NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1265451777 MD
Verify on CMS → David Klashman, MD
Rheumatology Physician in Torrance, 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 6,200 in Rheumatology 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
3K
Medicare Part D claims · 438 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
80%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
92.4/100
▲ 9 pts above national avg 83.1 · Exceptional
Industry payments
$996.05
50 payments · CMS Open Payments (Sunshine Act)
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
David Klashman, MD reported a CMS MIPS final score of 92.4/100 - above the 83.1 national average - and filed 3,134 Medicare Part D claims in 2023.
- 92.4/100
- MIPS score · +9 vs avg
- 3K
- Part D claims, 2023
- 80%
- 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.
David Klashman, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
92 Top 32% higher than 68% 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 David Klashman, MD sits
This provider among rheumatology physician peers
Across the 2,181 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, David Klashman, MD writes more Part D claims than 73% of them and scores higher on MIPS quality than 69% - placing this provider in the high-volume, high-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 rheumatology physician peer from a representative sample of 60; the gold marker is David Klashman, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
David Klashman, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 David Klashman, MD?
High performer (top quartile)Primary specialty
Rheumatology Physician
Medicare Part D claims
3,134 53% vs specialty avg
MIPS final score
92.4/100 9.3 pts vs avg
Specialty distribution in California
How Rheumatology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
David Klashman, MD's 2023 MIPS final score plotted against the Rheumatology Physician national average
- MIPS Final Score
- 92.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Rheumatology Physician) - 92.4/100 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).
David Klashman, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 23441 MADISON ST, Torrance, CA, 90505, with a listed phone of (310) 373-0340. NPI 1265451777 was issued on 07/18/2006.
Medicare Part D records for calendar year 2023 show 3,134 prescription claims written by this provider, covering 438 Medicare beneficiaries and totaling roughly $3.5 million in drug spend, split 19% brand-name and 80% generic by claim count, with an opioid prescribing rate of 11.6%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 92.4/100 for the 2023 performance year (Quality 100, Cost 74.5), compared with the national average of 83.1.
Rheumatology Physician is a mid-sized specialty nationwide, with 6,200 enrolled providers across 52 states and an average of 2,054 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 | 1265451777 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/18/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
92.3545
Final Score
Avg: 83.1
100
Quality
74.5149
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where David Klashman, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Eng Klashman And Mehdi A Partnership OF Professional Corporations
Torrance, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for David Klashman, MD. Source: openpaymentsdata.cms.gov.
Total received
$996
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 David Klashman, MD. To verify David Klashman, 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 · Typical
David Klashman, MD - brand share 19.0%
Rheumatology Physician average
19% brand-name claims vs 80% generic, on 3,134 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.
3,134
Total Claims
$3.5M
Total Drug Cost
438
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,829
- Total Day Supply
- 169,287
- Brand vs Generic
- 19% brand / 80% generic
- Brand Drug Cost
- $3.3M
- Generic Drug Cost
- $157K
- Opioid Claims
- 364 (11.6% rate)
- Antibiotic Claims
- 28
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 1.33
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 26, 65-74: 186, 75-84: 175, 85+: 51
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Klashman, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Methotrexate
Methotrexate
388 claims
- Prednisone
Prednisone
253 claims
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
204 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
198 claims
- Alendronate Sodium 142
Alendronate Sodium
142 claims
- Allopurinol 138
Allopurinol
138 claims
- Enbrel Sureclick 119
Enbrel Sureclick
119 claims
- Gabapentin 111
Gabapentin
111 claims
| Drug | Claims |
|---|---|
| Methotrexate Methotrexate Sodium | 388 |
| Prednisone | 253 |
| Hydroxychloroquine Sulfate | 204 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 198 |
| Alendronate Sodium | 142 |
| Allopurinol | 138 |
| Enbrel Sureclick Etanercept | 119 |
| Gabapentin | 111 |
| Tramadol Hcl | 103 |
| Diclofenac Sodium | 96 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How David Klashman, MD fits within the Rheumatology Physician landscape nationally.
6,200
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
David Klashman, MD's 3,134 claims are above the specialty average of 2,054.
Nearby Rheumatology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Klashman.
Dr. Thomas Abel
MD
Monte Sereno, CA
Dr. Thomas Adamson
M.D.
San Diego, CA
Dr. Sana Afroz
MD
Moreno Valley, CA
Dr. Atul Agrawal
MD
Antioch, CA
Dr. Bikramjit Ahluwalia
MD
Apple Valley, CA
Compare Rheumatology 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 Rheumatology 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 David Klashman, MD's specialty? ▼
David Klashman, MD specializes in Rheumatology Physician and practices in Torrance, California. Credentials: MD.
How much does David Klashman, MD prescribe under Medicare Part D? ▼
In 2023, David Klashman, MD wrote 3,134 Medicare Part D claims totaling $3.5M in drug costs for 438 beneficiaries.
What is David Klashman, MD's Medicare quality score? ▼
David Klashman, MD has a CMS MIPS Final Score of 92.4/100 (Quality: 100, Cost: 74.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is David Klashman, MD located? ▼
David Klashman, MD is located at 23441 MADISON ST, Torrance, CA, 90505. Phone: (310) 373-0340.
What is David Klashman, MD's NPI number? ▼
David Klashman, MD's National Provider Identifier (NPI) is 1265451777, issued on 07/18/2006.
Does David Klashman, MD prescribe more brand-name or generic drugs? ▼
David Klashman, MD's prescribing is 19% brand-name and 80% generic drugs by claim count, with $3.3M in brand drug costs.
Does David Klashman, MD prescribe opioids? ▼
Yes, David Klashman, MD had 364 opioid claims in 2023 with an opioid prescribing rate of 11.6%.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,200 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does David Klashman, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, David Klashman, MD's most frequently prescribed drugs include Methotrexate, Prednisone, Hydroxychloroquine Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Klashman, MD accept Medicare? ▼
David Klashman, MD appears in CMS Medicare data with 3,134 Part D claims and 438 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Klashman, MD's credentials? ▼
David Klashman, MD's NPI is 1265451777 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.