Dr Nathan D Ontrop, MD - Medicare Psychiatry in Chicago, IL

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Dr Nathan D Ontrop, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Chicago, Illinois. He went to Loyola University Of Chicago, Stritch School Of Medicine and graduated in 2011 and has 14 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Advocate Health And Hospitals Corporation, Carle West Physician Group Inc and his current practice location is 25 E Washington St Ste 1601, Chicago, Illinois. You can reach out to his office (for appointments etc.) via phone at (312) 725-2347.

Dr Nathan D Ontrop is licensed to practice in Illinois (license number 125059575) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1760778468.

Contact Information

Dr Nathan D Ontrop, MD
25 E Washington St Ste 1601,
Chicago, IL 60602
(312) 725-2347
(312) 577-1574

Map and Direction




Physician's Profile

Full NameDr Nathan D Ontrop
GenderMale
SpecialityPsychiatry
Experience14 Years
Location25 E Washington St Ste 1601, Chicago, Illinois
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Nathan D Ontrop attended and graduated from Loyola University Of Chicago, Stritch School Of Medicine in 2011
  NPI Data:
  • NPI Number: 1760778468
  • Provider Enumeration Date: 06/22/2011
  • Last Update Date: 07/28/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 7911219829
  • Enrollment ID: I20150707001683

Medical Identifiers

Medical identifiers for Dr Nathan D Ontrop such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1760778468NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry 125059575 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Advocate Illinois Masonic Medical CenterChicago, ILHospital
Advocate Bromenn Medical CenterNormal, ILHospital

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Nathan D Ontrop allows following entities to bill medicare on his behalf.
Entity NameAdvocate Health And Hospitals Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700824455
PECOS PAC ID: 7810800935
Enrollment ID: O20031106000064
Entity NameNathan Ontrop Md Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619498052
PECOS PAC ID: 0547525669
Enrollment ID: O20180521000476
Entity NameCarle West Physician Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467074138
PECOS PAC ID: 8921420308
Enrollment ID: O20200613000147

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Nathan D Ontrop is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Nathan D Ontrop, MD
25 E Washington St Ste 1601,
Chicago, IL 60602-1882

Ph: (312) 725-2347		Dr Nathan D Ontrop, MD
25 E Washington St Ste 1601,
Chicago, IL 60602

Ph: (312) 725-2347

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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