Leonard Tiger Onsen
Sports Medicine (Orthopaedic Surgery) Physician · Los Angeles, CA
Leonard Tiger Onsen is a sports medicine (orthopaedic surgery) physician with a practice address in Los Angeles, California, and NPI 1104321421, issued on Mar 28, 2018. Check the license (California A185557, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Leonard Tiger Onsen
- Primary taxonomy
- Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X
- License numbers
- A185557 CA
036171278 IL
Self-reported in NPPES; status is on the state search - Practice location
- 6801 Park Ter Ste 400, Los Angeles, CA 90045
- Phone
- (310) 665-7200
- Enumerated
- Mar 28, 2018
- Record last updated
- Nov 17, 2025
- Medicare enrollment
- Enrolled (PECOS I20240830002915); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest sports medicine (orthopaedic surgery) physician records → All 384 in California → Look up another NPI →
Also registered at 6801 Park Ter Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Banffy, MDSports Medicine (Orthopaedic Surgery) Physician1558497982
- Abigail CampbellOrthopaedic Surgery Physician1457762429
- Shannon Chu, PA-CPhysician Assistant1912461781
- Hebah El-Gendi, PA-CPhysician Assistant1255737946
- Alan HwangSports Medicine (Orthopaedic Surgery) Physician1235681495
- Emilia Ivans, PA-CPhysician Assistant1174979090
Verify Leonard Tiger Onsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A185557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average sports medicine (orthopaedic surgery) physician in 2024
32 Medicare Part D claims for 21 beneficiaries, against an average of 288 among the 2,562 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Diclofenac Sodium12 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): 85.7 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: $5,923.66
26 payments; by number, the most common kind was food and beverage; the largest payer was Smith+Nephew, Inc. The 2,400 providers of this specialty with any payment received $19,779.31 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
- Osf Multi-Specialty GroupOttawa, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leonard Tiger Onsen among 384 sports medicine (orthopaedic surgery) physician records in California
Leonard Tiger Onsen is one of 384 sports medicine (orthopaedic surgery) physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 91% of them.
- NPI issued2018 · 91% of these records are older, 7% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2018 · median 2003 among the 293 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0005X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sports Medicine (Orthopaedic Surgery) Physician providers in California
There are 384 sports medicine (orthopaedic surgery) physician records in California.
All 384 in California → Every provider in Los Angeles → Sports Medicine (Orthopaedic Surgery) Physician nationwide →
The 8 sports medicine (orthopaedic surgery) physician records with the nearest ZIP codes
- Michael Banffy, MDLos Angeles, CA 900451558497982
- Neal Elattrache, MDLos Angeles, CA 900451669457354
- Ralph Gambardella, MDLos Angeles, CA 900451205803087
- Alan HwangLos Angeles, CA 900451235681495
- Shrey Kanjiya, M.D.Los Angeles, CA 900451104212083
- Ronald Kvitne, MDLos Angeles, CA 900451639148141
- Kyle Landauer, MDLos Angeles, CA 900451609923895
- Orr Limpisvasti, MDLos Angeles, CA 900451376514984
Common questions
What is Leonard Tiger Onsen's NPI number?
Leonard Tiger Onsen's National Provider Identifier (NPI) is 1104321421, issued on Mar 28, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Tiger Onsen located?
The NPPES record lists a practice address at 6801 Park Ter Ste 400, Los Angeles, CA, 90045. Phone: (310) 665-7200. Providers update this record themselves, so call before visiting.
How can I verify Leonard Tiger Onsen's license?
NPPES lists California license number A185557, 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 Leonard Tiger Onsen prescribe under Medicare Part D?
In 2024, Leonard Tiger Onsen had 32 Medicare Part D claims for 21 beneficiaries; the average among sports medicine (orthopaedic surgery) physician prescribers was 288. Part D covers Medicare prescriptions only.
What is Leonard Tiger Onsen's MIPS final score?
The 2023 MIPS final score is 85.7 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.