Search › California › 207XX0005X
Leonard Onsen
NPI 1104321421 · on the registry since 2018 · sole proprietor
Practice
- Address
- 6801 Park Ter Ste 400
Los Angeles, CA 90045 - Phone
- (310) 665-7200
- Organisation at this address
- Kerlan Jobe
Ketamine Clinics Llc
Steven M. Back Md Apc
Ronald S Kvitne Md Inc
Shore Mds Medical CorpInferred from a shared address, not stated in the registry. - Clinicians at this address
- 99
Additional practice sites
- 1740 W Taylor St, Chicago, IL
Registry record
- Primary taxonomy
- 207XX0005X
207XX0005X
- Also registered as
- 207XX0005X
207X00000X - Licence states on file
- CA, IL
From the registry's licence fields, which are often incomplete.
- Sex
- Male
- Record last updated
- 2025-11-17
Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California