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Nathan Ontrop, M.D
NPI 1760778468 · on the registry since 2011 · sole proprietor
Practice
- Address
- 25 E Washington St Ste 1601
Chicago, IL 60602 - Phone
- (312) 725-2347
- Fax
- (312) 577-1574
- Organisation at this address
- Lg Therapy, Llc
Jens Hussey Llc
Working Sobriety
Mark Gindi Md Sc
Aven Harbor, PllcInferred from a shared address, not stated in the registry. - Clinicians at this address
- 263
Additional practice sites
- 836 W Wellington Ave, Chicago, IL
Registry record
- Primary taxonomy
- Psychiatry
2084P0800X
- Also registered as
- Psychiatry
- Licence states on file
- IL
From the registry's licence fields, which are often incomplete.
- Sex
- Male
- Record last updated
- 2025-08-07
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 Illinois