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Dr. David R. Knowles, MD
NPI1881699908PAC ID5991719858
- Medicare services, 2024
- 23,850
- Medicare patients, 2024
- 1,182
- Part D claims, 2024
- 4,634
- Publications
- 1
- MIPS score, 2024
- 75
- Practice address
- 4109 S Water Tower Pl, Mount Vernon, IL 62864
- Practice phone
- Call (618) 244-4060
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advanced Urologic Surgeons
Mount Vernon, Illinois
Find Dr. Knowles' professional email, personal email and mobile number
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Dr. David R. Knowles is a urologist in Mount Vernon, Illinois
Dr. Knowles practices at Advanced Urologic Surgeons in Mount Vernon, Illinois.
Dr. Knowles' NPI, 1881699908, was assigned on June 15, 2005. Dr. Knowles graduated from Columbia University College of Physicians and Surgeons in 1998. Dr. Knowles holds Illinois license 036114878.
NPI and contact details
- NPI
- 1881699908NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991719858
- NPI enumeration date
- June 15, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (618) 244-4060
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David R. Knowles practices at Advanced Urologic Surgeons in Mount Vernon, Illinois
Dr. Knowles' primary practice is Advanced Urologic Surgeons, at 4109 S Water Tower Pl, Mount Vernon, IL 62864 in Jefferson County. The practice phone is (618) 244-4060.
- Advanced Urologic Surgeons4109 S Water Tower Pl, Mount Vernon, IL 62864 · Jefferson CountyPhone(618) 244-4060
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David R. Knowles is affiliated with 7 sites of care and 1 medical group
Dr. Knowles' primary practice is Advanced Urologic Surgeons in Mount Vernon, Illinois. Dr. Knowles is also affiliated with SSM Health Good Samaritan Hospital - Mt. Vernon. The medical group on file is Advanced Urologic Surgeons. Dmand AI also links Dr. Knowles to 4 more hospitals and 1 group practice or clinic, each named with a free account.
Advanced Urologic SurgeonsPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David R. Knowles' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knowles practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advanced Urologic Surgeons | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David R. Knowles is one of 513 urologists in Illinois
Urology is Dr. Knowles' primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Knowles is licensed in Illinois.
Specialties and state licenses
- Urology, IllinoisPrimary
Urologists near Dr. Knowles
Counts of urologists with a Dmand AI profile, by place and practice. Each opens the list.
513urologists in Illinois
3urologists in Mount Vernon
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David R. Knowles billed Medicare for 23,850 services in 2024
CMS data shows 23,850 Medicare services from Dr. Knowles across 38 procedure codes in 2024, for 1,182 Medicare patients. Medicare paid $333,578 for them.
Medicare services, 202423,850
Medicare patients1,182
Paid by Medicare$333,578
Procedure codes38
Dr. Knowles' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 23,8222024: 19,14520%
- Office and hospital visits
- 2023: 1,7152024: 1,8136%
- Lab and pathology
- 2023: 1,5232024: 1,6227%
- Surgery
- 2023: 8622024: 8165%
- Tests and treatments
- 2023: 3412024: 26921%
- Imaging
- 2023: 2072024: 18511%
- Other services
- 2023: 512024: 0100%
Where Dr. Knowles' Medicare services took place, 2024
- In an office23,49399%
- In a facility3571%
Dr. Knowles compared with the Illinois median for urologists, 2024
- Dr. Knowles
- Illinois median
- Medicare services
- 23,850vs 1,32318.0 times
- Medicare patients
- 1,182vs 4902.4 times
- Part D claims
- 4,431vs 35812.4 times
Medians across 498 urologists in Illinois with Dmand AI profiles that report each measure.
Dr. Knowles' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knowles and other urologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David R. Knowles treated 1,182 Medicare patients in 2024, average age 76
CMS counts 1,182 Medicare patients who saw Dr. Knowles in 2024. The largest group is 65 to 74, with 536 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Knowles' median patient age at 71, with 26% women.
Medicare patients, 20241,182
Average age76
Average risk score1.23
Also on Medicaid6%
Dr. Knowles' Medicare patients by age, 2024
Dr. Knowles' Medicare patients by sex, 2024
- Women21919%
- Men96381%
Chronic conditions among Dr. Knowles' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Cancer37%
- Diabetes36%
- Ischemic heart disease35%
- Chronic kidney disease32%
- Atrial fibrillation23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Knowles' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women26%
- Men74%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David R. Knowles wrote 4,634 Medicare Part D claims in 2024
In 2024, Dr. Knowles wrote 4,634 Medicare Part D claims for 990 patients. 91% of them were for generic drugs. CMS names the drug for 4,431 of them, across 36 drugs with 11 or more claims each, at $1,193,029 in total drug cost. In 2023, CMS named 3,822 claims across 33 drugs.
