DR. OMAR DIAZ (MD) – Emergency Medicine Physician, NPI 1548765845
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,847 EMERGENCY MEDICINE in IL
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Provider Addresses for DR. OMAR DIAZ (MD)
3402 E DEL MAR BLVD STE 184
LAREDO, TX 780416592
Phone: (956) 267-4667
Fax: (956) 435-0138
Type: Mailing
4056, Thatcher Drive, The Villages at Meadow Lakes, Aurora, DuPage County, Illinois, 60504, United States
AURORA, IL 605045374
Phone:
Type: Mailing
University of Illinois at Chicago Hospital (UICH), 1740, West Taylor Street, Near West Side, Illinois Medical District, Chicago, Illinois Medical District, Illinois, 60612, United States
CHICAGO, IL 606127232
Phone: (866) 600-2273
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 $125.
Total Amount is formed as General ($125) + Research ($0) + Ownership ($0) = $125.
Last reported payment date: 2024-02-08 • Largest payer in this snapshot: ABBVIE INC. ($125).
Total Amount
$125
General + Research + Ownership
Payments
1
Total payment records
General Amount
$125
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-02-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $125 |
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: 2021-12-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20211123002048 | I | Emergency Medicine | TX | TBD |
| I20211217001975 | 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 | 221 | 203 | $0 |
| 93010 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 157 | 144 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 67 | 65 | $0 |
| 99291 | Critical care, first 30-74 minutes | 61 | 60 | $0 |
Insurance plans in this area (ZIP 78041)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | TX |
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