MR. NASSER A SITTA MD
NPI 1992719843
Emergency Medicine - Emergency Medical Services in Warrenton, VA
About Mr. Nasser A Sitta Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. NASSER A SITTA MD (NPI 1992719843) is an individual emergency medical services provider in Warrenton, Virginia, licensed in Virginia (0101049309) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1982).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mr. Nasser A Sitta Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Nasser Sitta reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fairfax, VA 22033
- Reassigned Medicare billing, District of Columbia enrollment
- 71 clinicians in this Medicare group
Fairfax, VA 22031
- Reassigned Medicare billing, District of Columbia enrollment
- 2,618 clinicians in this Medicare group
Berwyn Heights, MD 20740
- Reassigned Medicare billing, District of Columbia enrollment
- 26 clinicians in this Medicare group
Berwyn Heights, MD 20740
- Reassigned Medicare billing, District of Columbia enrollment
- 23 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20186 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WARRENTON, VA 20186
WARRENTON, VA 20186
WARRENTON, VA 20186
WARRENTON, VA 20186
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Nasser Sitta's NPI number?
The NPI number for Nasser Sitta is 1992719843. It was assigned to this individual provider in the NPPES registry on July 28, 2006.
Where is Nasser Sitta located?
Nasser Sitta practices at 500 Hospital Dr, Warrenton, VA 20186. The listed phone number is (540) 349-0595.
What is Nasser Sitta's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.
Is Nasser Sitta enrolled in Medicare?
Yes. Nasser Sitta is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Nasser Sitta's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nasser Sitta reassigns Medicare benefits to 4 organizations: Fair Oaks Emergency Physicians, PLLC (Fairfax, VA), Inova Health Care Services (Fairfax, VA), Express Healthcare, LLC (Berwyn Heights, MD) and Med-Ped Health Care LLC (Berwyn Heights, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nasser Sitta's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Nasser Sitta was last updated on May 6, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mr. Nasser A Sitta, MD · NPI 1992719843
Emergency Medical Services physician in Warrenton, Virginia. Individual provider, active in the CMS NPPES registry since July 28, 2006.
## Identity
- **NPI:** 1992719843 (Entity type: Individual)
- **Enumerated:** July 28, 2006
- **Primary specialty:** Emergency Medicine - Emergency Medical Services · taxonomy 207PE0004X
- **State license:** 0101049309 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 500 HOSPITAL DR, Warrenton, VA 20186-3027
- **Phone:** (540) 349-0595
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Fair Oaks Emergency Physicians, PLLC (NPI 1649203605, Fairfax, VA); Inova Health Care Services (NPI 1669511051, Fairfax, VA); Express Healthcare, LLC (NPI 1598994733, Berwyn Heights, MD); Med-Ped Health Care LLC (NPI 1336296730, Berwyn Heights, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1982
## Record status
- **NPPES last updated:** May 6, 2008
- **Other identifiers:** Medicare UPIN F42771; Medicare PIN 014268F25 (VA); Medicare PIN 930000766 (VA); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1992719843) · Data from the CMS NPPES public registry.