Urology · Mount Vernon, IL
NPI
1881699908
Since 2005
Specialty
Urology
Code 208800000X
Group practices
1
Medicare group memberships
Hospitals
5
Hospital affiliations
4109 S Water Tower Pl
Mount Vernon, IL, 62864
Phone (618) 244-4060
Groups this clinician bills Medicare through
Medicare paid, 2024
$390K
24,707 services
Medicare patients, 2024
1,182
Average age 76
Drug cost, 2024
$1.3M
4,634 prescriptions
Company payments, 2025
$970
From 19 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by David R Knowles was code J1071 (injection, testosterone cypionate, 1 mg), 14,165 times for 13 patients. In total David R Knowles billed 24,707 services in 90 codes, and Medicare paid $390K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2017-04-20.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| J1071 Injection, testosterone cypionate, 1 mg | Office | 14,165 | 13 | $0.02 | $235 |
| J9030 Bcg live intravesical instillation, 1 mg | Office | 2,900 | 11 | $2.30 | $6,663 |
| 81002 Clinical Chemistry | Office | 1,622 | 1,045 | $3.38 | $5,480 |
| J0897 Injection, denosumab, 1 mg | Office | 1,380 | 13 | $20.69 | $29K |
| 99213 Office E&M - Established | Office | 665 | 454 | $60.75 | $40K |
| 99214 Office E&M - Established | Office | 658 | 518 | $79.35 | $52K |
| J9217 Leuprolide acetate (for depot suspension), 7.5 mg | Office | 316 | 39 | $138.09 | $44K |
| J9201 Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg | Office | 270 | 13 | $2.39 | $646 |
| 52000 Cystourethroscopy | Office | 249 | 204 | $159.05 | $40K |
| 51798 Ultrasound - Nonspecific | Office | 167 | 146 | $7.16 | $1,196 |
| 96372 Injection Administration | Office | 163 | 31 | $9.49 | $1,547 |
| 99215 Office E&M - Established | Office | 139 | 116 | $129.74 | $18K |
| 51720 Chemotherapy Administration | Office | 115 | 20 | $62.55 | $7,193 |
| J1580 Injection, garamycin, gentamicin, up to 80 mg | Office | 114 | 56 | $1.80 | $205 |
| 99441 Telephone Services | Office | 109 | 86 | $37.32 | $4,068 |
By year: 2022 $572K for 36,274 services; 2023 $522K for 32,674 services; 2024 $390K for 24,707 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 81002 Clinical Chemistry | 1,622 | 1,045 | $3.38 | $5,480 |
Medicare prescription drug claims, 2024
In 2024, the drug David R Knowles prescribed most often to Medicare patients was Tamsulosin Hcl, with 1,328 prescriptions and refills. In total David R Knowles wrote 4,634 Medicare prescriptions that cost $1.3M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Tamsulosin Hcl Generic | 1,328 | 3,501 | 424 | $26K |
| Finasteride Generic | 1,030 | 2,746 | 291 | $15K |
| Myrbetriq Mirabegron | 179 | 297 | 44 | $131K |
| Dutasteride Generic | 178 | 510 | 60 | $5,707 |
| Testosterone Cypionate Generic | 171 | 375 | 53 | $6,749 |
| Testosterone Generic | 164 | 214 | 37 | $33K |
| Solifenacin Succinate Generic | 150 | 333 | 62 | $7,367 |
| Cephalexin Generic | 137 | 184 | 84 | $1,168 |
| Levofloxacin Generic | 119 | 121 | 92 | $957 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 111 | 111 | 81 | $666 |
| Potassium Citrate Er Potassium Citrate | 109 | 253 | 35 | $11K |
| Gemtesa Vibegron | 92 | 162 | 26 | $77K |
| Clotrimazole-Betamethasone Clotrimazole/Betamethasone Dip | 63 | 70 | 30 | $1,791 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 57 | 57 | 37 | $326 |
| Hydrochlorothiazide Generic | 56 | 132 | 14 | $283 |
Brand drugs: - claims; generic drugs: 4,235 claims; opioid claims: 139.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid David R Knowles $970 ($970 in general payments such as food, travel and fees) from 19 companies. The largest payer was Janssen Biotech, Inc. with $163.
| Company | Payments | Amount |
|---|---|---|
| Janssen Biotech, Inc. JNJ | 9 | $163 |
| Pfizer Inc. PFE | 5 | $91.31 |
| Novartis Pharmaceuticals Corporation NVS | 4 | $90.22 |
| Bayer Healthcare Pharmaceuticals Inc. BAYN.DE | 4 | $73.65 |
| Ferring Pharmaceuticals Inc. | 3 | $72.02 |
| Olympus America Inc. | 3 | $62.59 |
| Sumitomo Pharma America, Inc. 4506.T | 3 | $60.99 |
| Tolmar, Inc. | 3 | $59.1 |
| Abbvie Inc. ABBV | 3 | $53.8 |
| Astellas Pharma US Inc 4503.T | 2 | $43.36 |
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.