DR. JOAN DIMOPOULOS (M.D.) – Emergency Medicine Physician, NPI 1659371573
Emergency Medicine Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
2,845 EMERGENCY MEDICINE in IL
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Provider Addresses for DR. JOAN DIMOPOULOS (M.D.)
458, Ridgeland Avenue, Elmhurst, DuPage County, Illinois, 60126, United States
ELMHURST, IL 601262218
Phone: (630) 782-0135
Type: Mailing
2160, South 1st Avenue, Maywood, Proviso Township, Cook County, Illinois, 60153, United States
LOYOLA UNIVERSITY MEDICAL CENTER
MAYWOOD, IL 601533328
Phone: (708) 327-2549
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $18.
Total Amount is formed as General ($18) + Research ($0) + Ownership ($0) = $18.
Last reported payment date: 2023-09-07 • Largest payer in this snapshot: Sumitomo Pharma America, Inc. ($18).
Total Amount
$18
General + Research + Ownership
Payments
1
Total payment records
General Amount
$18
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-09-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Sumitomo Pharma America, Inc. | $18 |
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: 2005-10-21
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 |
|---|---|---|---|---|
| I20051021000707 | I | Emergency 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 97 | 95 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 52 | 52 | $0 |
| 99291 | Critical care, first 30-74 minutes | 27 | 27 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 17 | 16 | $0 |
Insurance plans in this area (ZIP 60126)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | IL | |
| - | IL | |
| N E U R O L O G Y | IL | |
| Family Practice | IL | |
| Internal Medicine, Pediatric Medicine | IL | |
| Hospitalist, Family Practice | TX | |
| - | IL | |
| - | IL | |
| - | IL | |
| - | IL |
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