NPI registry status
Active
2026 NPPES data Diagnostic Radiology Physician NPI 1912935032 MD
Verify on CMS → Arthur Diamond, MD
Diagnostic Radiology Physician in Rancho Palos Verdes, 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 39,551 in Diagnostic Radiology 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
13
Medicare Part D claims · Diagnostic Radiology Physician avg: 63
Generic prescribing
0%
generic claims · 100% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Arthur Diamond, MD filed 13 Medicare Part D claims in 2023 as a Diagnostic Radiology Physician in Rancho Palos Verdes, California, prescribing 0% generic.
- 13
- Part D claims, 2023
- 0%
- generic prescribing
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.
Arthur Diamond, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
13 0th percentile higher than 0% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Arthur Diamond, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Arthur Diamond, MD?
Quality data not reportedPrimary specialty
Diagnostic Radiology Physician
Medicare Part D claims
13 79% vs specialty avg
Specialty distribution in California
How Diagnostic Radiology Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Diagnostic Radiology Physician. Verify directly:
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).
Arthur Diamond, MD appears in the CMS NPPES registry as a Diagnostic Radiology Physician provider holding MD credentials at 6968 ALTA VISTA DR, Rancho Palos Verdes, CA, 90275, with a listed phone of (310) 265-8859. NPI 1912935032 was issued on 06/29/2006.
Medicare Part D records for calendar year 2023 show 13 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $13K in drug spend, split 100% brand-name and 0% generic by claim count.
Diagnostic Radiology Physician is a mid-sized specialty nationwide, with 39,551 enrolled providers across 56 states and an average of 63 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 | 1912935032 |
|---|---|
| Specialty | Diagnostic Radiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/29/2006 |
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 Arthur Diamond, MD. To verify Arthur Diamond, 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 · Brand-heavy
Arthur Diamond, MD - brand share 100.0%
Diagnostic Radiology Physician average
100% brand-name claims vs 0% generic, on 13 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.
13
Total Claims
$13K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 13
- Total Day Supply
- 378
- Brand vs Generic
- 100% brand / 0% generic
- Brand Drug Cost
- $13K
- Generic Drug Cost
- $0
Patient Demographics
- Average Patient Age
- 79.0 years
- Avg HCC Risk Score
- 0.83
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Ozempic Semaglutide | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Diagnostic Radiology Physician Overview
How Arthur Diamond, MD fits within the Diagnostic Radiology Physician landscape nationally.
39,551
Diagnostic Radiology Physician Providers in US
56
States with Diagnostic Radiology Physician
63
Avg Claims per Provider
Arthur Diamond, MD's 13 claims are below the specialty average of 63.
Nearby Diagnostic Radiology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Diamond.
Dr. Jason Aaronson
MD
Los Angeles, CA
Dr. Pablo Abbona
MD
Los Angeles, CA
Dr. Fatemeh Abdollahi Mofakham
MD
Los Angeles, CA
Dr. Bennett Abe
MD
Visalia, CA
Dr. Richard Abello
M.D.
La Jolla, CA
Compare Diagnostic Radiology 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 Diagnostic Radiology 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 Arthur Diamond, MD's specialty? ▼
Arthur Diamond, MD specializes in Diagnostic Radiology Physician and practices in Rancho Palos Verdes, California. Credentials: MD.
How much does Arthur Diamond, MD prescribe under Medicare Part D? ▼
In 2023, Arthur Diamond, MD wrote 13 Medicare Part D claims totaling $13K in drug costs for N/A beneficiaries.
Where is Arthur Diamond, MD located? ▼
Arthur Diamond, MD is located at 6968 ALTA VISTA DR, Rancho Palos Verdes, CA, 90275. Phone: (310) 265-8859.
What is Arthur Diamond, MD's NPI number? ▼
Arthur Diamond, MD's National Provider Identifier (NPI) is 1912935032, issued on 06/29/2006.
Does Arthur Diamond, MD prescribe more brand-name or generic drugs? ▼
Arthur Diamond, MD's prescribing is 100% brand-name and 0% generic drugs by claim count, with $13K in brand drug costs.
How many Diagnostic Radiology Physician providers are there in the US? ▼
There are 39,551 Diagnostic Radiology Physician providers across 56 states in the US. The average Diagnostic Radiology Physician provider writes 63 Medicare Part D claims per year.
What drugs does Arthur Diamond, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Arthur Diamond, MD's most frequently prescribed drugs include Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Arthur Diamond, MD accept Medicare? ▼
Arthur Diamond, MD appears in CMS Medicare data with 13 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Arthur Diamond, MD's credentials? ▼
Arthur Diamond, MD's NPI is 1912935032 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.
- 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.