John W Karesh, MD - Medicare Internal Medicine in Oswego, IL

John W Karesh, MD is a medicare enrolled "Internal Medicine" physician in Oswego, Illinois. He went to University Of Chicago, Pritzker School Of Medicine and graduated in 1977 and has 47 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Advocate Health And Hospitals Corporation and his current practice location is 80 Templeton Dr, Oswego, Illinois. You can reach out to his office (for appointments etc.) via phone at (630) 554-3456.

John W Karesh is licensed to practice in Illinois (license number 036-057128) 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 1932127917.

Contact Information

John W Karesh, MD
80 Templeton Dr,
Oswego, IL 60543-7000
(630) 554-3456
Not Available

Map and Direction




Physician's Profile

Full NameJohn W Karesh
GenderMale
SpecialityInternal Medicine
Experience47 Years
Location80 Templeton Dr, Oswego, 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:
  • John W Karesh attended and graduated from University Of Chicago, Pritzker School Of Medicine in 1977
  NPI Data:
  • NPI Number: 1932127917
  • Provider Enumeration Date: 07/17/2006
  • Last Update Date: 11/18/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 1850415357
  • Enrollment ID: I20100907000508

Medical Identifiers

Medical identifiers for John W Karesh such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1932127917NPI-NPPES
036057128MedicaidIL
L08132OtherINDIVIDUAL MEDICARE #

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 036-057128 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Dmj Home Health Services, IncAurora, ILHome health agency
Advocate Home Health Care ServLombard, ILHome health agency
Copley Memorial HospitalAurora, ILHospital
Advocate Good Samaritan HospitalDowners grove, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Advocate Health And Hospitals Corporation78108009352484

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. John W Karesh 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: 1003542184
PECOS PAC ID: 7810800935
Enrollment ID: O20220930002728

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. John W Karesh 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
John W Karesh, MD
2357 Sequoia Dr,
Aurora, IL 60506-6222

Ph: (630) 859-6800
John W Karesh, MD
80 Templeton Dr,
Oswego, IL 60543-7000

Ph: (630) 554-3456

Reviews and Comments


Internal Medicine Doctors in Oswego, IL

Mark E Peterson, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 80 Templeton Dr, Oswego, IL 60543
Phone: 630-554-3456    
Dr. Alexis Patricia Dunne, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 80 Templeton Dr, Oswego, IL 60543
Phone: 630-554-3456    
Dr. Komal Patel, D.O.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 80 Templeton Dr, Oswego, IL 60543
Phone: 630-554-3456    Fax: 630-551-2970
Jerry G. Morton, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 80 Templeton Dr, Oswego, IL 60543
Phone: 630-978-6671    
Dr. Aaysha Kapila, M.D
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 80 Templeton Dr, Oswego, IL 60543
Phone: 630-859-3248    Fax: 630-551-2970
Dr. Atif Fakhruddin, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 80 Templeton Dr, Oswego, IL 60543
Phone: 630-554-3456    

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.