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- 4109 S Water Tower Pl, Mount Vernon, IL 62864
About Dr. Knowles
Based in Mount Vernon, IL, David R. Knowles, MD is listed in the NPI registry under urology. David graduated from Columbia University College of Physicians and Surgeons in 1998. According to Medicare claims data, David cared for 3,215 Medicare patients across 23,578 services. The services billed most often include injection, testosterone cypionate, 1 mg, bcg live intravesical instillation, 1 mg, and urinalysis, manual test. NPI 1881699908 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (618) 244-4060
- Email not available
Practice Locations
4109 S WATER TOWER PL
Mount Vernon, IL 62864
Conditions Commonly Evaluated or Treated
Within Urology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Erectile dysfunction
- Kidney stones
- Overactive bladder
- Prostate cancer
- Urinary incontinence in women
- UTI
Bladder and urethra
- Bladder cancer
- Interstitial cystitis and bladder pain syndrome
- Urethral stricture
Kidney and ureter
Male reproductive and sexual health
- Hydrocele
- Male infertility
- Peyronie's disease
- Testicular and scrotal pain
- Testicular cancer
- Testicular torsion
- Testosterone deficiency
- Varicocele
Prostate
- Elevated PSA
- Enlarged prostate
- Prostatitis
Urinary symptoms and infection
- Blood in the urine
- Kidney infection
- Painful urination
- Recurrent urinary tract infections
- Urinary retention
Bladder & Urination
Kidney health
- Kidney Cyst
Men's health
- Chronic Pelvic Pain in Men
Urinary symptoms
- Waking Up to Pee
Procedures & services
Most searched procedures
- Circumcision
- Cystoscopy
- Kidney stone removal
- Prostatectomy
- Vasectomy
Office diagnosis
- MRI-targeted fusion prostate biopsy
- Prostate biopsy
Bladder procedures
- Artificial Urinary Sphincter Implant
- Bladder Botox Injection
- Bladder instillation therapy
- Radical bladder removal
- Sacral neuromodulation
- Sling surgery for stress incontinence
- Transurethral resection of bladder tumor
Diagnostic imaging
- Prostate Ultrasound
Kidney & ureter procedures
- Ureteral Stent Removal
Kidney and ureter surgery
- Partial kidney removal
- Radical kidney removal
Male reproductive
- Hydrocele repair
- Penile implant surgery
- Surgical correction of penile curvature
- Testicle removal
- Varicocele repair
Prostate
- GreenLight Laser Prostate Surgery
Prostate procedures
- HoLEP Laser Prostate Surgery
- Prostatic urethral lift
- Rezum Water Vapor Therapy
- Transurethral resection of the prostate
Stone procedures
- Ureteral stent placement
Procedures Most Often Billed to Medicare
23,578 services · 3,215 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of bladder and urethra using an endoscope | Procedure | 52000 |
249 | More than most peers in Urology |
| Ultrasound measurement of bladder capacity after voiding | Procedure | 51798 |
167 | As often as other peers in Urology |
| Instillation of anti-cancer drug into bladder | Procedure | 51720 |
115 | More than most peers in Urology |
| Biopsy of prostate gland | Procedure | 55700 |
50 | More often than most peers in Urology |
| Crushing of stone of ureter with insertion of stent using an endoscope | Procedure | 52356 |
40 | More than most peers in Urology |
| Simple removal of foreign body, stone, or stent in urethra or bladder using an endoscope | Procedure | 52310 |
37 | More than most peers in Urology |
| Simple bladder irrigation and/or instillation | Procedure | 51700 |
36 | More often than most peers in Urology |
| Imaging of urinary tract following injection of a contrast agent | Imaging | 74420 |
88 | More than most peers in Urology |
| Ultrasound scan of pelvic region through rectum | Imaging | 76872 |
60 | More often than most peers in Urology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
163 | More often than most peers in Urology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Columbia University College of Physicians and Surgeons 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1998 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of bladder and urethra using an endoscope 8
Providers in IL who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Knowles?
Dr. Knowles is an urologist in Mount Vernon, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Urology”.
NPI registry
What is Dr. Knowles's address?
Dr. Knowles is listed at 4109 S Water Tower Pl, Mount Vernon, IL 62864. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Knowles?
The number on file is (618) 244-4060. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Knowles's NPI number?
Dr. Knowles's National Provider Identifier is 1881699908. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Knowles train?
Dr. Knowles attended Columbia University College of Physicians and Surgeons, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Knowles been practicing?
Dr. Knowles has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Knowles perform?
According to Medicare billing data, Dr. Knowles performs procedures including diagnostic exam of bladder and urethra using an endoscope, ultrasound measurement of bladder capacity after voiding and instillation of anti-cancer drug into bladder; reads or performs imaging such as imaging of urinary tract following injection of a contrast agent and ultrasound scan of pelvic region through rectum; provides treatments such as injection of drug or substance under skin or into muscle and administration of hormonal anti-neoplastic chemotherapy under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Knowles confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Knowles. If this is you, claiming it is free.
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