Part D claims, 20244,634
Drugs named by CMS36
Total drug cost$1.2M
Part D patients990
Dr. Knowles' Part D claims by kind of drug, 2024
- Generic4,235 claims91%
- Brand-name and other399 claims9%
Dr. Knowles' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Knowles' Part D claims, 2024
- Opioids3%139 of 4,634 claims
- Antibiotics9%423 of 4,634 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,8222024: 4,43116%
Drugs named by CMS: 36 in 2024, 33 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. David R. Knowles scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Knowles for performance year 2024, reported as part of a group. Dr. Knowles accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Knowles as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- MIPS final score, 2024
- 75 of 100
Prostate resection: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. David R. Knowles has 1 publication on record
Dmand AI links 1 paper to Dr. Knowles in 2013.
Papers1
Recent publications by Dr. Knowles
See who Dr. Knowles researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Knowles works with, so you can find a warm path to the right urologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David R. Knowles received $11,269 in industry payments from 2016 to 2025
CMS Open Payments shows 617 general payments to Dr. Knowles from 49 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Astellas Pharma US Inc paid the most, $2,740.
General payments to Dr. Knowles by program year, 2016 to 2025
General payments to Dr. Knowles by kind, 2016 to 2025
$11.3Kin total
- Food and beverage$10,28191%
- Education$9889%
Companies that paid Dr. Knowles the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David R. Knowles graduated from Columbia University College of Physicians and Surgeons
Dr. Knowles graduated from Columbia University College of Physicians and Surgeons in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David R. Knowles's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. David R. Knowles
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. David R. Knowles' NPI number?
Dr. David R. Knowles' NPI number is 1881699908. It was assigned on June 15, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. David R. Knowles?
Dr. David R. Knowles is a urologist in Mount Vernon, Illinois. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. David R. Knowles practice?
Dr. Knowles practices at 4109 S Water Tower Pl, Mount Vernon, IL 62864. Dr. Knowles' primary practice is Advanced Urologic Surgeons in Mount Vernon, Illinois. Dmand AI also links Dr. Knowles to 4 hospitals and 1 group practice or clinic.
What is Dr. David R. Knowles' office phone number?
The practice phone on file for Dr. Knowles is (618) 244-4060.
What is Dr. David R. Knowles' medical license number?
Dr. Knowles holds Illinois license 036114878.
Which hospitals is Dr. David R. Knowles affiliated with?
Dr. Knowles is affiliated with SSM Health Good Samaritan Hospital - Mt. Vernon. Dmand AI links Dr. Knowles to 4 more hospitals.
What medical group is Dr. David R. Knowles part of?
Dr. Knowles is linked to Advanced Urologic Surgeons.
Does Dr. David R. Knowles accept Medicare?
Yes. CMS data shows Dr. Knowles billed Medicare for 23,850 services in 2024, and Dr. Knowles accepts Medicare assignment.
Does Dr. David R. Knowles offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Knowles as offering telehealth services.
What is Dr. David R. Knowles' MIPS score?
Dr. Knowles' MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. David R. Knowles see?
CMS counts 1,182 Medicare patients who saw Dr. Knowles in 2024, with an average age of 76.
What services does Dr. David R. Knowles bill to Medicare?
In 2024, Dr. Knowles' most billed Medicare services were injected or infused drug (J1071), injected or infused drug (J9030) and lab and pathology test (81002).
Where did Dr. David R. Knowles go to medical school?
Dr. Knowles graduated from Columbia University College of Physicians and Surgeons in 1998.
What drugs does Dr. David R. Knowles prescribe most?
In 2024 Medicare Part D data, Dr. Knowles' most prescribed drugs by claims were Tamsulosin HCl, Finasteride and Myrbetriq.
Has Dr. David R. Knowles received payments from drug or device companies?
CMS Open Payments shows $11,269 in general payments to Dr. Knowles from 49 companies from 2016 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Dr. David R. Knowles been practicing?
Dr. Knowles graduated from medical school in 1998, 28 years ago.
Does Dr. David R. Knowles do research?
Dmand AI links 1 publication to Dr. Knowles.
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