MR. MARK WILLER BCBA
NPI 1609123835
Behavior Analyst in Fairfax, VA

Q: What is Mark Willer's NPI number?

The NPI number for Mark Willer is 1609123835. It was assigned to this individual provider in the NPPES registry on August 7, 2012.

Q: What is Mark Willer's specialty?

The primary specialty registered for this NPI is Behavior Analyst with taxonomy code 103K00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Willer was last updated on August 7, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.

Active since August 07, 2012

4102 MIDDLE RIDGE DR, FAIRFAX, VA 22033(703) 507-9992 Get Directions Write a Review

NPPES record last updated: August 7, 2012. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Mr. Mark Willer Bcba NPPES

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

MR. MARK WILLER BCBA (NPI 1609123835) is an individual behavior analyst provider in Fairfax, Virginia, licensed in Virginia (1-12-11579) and active in the NPI registry since August 2012.

NPPES Registry Identity

NPI1609123835

Entity TypeIndividualMale

Primary Taxonomy103K00000X

Provider Legal NameMR. MARK WILLERCredential: BCBA

Location Address4102 MIDDLE RIDGE DRFairfax, VA 22033-3226

Mailing Address4102 Middle Ridge DrFairfax, VA 22033 · (703) 507-9992

Phone(703) 507-9992

Sole ProprietorYes

Enumeration DateAugust 7, 2012

✔ NPI 1609123835 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyBehavior AnalystBehavioral Health & Social Service Providers

Taxonomy Code103K00000X

License✔ Licensed in VA · 1-12-11579

Definition

A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans.

4102 MIDDLE RIDGE DR, Fairfax, VA 22033

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Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BRANDY CUNNINGHAM

Case Manager/Care Coordinator

4102 MIDDLE RIDGE DR
FAIRFAX, VA 22033

Fairfax County (312) 450-9374

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 Mark Willer's NPI number?

The NPI number for Mark Willer is 1609123835. It was assigned to this individual provider in the NPPES registry on August 7, 2012.

Where is Mark Willer located?

Mark Willer practices at 4102 Middle Ridge Dr, Fairfax, VA 22033. The listed phone number is (703) 507-9992.

What is Mark Willer's specialty?

The primary specialty registered for this NPI is Behavior Analyst with taxonomy code 103K00000X.

When was this NPI record last updated?

The NPPES record for Mark Willer was last updated on August 7, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.