SASKIA VAN TERHEYDEN MD
NPI 1669112512
Emergency Medicine in Alexandria, VA

Active since March 30, 2022PECOS Enrolled
4320 SEMINARY RD, ALEXANDRIA, VA 22304(703) 504-3000 Get Directions Write a Review

NPPES record last updated: July 30, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Saskia Van Terheyden Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SASKIA VAN TERHEYDEN MD (NPI 1669112512) is an individual emergency medicine provider in Alexandria, Virginia, licensed in Virginia (0101284954) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1669112512
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameSASKIA VAN TERHEYDENCredential: MD
Location Address4320 SEMINARY RDAlexandria, VA 22304-1535
Mailing Address110 Irving St NwWashington, DC 20010-3017
Sole ProprietorNo
Enumeration DateMarch 30, 2022
Last NPPES UpdateJuly 30, 2025
NPPES CertifiedJuly 30, 2025
✔ NPI 1669112512 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in VA · 0101284954
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
4320 SEMINARY RD, Alexandria, VA 22304

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Saskia Van Terheyden Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Saskia Van Terheyden reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Emergency Medicine
400 FANNON ST
Alexandria, VA 22301
  • Reassigned Medicare billing, District of Columbia enrollment
  • 135 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 22304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Internal Medicine (Critical Care Medicine)
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Radiology (Diagnostic Radiology)
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Pediatrics (Neonatal-Perinatal Medicine)
4320 SEMINARY RD, SUITE 3000
ALEXANDRIA, VA 22304
Nurse Anesthetist, Certified Registered
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Physical Therapist
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Internal Medicine (Critical Care Medicine)
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Nurse Practitioner
4320 SEMINARY RD
ALEXANDRIA, VA 22304
Internal Medicine (Critical Care Medicine)
4320 SEMINARY RD
ALEXANDRIA, VA 22304

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 Saskia Van Terheyden's NPI number?

The NPI number for Saskia Van Terheyden is 1669112512. It was assigned to this individual provider in the NPPES registry on March 30, 2022.

Where is Saskia Van Terheyden located?

Saskia Van Terheyden practices at 4320 Seminary Rd, Alexandria, VA 22304. The listed phone number is (703) 504-3000.

What is Saskia Van Terheyden's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Saskia Van Terheyden enrolled in Medicare?

Yes. Saskia Van Terheyden is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Saskia Van Terheyden's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Saskia Van Terheyden reassigns Medicare benefits to Alexandria Springfield Emergency Physicians PC (Alexandria, VA). The 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 Saskia Van Terheyden'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 Saskia Van Terheyden was last updated on July 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.