Nathan Ontrop MD Sc
About this NPIWhat this record shows.
NPI 1619498052 is registered to Nathan Ontrop MD Sc, a healthcare organisation classified as "Psychiatry" and located at 25 E Washington St Ste 1601 in Chicago, Illinois. The organisation's authorised official is Nathan Ontrop. The organisation has been enumerated in the NPI registry since 2017.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Part B Supplier
- O20180521000476Clinic/Group PracticeIL
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Nathan Ontrop MD Sc accepts. To confirm in-network status with your specific health plan, contact Nathan Ontrop MD Sc directly at (312) 725-2347.
Frequently asked
Yes. NPI 1619498052 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Psychiatry is the medical specialty focused on the diagnosis, treatment, and prevention of mental health conditions, including depression, anxiety, bipolar disorder, and schizophrenia.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (312) 725-2347.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Nathan Ontrop MD Sc is a Type-2 organisational NPI.