DR. SUNIL CHERIAN JOHN MD
NPI 1427154665
Internal Medicine - Rheumatology in Orland Park, IL
About Dr. Sunil Cherian John Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SUNIL CHERIAN JOHN MD (NPI 1427154665) is an individual rheumatology provider in Orland Park, Illinois, licensed in Illinois (036-121669) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Advocate Trinity Hospital, and is a graduate of Other (1988).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
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
Dr. Sunil Cherian John 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.
Medicare Billing Reassignment
Medicare enrollment records show Sunil John reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- 4,870 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 10
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Trinity Hospital
Acute Care Hospitals · Chicago, ILRiverside Medical Center
Acute Care Hospitals · Kankakee, ILAdvocate Christ Hospital & Medical Center
Acute Care Hospitals · Oak Lawn, ILSilver Cross Hospital And Medical Centers
Acute Care Hospitals · New Lenox, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60467 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.
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 Sunil John's NPI number?
The NPI number for Sunil John is 1427154665. It was assigned to this individual provider in the NPPES registry on September 15, 2006.
Where is Sunil John located?
Sunil John practices at 9550 W 167th St Amg-Orland Park, Orland Park, IL 60467. The listed phone number is (708) 873-4500.
What is Sunil John's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Sunil John enrolled in Medicare?
Yes. Sunil John 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 organization bills Medicare for Sunil John's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sunil John reassigns Medicare benefits to Advocate Health And Hospitals Corporation (Oak Lawn, IL). The 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 Sunil John's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sunil John accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Sunil John 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 Sunil John affiliated with any hospitals?
According to CMS data, Sunil John is affiliated with Advocate Trinity Hospital, Riverside Medical Center, Advocate Christ Hospital & Medical Center and Silver Cross Hospital And Medical Centers.
When was this NPI record last updated?
The NPPES record for Sunil John was last updated on March 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.
# Dr. Sunil Cherian John, MD · NPI 1427154665
Rheumatology physician in Orland Park, Illinois. Individual provider, active in the CMS NPPES registry since September 15, 2006.
## Identity
- **NPI:** 1427154665 (Entity type: Individual)
- **Enumerated:** September 15, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 036-121669 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 9550 W 167TH ST, AMG-ORLAND PARK, Orland Park, IL 60467-5561
- **Phone:** (708) 873-4500 · **Fax:** (708) 873-4505
## 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:** Advocate Health And Hospitals Corporation (NPI 1174747075, Oak Lawn, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1988
## Record status
- **NPPES last updated:** March 25, 2025
- **Other identifiers:** Medicaid 30205465 (NH)
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Source: [NPI Profile](https://npiprofile.com/npi/1427154665) · Data from the CMS NPPES public registry.