James J Herdegen, MD - Medicare Pulmonary Disease in Chicago, IL

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James J Herdegen, MD is a medicare enrolled "Internal Medicine" physician in Chicago, Illinois. He went to University Of Chicago, Pritzker School Of Medicine and graduated in 1986 and has 39 years of diverse experience with area of expertise as Pulmonary Disease. He is a member of the group practice Rush University Medical Group and his current practice location is 1740 W Taylor St, Chicago, Illinois. You can reach out to his office (for appointments etc.) via phone at (866) 600-2273.

James J Herdegen is licensed to practice in Illinois (license number 036078423) 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 1184737793.

Contact Information

James J Herdegen, MD
1740 W Taylor St,
Chicago, IL 60612-7232
(866) 600-2273
Not Available

Map and Direction




Physician's Profile

Full NameJames J Herdegen
GenderMale
SpecialityPulmonary Disease
Experience39 Years
Location1740 W Taylor St, 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:
  • James J Herdegen attended and graduated from University Of Chicago, Pritzker School Of Medicine in 1986
  NPI Data:
  • NPI Number: 1184737793
  • Provider Enumeration Date: 08/16/2006
  • Last Update Date: 07/29/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 0143212779
  • Enrollment ID: I20040401001384

Medical Identifiers

Medical identifiers for James J Herdegen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184737793NPI-NPPES
0040154978OtherILBCBS PROVIDER #
0081644641OtherILBCBS PROVIDER #
0001633166OtherILBCBS PROVIDER #
1003255818MedicaidWI
0021647388OtherILBCBS PROVIDER #

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine 75092 (Wisconsin)Secondary
207R00000XInternal Medicine 036078423 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Rush University Medical CenterChicago, ILHospital
Rush Oak Park HospitalOak park, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Rush University Medical Group54966588741134

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. James J Herdegen 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 NameThe Board Of Trustees Of The University Of Illinois
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386863819
PECOS PAC ID: 3072422716
Enrollment ID: O20031112000158
Entity NameRush University Medical Group
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. James J Herdegen 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
James J Herdegen, MD
840 S Wood St, 806 Csb, Mc 719,
Chicago, IL 60612-4325

Ph: (312) 413-9036		James J Herdegen, MD
1740 W Taylor St,
Chicago, IL 60612-7232

Ph: (866) 600-2273

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).

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