NPI registry status
Active
2026 NPPES data Urology Physician NPI 1871646851 MD
Verify on CMS → James Duke, MD
Urology Physician in Victorville, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 13,367 in Urology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 321 beneficiaries · Urology Physician avg: 1K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 83 pts below national avg 83.1 · Penalty band
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
James Duke, MD reported a CMS MIPS final score of 0/100 - below the 83.1 national average - and filed 1,080 Medicare Part D claims in 2023.
- 0/100
- MIPS score · -83 vs avg
- 1K
- Part D claims, 2023
- 97%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
James Duke, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
0 0th percentile higher than 0% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where James Duke, MD sits
This provider among urology physician peers
Across the 4,623 urology physician providers who report both Medicare Part D prescribing and a MIPS quality score, James Duke, MD writes more Part D claims than 41% of them and scores higher on MIPS quality than 0% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one urology physician peer from a representative sample of 60; the gold marker is James Duke, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
James Duke, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about James Duke, MD?
Below national averagePrimary specialty
Urology Physician
Medicare Part D claims
1,080 16% vs specialty avg
MIPS final score
0/100 83.1 pts vs avg
Specialty distribution in California
How Urology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
James Duke, MD's 2023 MIPS final score plotted against the Urology Physician national average
- MIPS Final Score
- 0/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Urology Physician) - 0/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
James Duke, MD appears in the CMS NPPES registry as a Urology Physician provider holding MD credentials at 15366 11TH ST, Victorville, CA, 92395, with a listed phone of (760) 962-1884. NPI 1871646851 was issued on 01/21/2007.
Medicare Part D records for calendar year 2023 show 1,080 prescription claims written by this provider, covering 321 Medicare beneficiaries and totaling roughly $71K in drug spend, split 3% brand-name and 97% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.
Urology Physician is a mid-sized specialty nationwide, with 13,367 enrolled providers across 54 states and an average of 1,280 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1871646851 |
|---|---|
| Specialty | Urology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/21/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
0
Final Score
Avg: 83.1
0
Quality
Reporting: Individual
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to James Duke, MD. To verify James Duke, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
James Duke, MD - brand share 3.0%
Urology Physician average
3% brand-name claims vs 97% generic, on 1,080 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,080
Total Claims
$71K
Total Drug Cost
321
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,123
- Total Day Supply
- 56,702
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $32K
- Generic Drug Cost
- $38K
- Antibiotic Claims
- 409
Patient Demographics
- Average Patient Age
- 74.7 years
- Avg HCC Risk Score
- 1.84
- Gender Split
- 24% female / 76% male
- Age Distribution
- <65: 20, 65-74: 140, 75-84: 123, 85+: 38
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What James Duke, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Tamsulosin Hcl
Tamsulosin Hcl
285 claims
- Finasteride
Finasteride
116 claims
- Amoxicillin-Clavul… 93
Amoxicillin-Clavulanate Potass
93 claims
- Sulfamethoxazole-T… 85
Sulfamethoxazole-Trimethoprim
85 claims
- Amoxicillin 50
Amoxicillin
50 claims
- Ciprofloxacin Hcl 45
Ciprofloxacin Hcl
45 claims
- Alfuzosin Hcl Er 44
Alfuzosin Hcl Er
44 claims
- Cephalexin 44
Cephalexin
44 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 285 |
| Finasteride | 116 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 93 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 85 |
| Amoxicillin | 50 |
| Ciprofloxacin Hcl | 45 |
| Alfuzosin Hcl Er Alfuzosin Hcl | 44 |
| Cephalexin | 44 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 42 |
| Nitrofurantoin Nitrofurantoin Macrocrystal | 38 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Urology Physician Overview
How James Duke, MD fits within the Urology Physician landscape nationally.
13,367
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider
James Duke, MD's 1,080 claims are below the specialty average of 1,280.
Nearby Urology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Duke.
Dr. David Aaronson
MD
Oakland, CA
Dr. Jason Abber
MD
Panorama City, CA
Dr. Marc Abboud
MD
Los Alamitos, CA
George Abdelsayed
Anaheim, CA
Garen Abedi
Downey, CA
Compare Urology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Urology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is James Duke, MD's specialty? ▼
James Duke, MD specializes in Urology Physician and practices in Victorville, California. Credentials: MD.
How much does James Duke, MD prescribe under Medicare Part D? ▼
In 2023, James Duke, MD wrote 1,080 Medicare Part D claims totaling $71K in drug costs for 321 beneficiaries.
What is James Duke, MD's Medicare quality score? ▼
James Duke, MD has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is James Duke, MD located? ▼
James Duke, MD is located at 15366 11TH ST, Victorville, CA, 92395. Phone: (760) 962-1884.
What is James Duke, MD's NPI number? ▼
James Duke, MD's National Provider Identifier (NPI) is 1871646851, issued on 01/21/2007.
Does James Duke, MD prescribe more brand-name or generic drugs? ▼
James Duke, MD's prescribing is 3% brand-name and 97% generic drugs by claim count, with $32K in brand drug costs.
How many Urology Physician providers are there in the US? ▼
There are 13,367 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does James Duke, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, James Duke, MD's most frequently prescribed drugs include Tamsulosin Hcl, Finasteride, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Duke, MD accept Medicare? ▼
James Duke, MD appears in CMS Medicare data with 1,080 Part D claims and 321 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Duke, MD's credentials? ▼
James Duke, MD's NPI is 1871646851 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.