David Jordan Klashman, MD
Rheumatology Physician · Torrance, CA
David Jordan Klashman, MD is a rheumatology physician with a practice address in Torrance, California, and NPI 1265451777, issued on Jul 18, 2006. Check the license (California G56545, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Jordan Klashman
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G56545 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23441 Madison St, Torrance, CA 90505
- Phone
- (310) 373-0340
- Enumerated
- Jul 18, 2006
- Record last updated
- Nov 24, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (310) 373-7142
- Medicare enrollment
- Enrolled (PECOS I20110221000501); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 23441 Madison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Carpenter, PTPhysical Therapist1861546723
- Debra Clydesdale, L.A.C.Preventive Medicine/Occupational Environmental Medicine Physician1942428115
- Bett Eng, M.D.Rheumatology Physician1861408742
- Karen Filkins, M.D.Obstetrics & Gynecology Physician1659322469
- Richard Goldin, M.D.Rheumatology Physician1124034103
- Sachiko KodamaDentist1487882692
Verify David Jordan Klashman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G56545Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average rheumatology physician in 2024
3,139 Medicare Part D claims for 441 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 417 claims were for opioids.
Most prescribed
- Methotrexate387 claims
- Hydrocodone-Acetaminophen252 claims
- Prednisone212 claims
- Hydroxychloroquine Sulfate208 claims
- Allopurinol139 claims
- Enbrel Sureclick139 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 practice group's MIPS final score for 2023 (Medicare payment program): 92.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $996.05
50 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Eng Klashman And Mehdi A Partnership OF Professional CorporationsTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Jordan Klashman among 926 rheumatology physician records in California
David Jordan Klashman, MD is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1984 · median 2003 among the 641 with a school on file
- Record last updated2009 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Torrance → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Bett Eng, M.D.Torrance, CA 905051861408742
- Joe Gamboa, MDTorrance, CA 905051598072779
- Richard Goldin, M.D.Torrance, CA 905051124034103
- Marian Kaldas, M.D.Torrance, CA 905051790979698
- Paul Kim, M.D.Torrance, CA 905051083652283
- Maryann Kimoto, D.O.Torrance, CA 905051154749034
- Kenneth Nies, M.D.Torrance, CA 905051538174370
- Morteza Azimian, M.D.Torrance, CA 905031295940229
Common questions
What is David Jordan Klashman, MD's NPI number?
David Jordan Klashman, MD's National Provider Identifier (NPI) is 1265451777, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Jordan Klashman, MD located?
The NPPES record lists a practice address at 23441 Madison St, Torrance, CA, 90505. Phone: (310) 373-0340. Providers update this record themselves, so call before visiting.
How can I verify David Jordan Klashman, MD's license?
NPPES lists California license number G56545, 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 David Jordan Klashman, MD prescribe under Medicare Part D?
In 2024, David Jordan Klashman, MD had 3,139 Medicare Part D claims for 441 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is David Jordan Klashman, MD's MIPS final score?
The 2023 MIPS final score is 92.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.