CHIJEN LEE CHEN M.D.
NPI 1912589946
Hospitalist in Janesville, WI
About Chijen Lee Chen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHIJEN LEE CHEN M.D. (NPI 1912589946) is an individual hospitalist provider in Janesville, Wisconsin, licensed in Wisconsin (83525-20) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, is affiliated with Ssm Health St Mary's Hospital - Madison, and maintains a secondary practice location in North Chicago.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Chijen Lee Chen M.d. 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.
Medicare Billing Reassignments
2Medicare enrollment records show Chijen Chen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Monroe, WI 53566
- Reassigned Medicare billing, Wisconsin enrollment
- 376 clinicians in this Medicare group
Madison, WI 53715
- Reassigned Medicare billing, Wisconsin enrollment
- 1,377 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
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.
Ssm Health St Mary's Hospital - Madison
Acute Care Hospitals · Madison, WISsm Health St Mary's Hospital - Janesville
Acute Care Hospitals · Janesville, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53546 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
JANESVILLE, WI 53546
JANESVILLE, WI 53546
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 Chijen Chen's NPI number?
The NPI number for Chijen Chen is 1912589946. It was assigned to this individual provider in the NPPES registry on April 28, 2021.
Where is Chijen Chen located?
Chijen Chen practices at 3400 E Racine St, Janesville, WI 53546. The listed phone number is (608) 373-8000.
What is Chijen Chen's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Chijen Chen enrolled in Medicare?
Yes. Chijen Chen 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.
Which organizations bill Medicare for Chijen Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chijen Chen reassigns Medicare benefits to 2 organizations: The Monroe Clinic, Inc. (Monroe, WI) and Dean Health Systems, Inc (Madison, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Chijen Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Chijen Chen affiliated with any hospitals?
According to CMS data, Chijen Chen is affiliated with Ssm Health St Mary's Hospital - Madison and Ssm Health St Mary's Hospital - Janesville.
When was this NPI record last updated?
The NPPES record for Chijen Chen was last updated on August 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Chijen Lee Chen, M.D. · NPI 1912589946
Hospitalist physician in Janesville, Wisconsin. Individual provider, active in the CMS NPPES registry since April 28, 2021.
## Identity
- **NPI:** 1912589946 (Entity type: Individual)
- **Enumerated:** April 28, 2021
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 83525-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 3400 E RACINE ST, Janesville, WI 53546-2344
- **Phone:** (608) 373-8000 · **Fax:** (608) 373-8514
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Monroe Clinic, Inc. (NPI 1386720548, Monroe, WI); Dean Health Systems, Inc (NPI 1053358846, Madison, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** August 21, 2024
- **Other identifiers:** Medicaid 1912589946 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1912589946) · Data from the CMS NPPES public registry.