JOHN JONGYOON BYUN – Rheumatology Physician, NPI 1730684671
Rheumatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
357 RHEUMATOLOGY in IL
Provider Addresses for JOHN JONGYOON BYUN
180 HARVESTER DR STE 110
BURR RIDGE, IL 605276686
Phone: (773) 702-1150
Type: Mailing
5841 S MARYLAND AVE
CHICAGO, IL 606371443
Phone: (773) 702-6119
Type: Location
South Paulina Street, Near West Side, Illinois Medical District, Chicago, Cook County, Illinois, 60608, United States
CHICAGO, IL 606123806
Phone: (312) 942-5000
Type: Location
600, South Paulina Street, Near West Side, Illinois Medical District, Chicago, Cook County, Illinois, 60612, United States
STE 403
CHICAGO, IL 606123806
Phone: (312) 942-5000
Type: Mailing
8558 BROADWAY
MERRILLVILLE, IN 464107032
Phone:
Type: Mailing
9130 COLUMBIA AVE STE A
MUNSTER, IN 463212932
Phone: (219) 836-1310
Fax: (219) 836-0617
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 32 Open Payments records for all available years, with a total value of $1,444.
Total Amount is formed as General ($1,444) + Research ($0) + Ownership ($0) = $1,444.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: ABBVIE INC. ($387).
Total Amount
$1,444
General + Research + Ownership
Payments
32
Total payment records
General Amount
$1,444
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $387 |
| GlaxoSmithKline, LLC. | $252 |
| Amgen Inc. | $155 |
| Janssen Scientific Affairs, LLC | $125 |
| Novo Nordisk Inc | $121 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2023-08-29
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20230829000150 | I | Rheumatology | IN | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 60527)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| E N D O C R I N O L O G Y | IN | |
| - | IL | |
| Nurse Practitioner | IN | |
| Nurse Practitioner | IN | |
| N E U R O L O G Y | NE | |
| Nurse Practitioner | IL | |
| Internal Medicine | IN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | IL | |
| R H E U M A T O L O G Y | IN | |
| Internal Medicine | IL |
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