Sean O'mahony, MD - Medicare Internal Medicine in Chicago, IL

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Sean O'mahony, MD is a medicare enrolled "Internal Medicine - Hospice And Palliative Medicine" physician in Chicago, Illinois. He graduated from medical school in 1991 and has 33 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Rush University Medical Center and his current practice location is 1725 W Harrison St Ste 10, Chicago, Illinois. You can reach out to his office (for appointments etc.) via phone at (312) 942-7030.

Sean O'mahony is licensed to practice in Texas (license number 48284) 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 1467542290.

Contact Information

Sean O'mahony, MD
1725 W Harrison St Ste 10,
Chicago, IL 60612-3849
(312) 942-7030
(718) 881-6054

Map and Direction




Physician's Profile

Full NameSean O'mahony
GenderMale
SpecialityInternal Medicine
Experience33 Years
Location1725 W Harrison St Ste 10, 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:
  • Sean O'mahony graduated from medical school in 1991
  NPI Data:
  • NPI Number: 1467542290
  • Provider Enumeration Date: 10/13/2006
  • Last Update Date: 05/29/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 8325126980
  • Enrollment ID: I20101103001265

Medical Identifiers

Medical identifiers for Sean O'mahony such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1467542290NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 036126119 (Illinois)Secondary
207RH0002XInternal Medicine - Hospice And Palliative Medicine 48284 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Rush University Medical CenterChicago, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Rush University Medical Center5496658874997

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. Sean O'mahony allows following entities to bill medicare on his behalf.
Entity NameRush University Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093819542
PECOS PAC ID: 5496658874
Enrollment ID: O20040202000228

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. Sean O'mahony 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
Sean O'mahony, MD
1725 W Harrison St Ste 10,
Chicago, IL 60612-3849

Ph: (312) 942-7030		Sean O'mahony, MD
1725 W Harrison St Ste 10,
Chicago, IL 60612-3849

Ph: (312) 942-7030

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.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.