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MARIE BERNADETTE GASTON DIEZ F.N.P.
NPI 1568488138
Nurse Practitioner - Family in Fairfax, VA

Active since July 15, 2006PECOS EnrolledAccepts Medicare Assignment
8505 ARLINGTON BLVD, SUITE 400, FAIRFAX, VA 22031(571) 226-5600(571) 423-5067 Get Directions Write a Review

NPPES record last updated: December 19, 2012. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Marie Bernadette Gaston Diez F.n.p. NPPES

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

MARIE BERNADETTE GASTON DIEZ F.N.P. (NPI 1568488138) is an individual family provider in Fairfax, Virginia, licensed in Virginia (0001135171) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of Marymount University (1995).

NPPES Registry Identity

NPI1568488138
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMARIE BERNADETTE GASTON DIEZCredential: F.N.P.
Location Address8505 ARLINGTON BLVD, SUITE 400Fairfax, VA 22031
Mailing Address8505 Arlington Blvd, Suite 400Fairfax, VA 22033 · (571) 226-5600 · Fax (571) 423-5067
Phone(571) 226-5600
Fax(571) 423-5067
Sole ProprietorNo
Medical School CMSMarymount UniversityGraduated 1995
Enumeration DateJuly 15, 2006
Last NPPES UpdateDecember 19, 2012
✔ NPI 1568488138 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in VA · 0001135171
8505 ARLINGTON BLVD, Fairfax, VA 22031
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINQ54517VA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marie Bernadette Gaston Diez F.n.p. 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.

PECOS PAC ID3779500228
PECOS Enrollment IDI20051025000221, I20111024000080
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22031 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.

HEIDI OSTRENG VATANKA DDS
Dentist (Pediatric Dentistry)
8505 ARLINGTON BLVD, STE 370
FAIRFAX, VA 22031
Fairfax County (703) 849-1415
NORTHERN VIRGINIA CARDIOLOGY ASSOCIATES, PC
Internal Medicine (Cardiovascular Disease)
8505 ARLINGTON BLVD, SUITE 200
FAIRFAX, VA 22031
Fairfax County (703) 573-2360
LYNNE PEI-LAN YAO MD
Pediatrics (Pediatric Nephrology)
8505 ARLINGTON BLVD, SUITE 100
FAIRFAX, VA 22031
Fairfax County (703) 970-2600
NORTHERN VIRGINIA ONCOLOGY GROUP, P.C.
Specialist
8505 ARLINGTON BLVD, SUITE 400
FAIRFAX, VA 22031
Fairfax County (703) 560-3205
DERMATOLOGY AND DERMATOLOGIC SURGERY, INC.
Specialist
8505 ARLINGTON BLVD, SUITE 210
FAIRFAX, VA 22031
Fairfax County (703) 846-0076
MARY E PALM NP
Nurse Practitioner
8505 ARLINGTON BLVD, SUITE 450
FAIRFAX, VA 22031
Fairfax County (703) 280-1234
MRS. ALEXANDRA L RIZEK PA-C
Physician Assistant
8505 ARLINGTON BLVD, SUITE 200
FAIRFAX, VA 22031
Fairfax County (703) 698-8525
MOHAMMAD RAHIMI DDS
Dentist
8505 ARLINGTON BLVD
FAIRFAX, VA 22031
Fairfax County (703) 705-2277

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 Marie Bernadette Diez's NPI number?

The NPI number for Marie Bernadette Diez is 1568488138. It was assigned to this individual provider in the NPPES registry on July 15, 2006.

Where is Marie Bernadette Diez located?

Marie Bernadette Diez practices at 8505 Arlington Blvd Suite 400, Fairfax, VA 22031. The listed phone number is (571) 226-5600.

What is Marie Bernadette Diez's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Marie Bernadette Diez enrolled in Medicare?

Yes. Marie Bernadette Diez 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.

When was this NPI record last updated?

The NPPES record for Marie Bernadette Diez was last updated on December 19, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.