Darville Judson Knowles, M.D.
Specialist · Las Vegas, NV
Darville Judson Knowles, M.D. is a specialist with a practice address in Las Vegas, Nevada, and NPI 1346382850, issued on Feb 12, 2007. Check the license (Nevada 4481, as entered in NPPES) with the Nevada board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Darville Judson Knowles
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- 4481 NV
Self-reported in NPPES; status is on the state search - Practice location
- 3006 S Maryland Pkwy, Las Vegas, NV 89109
- Phone
- (702) 369-1212
- Enumerated
- Feb 12, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (702) 369-5454
- Entity
- Type 1 · individual
8 nearest specialist records → All 276 in Nevada → Look up another NPI →
Also registered at 3006 S Maryland Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Darville Judson Knowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Nevada board licenses this profession
Search for license 4481Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average specialist in 2024
262 Medicare Part D claims for 43 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Hydrochlorothiazide26 claims
- Amlodipine Besylate17 claims
- Atorvastatin Calcium17 claims
- Simvastatin11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Darville Judson Knowles among 276 specialist records in Nevada
Darville Judson Knowles, M.D. is one of 276 specialist records with a practice address in Nevada. 26% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 35% of them.
- NPI issued2007 · 35% of these records are older, 52% newer
- In a Medicare fileYes · 26% of these records are
- In the CMS Doctors and Clinicians fileNo · 15% of these records are
- Record last updated2007 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Nevada
There are 276 specialist records in Nevada.
All 276 in Nevada → Every provider in Las Vegas → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Miriam Adelson, M.D.Las Vegas, NV 891091225309735
- Michael Aigbe, M.D.Las Vegas, NV 891091962451047
- Daniel Broeske, M.D.Las Vegas, NV 891091013901750
- Golam Choudhury, M.D.Las Vegas, NV 891091467508713
- George Ganesan, M.D.Las Vegas, NV 891091457332538
- Marsha Goodhead, MDLas Vegas, NV 891091437119435
- Osama Haikal, M.D.Las Vegas, NV 891091245348762
- Donald Johns, M.D.Las Vegas, NV 891091780615013
Common questions
What is Darville Judson Knowles, M.D.'s NPI number?
Darville Judson Knowles, M.D.'s National Provider Identifier (NPI) is 1346382850, issued on Feb 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Darville Judson Knowles, M.D. located?
The NPPES record lists a practice address at 3006 S Maryland Pkwy, Las Vegas, NV, 89109. Phone: (702) 369-1212. Providers update this record themselves, so call before visiting.
How can I verify Darville Judson Knowles, M.D.'s license?
NPPES lists Nevada license number 4481, as entered by the provider. Search the Nevada board that licenses this profession; the NPPES record confirms identity only.
How much does Darville Judson Knowles, M.D. prescribe under Medicare Part D?
In 2024, Darville Judson Knowles, M.D. had 262 Medicare Part D claims for 43 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.