David Knowles, MD
NPI 1881699908 · Urology Physician · Mount Vernon, IL
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Knowles, MD is a Urology Physician provider in Mount Vernon, IL (NPI 1881699908).
Provider details
- NPI number
- 1881699908
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036114878 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,705 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Urinalysis, Manual Test81002 | 1,622 | $3 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 665 | $85 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 658 | $122 |
| Diagnostic Exam of Bladder and Urethra Using an Endoscope52000 | 249 | $221 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 167 | $10 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 163 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 1,328 | 424 |
| Finasteride | 1,030 | 291 |
| Mirabegronbrand: Myrbetriq | 179 | 44 |
| Dutasteride | 178 | 60 |
| Testosterone Cypionate | 171 | 53 |
| Testosterone | 164 | 37 |
| Solifenacin Succinate | 150 | 62 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,032 across 52 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-15
- Last updated
- 2017-04-20
Frequently asked questions
- What is David Knowles's NPI number?
- David Knowles's National Provider Identifier (NPI) is 1881699908, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Knowles's specialty?
- David Knowles is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is David Knowles located?
- David Knowles's practice location on file with NPPES is 4109 S Water Tower Pl, Mount Vernon, IL 62864-6293.
- What is David Knowles's phone number?
- The practice phone number listed in the NPPES registry for David Knowles is (618) 244-4060.
- Does David Knowles accept Medicare?
- David Knowles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Knowles's NPI active?
- Yes — David Knowles's NPI (1881699908) is active in the NPPES registry as of the last update on 2017-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.