Registry data as of Aug 27, 2026

James Duke, MD

Urology Physician · Victorville, CA

James Duke, MD is a urology physician with a practice address in Victorville, California, and NPI 1871646851, issued on Jan 21, 2007. Check the license (California G41899, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1871646851
Name
James Duke
Credential
MD
Primary taxonomy
Urology Physician 208800000X
License number
G41899 CA
Self-reported in NPPES; status is on the state search
Practice location
15366 11TH St, Victorville, CA 92395
Phone
(760) 962-1884
Enumerated
Jan 21, 2007
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 15366 11TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Wonsik Bollmann, D.P.MPodiatrist1578556742
  2. Bonnie Chi-Lum, M.D.Public Health & General Preventive Medicine Physician1467598219
  3. Fahed Hattar, DDSDentist1770677858
  4. Bradley Herrick, M.D.Specialist1700035235
  5. Cheng Hsieh, M.D.Obstetrics & Gynecology Physician1558372649
  6. Jennifer Konior, PA-CPhysician Assistant1336399252

Verify James Duke in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G41899
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

6% more Medicare Part D claims than the average urology physician in 2024

1,433 Medicare Part D claims for 367 beneficiaries, against an average of 1,354 among the 9,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 40 claims were for opioids.

  1. James Duke1,433
  2. Specialty average1,354

Most prescribed

  1. Tamsulosin Hcl345 claims
  2. Finasteride168 claims
  3. Sulfamethoxazole-Trimethoprim118 claims
  4. Amoxicillin-Clavulanate Potass102 claims
  5. Ciprofloxacin Hcl73 claims
  6. Amoxicillin70 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.

The Medicare quality score for 2023: 0 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costout of 100 · 30%
  3. Promoting interoperabilityout of 100 · 25%
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Urology Physician providers in California

There are 1,421 urology physician records in California.

Other urology physician records in California

  1. David Aaronson, MDOakland, CA1215053129
  2. Jason Abber, MDPanorama City, CA1356366926
  3. Marc Abboud, MDLos Alamitos, CA1265096531
  4. George AbdelsayedAnaheim, CA1568721843
  5. Garen AbediDowney, CA1285909051
  6. Jennifer Abidari, MDStanford, CA1811098197
  7. Sherif Aboseif, MDOxnard, CA1093882995
  8. Parwiz Abrahimi, M.D., PH.D.Los Angeles, CA1154857613
  9. Anthony Acquaviva, MDVallejo, CA1457439283
  10. Theodore Affue, M.D.El Centro, CA1386674000

Common questions

What is James Duke, MD's NPI number?

James Duke, MD's National Provider Identifier (NPI) is 1871646851, issued on Jan 21, 2007. An NPI identifies a provider in billing; it is not a license.

Where is James Duke, MD located?

The NPPES record lists a practice address at 15366 11TH St, Victorville, CA, 92395. Phone: (760) 962-1884. Providers update this record themselves, so call before visiting.

How can I verify James Duke, MD's license?

NPPES lists California license number G41899, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does James Duke, MD prescribe under Medicare Part D?

In 2024, James Duke, MD had 1,433 Medicare Part D claims for 367 beneficiaries; the average among urology physician prescribers was 1,354. Part D covers Medicare prescriptions only.

What is James Duke, MD's Medicare quality score?

The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.