David B. Thordarson, M.D.
Orthopaedic Surgery Physician · Los Angeles, CA
David B. Thordarson, M.D. is an orthopaedic surgery physician with a practice address in Los Angeles, California, and NPI 1457363798, issued on Aug 13, 2006. Check the license (California G56184, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David B. Thordarson
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- G56184 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1520 San Pablo St, Los Angeles, CA 90033
- Phone
- (323) 442-5860
- Enumerated
- Aug 13, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (323) 442-6990
- Medicaid ID
- 000G561840 CA
- Medicare enrollment
- Enrolled (PECOS I20090617000617); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 1520 San Pablo St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David B. Thordarson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G56184Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% more Medicare Part D claims than the average orthopaedic surgery physician in 2024
368 Medicare Part D claims for 122 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 134 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen68 claims
- Hydrocodone-Acetaminophen53 claims
- Gabapentin46 claims
- Doxycycline Hyclate38 claims
- Meloxicam37 claims
- Diclofenac Sodium21 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): 87.7 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: $35,454.65
31 payments; by number, the most common kind was consulting fee; the largest payer was Extremity Medical. The 15,003 providers of this specialty with any payment received $23,022.89 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.
One hospital affiliation
- Cedars-Sinai Medical CenterWest Hollywood, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
David B. Thordarson among 2,276 orthopaedic surgery physician records in California
David B. Thordarson, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1984 · median 2003 among the 1,347 with a school on file
- Record last updated2007 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Los Angeles → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Elke Ahlmann, M.D.Los Angeles, CA 900331578781191
- Madhav Boddula, M.D., M.P.H.Los Angeles, CA 900331740355643
- Paul CarterLos Angeles, CA 900331982788485
- Lucille ChailleLos Angeles, CA 900331003024407
- Kurt DrollLos Angeles, CA 900331447334917
- Zegergis LebsekalLos Angeles, CA 900331770791154
- Jackson LeeLos Angeles, CA 900331669527289
- Jay Lieberman, MDLos Angeles, CA 900331316959935
Common questions
What is David B. Thordarson, M.D.'s NPI number?
David B. Thordarson, M.D.'s National Provider Identifier (NPI) is 1457363798, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David B. Thordarson, M.D. located?
The NPPES record lists a practice address at 1520 San Pablo St, Los Angeles, CA, 90033. Phone: (323) 442-5860. Providers update this record themselves, so call before visiting.
How can I verify David B. Thordarson, M.D.'s license?
NPPES lists California license number G56184, 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 B. Thordarson, M.D. prescribe under Medicare Part D?
In 2024, David B. Thordarson, M.D. had 368 Medicare Part D claims for 122 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is David B. Thordarson, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.7 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.