DR. CHAD R. JOHNSTON (MD) – Internal Medicine Physician, NPI 1538239520
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,824 INTERNAL MEDICINE in IL
Provider Addresses for DR. CHAD R. JOHNSTON (MD)
916 N WASHINGTON ST
DU QUOIN, IL 628321200
Phone: (618) 542-2146
Type: Location
900 N WASHINGTON ST
DU QUOIN, IL 628321233
Phone: (618) 542-2146
Fax: (618) 542-4756
Type: Mailing
North Lafayette Street, Whittier, Denver, Colorado, 80205, United States
DENVER, CO 802182391
Phone: (303) 955-5131
Fax: (303) 955-5181
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 33 Open Payments records for all available years, with a total value of $718.
Total Amount is formed as General ($718) + Research ($0) + Ownership ($0) = $718.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: USWM, LLC ($497).
Total Amount
$718
General + Research + Ownership
Payments
33
Total payment records
General Amount
$718
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| USWM, LLC | $497 |
| Janssen Biotech, Inc. | $145 |
| Indivior Inc. | $50 |
| Alkermes, Inc. | $25 |
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: 2007-11-28
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 |
|---|---|---|---|---|
| I20071128000069 | I | Internal Medicine | IL | 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 62832)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | IL | |
| Physician Assistant | IN | |
| Registered Dietitian Or Nutrition Professional | IL | |
| Nurse Practitioner | IL | |
| Critical Care (Intensivists), Internal Medicine | LA | |
| Nurse Practitioner | IL | |
| General Surgery | CA | |
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.