NASSIM YOUSSEF EL HAJJ (MD) – Gastroenterology Physician, NPI 1073719688
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
12,368 INTERNAL MEDICINE in FL
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Provider Addresses for NASSIM YOUSSEF EL HAJJ (MD)
4800, Belfort Road, Jacksonville, Duval County, Florida, 32256, United States
JACKSONVILLE, FL 322566004
Phone: (904) 398-3262
Fax: (904) 265-4807
Type: Mailing
3627, University Boulevard South, Englewood, Jacksonville, Duval County, Florida, 32216, United States
SUITE 705
JACKSONVILLE, FL 32216
Phone: (904) 398-6718
Fax: (904) 396-0329
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 37 Open Payments records for all available years, with a total value of $815.
Total Amount is formed as General ($815) + Research ($0) + Ownership ($0) = $815.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: ABBVIE INC. ($374).
Total Amount
$815
General + Research + Ownership
Payments
37
Total payment records
General Amount
$815
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $374 |
| QOL Medical, LLC | $111 |
| Intuitive Surgical, Inc. | $86 |
| Madrigal Pharmaceuticals | $54 |
| GENZYME CORPORATION | $36 |
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: 2008-07-16
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 |
|---|---|---|---|---|
| I20080716000258 | I | Gastroenterology | FL | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 176 | 129 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 105 | 104 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 54 | 52 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 52 | 52 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 51 | 51 | $0 |
Insurance plans in this area (ZIP 32256)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | FL | |
| P A T H O L O G Y | FL | |
| Gastroenterology, Internal Medicine | FL | |
| Gastroenterology, Internal Medicine | FL | |
| G A S T R O E N T E R O L O G Y | FL | |
| Internal Medicine, Gastroenterology | FL | |
| Nurse Practitioner | FL | |
| - | FL | |
| - | FL | |
| G A S T R O E N T E R O L O G Y | FL |
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