Internal Medicine, Infectious Disease · O Fallon, MO
NPI
1700995339
Since 2006
Specialty
Internal Medicine, Infectious Disease
Code 207RI0200X
Group practices
2
Medicare group memberships
Hospitals
3
Hospital affiliations
20 Progress Point Pkwy Ste 206
O Fallon, MO, 63368
Phone (636) 344-2014
Groups this clinician bills Medicare through
Medicare paid, 2024
$42K
583 services
Medicare patients, 2024
93
Average age 72
Drug cost, 2024
$195K
659 prescriptions
Company payments, 2023
$16.32
From 1 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by David A Janssen was code 99232 (hospital e&m - subsequent), 394 times for 64 patients. In total David A Janssen billed 583 services in 8 codes, and Medicare paid $42K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2025-10-21.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99232 Hospital E&M - Subsequent | Facility | 394 | 64 | $59.90 | $24K |
| 99223 Hospital E&M - Initial | Facility | 62 | 57 | $130.47 | $8,089 |
| 99214 Office E&M - Established | Office | 52 | 34 | $86.13 | $4,479 |
| 99231 Hospital E&M - Subsequent | Facility | 33 | 17 | $37.80 | $1,248 |
| 99233 Hospital E&M - Subsequent | Facility | 30 | 21 | $90.16 | $2,705 |
By year: 2022 $86K for 1,216 services; 2023 $62K for 835 services; 2024 $42K for 583 services.
Medicare prescription drug claims, 2024
In 2024, the drug David A Janssen prescribed most often to Medicare patients was Cefuroxime (Cefuroxime Axetil), with 96 prescriptions and refills. In total David A Janssen wrote 659 Medicare prescriptions that cost $195K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Cefuroxime Cefuroxime Axetil | 96 | 122 | 15 | $4,350 |
| Ceftriaxone Ceftriaxone Sodium | 67 | 67 | 15 | $5,973 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 62 | 79 | 21 | $1,428 |
| Ertapenem Ertapenem Sodium | 48 | 48 | 11 | $18K |
| Doxycycline Hyclate Generic | 38 | 38 | Under 11 | $1,002 |
| Vancomycin Hcl Generic | 29 | 49 | Under 11 | $4,350 |
| Ciprofloxacin Hcl Generic | 28 | 48 | Under 11 | $674 |
| Levofloxacin Generic | 24 | 26 | Under 11 | $57.32 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 23 | 38 | Under 11 | $302 |
| Piperacillin-Tazobactam Piperacillin Sodium/Tazobactam | 20 | 20 | Under 11 | $3,176 |
| Valacyclovir Valacyclovir Hcl | 17 | 27 | Under 11 | $1,083 |
| Minocycline Hcl Generic | 17 | 17 | Under 11 | $439 |
| Voriconazole Generic | 14 | 14 | Under 11 | $2,099 |
| Moxifloxacin Hcl Generic | 12 | 12 | Under 11 | $5,329 |
| Sodium Chloride 0.9 % Sodium Chloride | 11 | 11 | Under 11 | $238 |
Brand drugs: 57 claims; generic drugs: 602 claims.
Money and other things of value reported by the companies
In 2023, drug and medical device companies paid David A Janssen $16.32 ($16.32 in general payments such as food, travel and fees) from 1 company. The largest payer was Shionogi Inc with $16.32.
| Company | Payments | Amount |
|---|---|---|
| Shionogi Inc 4507.T | 1 | $16.32 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.