Doctor profile · Federal record
Dr. David Knowles, MD
Urology Physician (CMS: Urology) · Mount Vernon, IL
- NPI 1881699908
- Accepts Medicare
- 28 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
4109 S Water Tower Pl
Mount Vernon, IL 628646293
(618) 244-4060
fax (618) 205-5817
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- April 20, 2017
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 208800000X — NUCC code
- State license (1)
- Illinois #036114878
- Medicaid
- IL #036114878
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1881699908. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
28,521
Distinct HCPCS
10
Medicare allowed
$586,322
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J1071 |
Injection, testosterone cypionate, 1 mg | 15,721 | 13 | $0 | |
J0897 |
Injection, denosumab, 1 mg | 7,321 | 19 | $23 | |
81002 |
Urinalysis, manual test | 1,523 | 989 | $3 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 626 | 415 | $86 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 625 | 494 | $122 | |
J9201 |
Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg | 341 | 14 | $4 | |
J9217 |
Leuprolide acetate (for depot suspension), 7.5 mg | 307 | 45 | $172 | |
96372 |
Injection of drug or substance under skin or into muscle | 233 | 49 | $13 | |
52000 |
Diagnostic exam of bladder and urethra using an endoscope | 216 | 188 | $224 | |
51798 |
Ultrasound measurement of bladder capacity after voiding | 165 | 149 | $10 |
In context: peer comparison
Among 1 peers in Mount Vernon Urology Physician, average services per provider: 648. This provider delivers 44× the peer median.Open Payments
Industry payments received
All-time total
$1,032
Transactions
52
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Astellas Pharma US INC | 6 | $208.80 | |
| Janssen Biotech, INC. | 10 | $193.85 | |
| Sumitomo Pharma America, INC. | 12 | $179.93 | |
| Pfizer INC. | 5 | $97.08 | |
| Tolmar, INC. | 3 | $59.59 | |
| Endo USA, INC. | 3 | $55.71 | |
| Abbvie INC. | 3 | $54.82 | |
| Novartis Pharmaceuticals Corporation | 2 | $42.10 | |
| Bayer Healthcare Pharmaceuticals INC. | 2 | $36.33 | |
| Progenics Pharmaceuticals, INC. | 1 | $22.48 | |
| Endo Pharmaceuticals INC. | 1 | $21.08 | |
| Merck Sharp & Dohme LLC | 1 | $16.28 | |
| Urogen Pharma, INC. | 1 | $15.79 | |
| Antares Pharma, INC. | 1 | $14.03 | |
| Teleflex LLC | 1 | $14.02 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,455
Patients
1,265
Total drug cost
$322,434
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Tamsulosin Hcl | Generic | 1,191 | 368 | $36,090 |
| Finasteride | Generic | 922 | 280 | $18,220 |
| Myrbetriq (Mirabegron) | Brand | 165 | 46 | $144,144 |
| Cephalexin | Generic | 154 | 108 | $1,982 |
| Dutasteride | Generic | 148 | 47 | $5,832 |
| Testosterone Cypionate | Generic | 139 | 44 | $7,569 |
| Levofloxacin | Generic | 112 | 88 | $1,652 |
| Solifenacin Succinate | Generic | 110 | 32 | $9,075 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 108 | 91 | $889 |
| Testosterone | Generic | 104 | 26 | $25,316 |
Frequently asked questions
What is Dr. David Knowles's medical specialty?
Dr. David Knowles practices Urology Physician in Mount Vernon, IL.
Where does Dr. David Knowles practice?
Dr. David Knowles practices at 4109 S Water Tower Pl, Mount Vernon, IL 628646293. Office phone: 6182444060.
What is Dr. David Knowles's NPI?
Dr. David Knowles's National Provider Identifier (NPI) is 1881699908, issued by NPPES.
Does Dr. David Knowles accept Medicare assignment?
Yes. Dr. David Knowles accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Knowles commonly perform?
Top Medicare-reported procedures in 2023: Injection, testosterone cypionate, 1 mg (HCPCS J1071); Injection, denosumab, 1 mg (HCPCS J0897); Urinalysis, manual test (HCPCS 81002). Source: CMS Medicare Physician & Other Practitioners file.