David Klashman, MD
NPI 1265451777 · Rheumatology Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Klashman, MD is a Rheumatology Physician provider in Torrance, CA (NPI 1265451777).
Provider details
- NPI number
- 1265451777
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G56545 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,130 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 1,165 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,137 | $136 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 237 | $149 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 196 | $89 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 143 | $31 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 387 | 93 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 252 | 43 |
| Prednisone | 212 | 53 |
| Hydroxychloroquine Sulfate | 208 | 49 |
| Allopurinol | 139 | 43 |
| Etanerceptbrand: Enbrel Sureclick | 139 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$996 across 50 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-18
- Last updated
- 2009-11-24
Frequently asked questions
- What is David Klashman's NPI number?
- David Klashman's National Provider Identifier (NPI) is 1265451777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Klashman's specialty?
- David Klashman is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is David Klashman located?
- David Klashman's practice location on file with NPPES is 23441 Madison St, Torrance, CA 90505-4725.
- What is David Klashman's phone number?
- The practice phone number listed in the NPPES registry for David Klashman is (310) 373-0340.
- Does David Klashman accept Medicare?
- David Klashman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Klashman's NPI active?
- Yes — David Klashman's NPI (1265451777) is active in the NPPES registry as of the last update on 2009-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.