JAMES J. HERDEGEN MD
NPI 1184737793
Internal Medicine in Chicago, IL
About James J. Herdegen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES J. HERDEGEN MD (NPI 1184737793) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (036078423) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Rush Oak Park Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Secondary Practice Locations 2
Other Identifiers 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
James J. Herdegen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Rush Oak Park Hospital
Acute Care Hospitals · Oak Park, ILRush University Medical Center
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 21
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60612
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is James Herdegen's NPI number?
The NPI number for James Herdegen is 1184737793. It was assigned to this individual provider in the NPPES registry on August 16, 2006.
Where is James Herdegen located?
James Herdegen practices at 1740 W Taylor St, Chicago, IL 60612. The listed phone number is (866) 600-2273.
What is James Herdegen's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is James Herdegen enrolled in Medicare?
Yes. James Herdegen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does James Herdegen accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list James Herdegen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is James Herdegen affiliated with any hospitals?
According to CMS data, James Herdegen is affiliated with Rush Oak Park Hospital and Rush University Medical Center.
When was this NPI record last updated?
The NPPES record for James Herdegen was last updated on July 29, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.
