JOHN PAIK M.D.
NPI 1447699368
Emergency Medicine in Joliet, IL
About John Paik M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN PAIK M.D. (NPI 1447699368) is an individual emergency medicine provider in Joliet, Illinois, licensed in Illinois (036139487) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with Alexian Brothers Medical Center 1, and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses
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
John Paik 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
4Medicare enrollment records show John Paik reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Joliet, IL 60435
- Reassigned Medicare billing, Illinois enrollment
- 982 clinicians in this Medicare group
Downers Grove, IL 60515
- Reassigned Medicare billing, Illinois enrollment
- 4,870 clinicians in this Medicare group
Winfield, IL 60190
- Reassigned Medicare billing, Illinois enrollment
- 64 clinicians in this Medicare group
Rockford, IL 61114
- Reassigned Medicare billing, Illinois enrollment
- 1,375 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Alexian Brothers Medical Center 1
Acute Care Hospitals · Elk Grove Village, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60435 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.
JOLIET, IL 60435
JOLIET, IL 60435
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 John Paik's NPI number?
The NPI number for John Paik is 1447699368. It was assigned to this individual provider in the NPPES registry on June 25, 2013.
Where is John Paik located?
John Paik practices at 333 Madison St, Joliet, IL 60435. The listed phone number is (815) 725-7133.
What is John Paik's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Paik enrolled in Medicare?
Yes. John Paik 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 John Paik's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Paik reassigns Medicare benefits to 4 organizations: Cepamerica Illinois LLP (Joliet, IL), Advocate Health And Hospitals Corporation (Downers Grove, IL), Central Dupage Emergency Physicians, PC (Winfield, IL) and Rockford Health Physicians (Rockford, IL). 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 John Paik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Paik affiliated with any hospitals?
According to CMS data, John Paik is affiliated with Alexian Brothers Medical Center 1.
When was this NPI record last updated?
The NPPES record for John Paik was last updated on July 12, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# John Paik, M.D. · NPI 1447699368
Emergency Medicine physician in Joliet, Illinois. Individual provider, active in the CMS NPPES registry since June 25, 2013.
## Identity
- **NPI:** 1447699368 (Entity type: Individual)
- **Enumerated:** June 25, 2013
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 036139487 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 333 MADISON ST, Joliet, IL 60435-8200
- **Phone:** (815) 725-7133
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Cepamerica Illinois LLP (NPI 1134644164, Joliet, IL); Advocate Health And Hospitals Corporation (NPI 1285903849, Downers Grove, IL); Central Dupage Emergency Physicians, PC (NPI 1619074028, Winfield, IL); Rockford Health Physicians (NPI 1043242886, Rockford, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** July 12, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1447699368) · Data from the CMS NPPES public registry.