigned 12/21/2007
33bProvider typeInternal Medicine Physician
28Total paid$396K
24GClaims22,742
24DCodes billed29
24AFirst – last monthJan 2018 – Nov 2024
Compared with peers
Next to other Internal Medicine Physician providers in Illinois
Rank by total paid#168 of 3,722
Median peer was paid$26K
This provider vs. median15×
Peers share this provider's primary NPPES type and state. Size alone says nothing about billing quality: a big agency or a hospital system is expected to sit far above the median.
Box 24A · Dates of service
Paid by month
Paid that monthNov–Dec 2024: claims still arriving when the file was cut, so these months run low for every provider
By year, as a table
| Year | Claims | Paid | |
|---|---|---|---|
| 2018 | 1,656 | $33K | |
| 2019 | 5,449 | $92K | |
| 2020 | 4,149 | $71K | |
| 2021 | 2,717 | $53K | |
| 2022 | 3,647 | $59K | |
| 2023 | 3,171 | $58K | |
| 2024incomplete | 1,953 | $30K |
Box 24 · Service lines
What it billed for
| Code | Service | Share | Claims | Bene. records | Paid |
|---|---|---|---|---|---|
| 99214 | Doctor's office visit, returning patient (more involved)Office or other outpatient visit for the evaluation and management of an established patient, moderate complexity | 34% | 4,226 | 3,237 | $135K |
| 96413 | Chemotherapy administration, intravenous infusion; up to 1 hour, single or initial substance | 20% | 2,215 | 811 | $81K |
| 80053 | Comprehensive metabolic panel | 8.0% | 3,033 | 2,196 | $32K |
| 96375 | Therapeutic injection; each additional sequential IV push | 4.8% | 901 | 373 | $19K |
| 96367 | 4.3% | 664 | 203 | $17K | |
| 99213 | Doctor's office visit, returning patient (routine)Office or other outpatient visit for the evaluation and management of an established patient, low complexity | 4.3% | 651 | 577 | $17K |
| 99215 | Doctor's office visit, returning patient (complex)Prolong outpt/office vis | 4.0% | 422 | 295 | $16K |
| J1756 | Injection, iron sucrose, 1 mg | 3.8% | 396 | 135 | $15K |
| 85027 | 3.1% | 2,110 | 1,463 | $12K | |
| 96365 | Intravenous infusion, for therapy, prophylaxis, or diagnosis; initial, up to 1 hour | 3.0% | 402 | 135 | $12K |
| 96374 | Therapeutic, prophylactic, or diagnostic injection; intravenous push, single or initial substance | 2.1% | 334 | 138 | $8K |
| 85007 | 1.9% | 2,102 | 1,463 | $7K |
17 more codes
| 83615 | 1.6% | 1,220 | $6K | |
| 85025 | Blood count; complete (CBC), automated, and automated differential WBC count | 1.1% | 714 | $4K |
| 96372 | Therapeutic, prophylactic, or diagnostic injection; subcutaneous or intramuscular | <1% | 525 | $4K |
| 83735 | <1% | 298 | $2K | |
| 82728 | <1% | 215 | $2K | |
| 83550 | <1% | 201 | $2K | |
| 83540 | <1% | 201 | $1K | |
| J1200 | Injection, diphenhydramine hcl, up to 50 mg | <1% | 1,231 | $815.23 |
| 99204 | Doctor's office visit, new patient (more involved) | <1% | 13 | $746.42 |
| 71260 | Computed tomography, thorax, diagnostic; with contrast material | <1% | 16 | $744.08 |
| 82607 | <1% | 28 | $336.00 | |
| 82746 | <1% | 29 | $320.88 | |
| 85045 | <1% | 120 | $315.93 | |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | <1% | 317 | $261.09 |
| J3420 | Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | <1% | 111 | $179.54 |
| J3490 | Unclassified drugs | <1% | 33 | $26.53 |
| 36415 | Collection of venous blood by venipuncture | <1% | 14 | $3.99 |
Claims and beneficiary counts add up across code × month rows, so one patient seen every month counts many times. Rows with fewer than 12 claims are suppressed by HHS, so small lines can be missing.