MR. NASSER A SITTA (MD) – Emergency Medical Services (Emergency Medicine) Physician, NPI 1992719843
Emergency Medical Services (Emergency Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,930 INTERNAL MEDICINE in VA
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Provider Addresses for MR. NASSER A SITTA (MD)
PO BOX 223323
CHANTILLY, VA 201533323
Phone: (540) 349-0595
Fax: (540) 349-0587
Type: Mailing
Fauquier Hospital, 500, Hospital Drive, Warrenton, Fauquier County, Virginia, 20186, United States
WARRENTON, VA 201863027
Phone: (540) 349-0595
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $391.
Total Amount is formed as General ($391) + Research ($0) + Ownership ($0) = $391.
Last reported payment date: 2024-10-28 • Largest payer in this snapshot: ABBVIE INC. ($286).
Total Amount
$391
General + Research + Ownership
Payments
7
Total payment records
General Amount
$391
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-28
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $286 |
| MERZ NORTH AMERICA, INC. | $80 |
| Abbott Laboratories | $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: 2004-07-16
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 |
|---|---|---|---|---|
| I20040716000133 | I | Internal Medicine | DC | 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 20153)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MD | |
| Family Practice | MD | |
| General Practice | MD |
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