Mark Willer, BCBA
Behavior Analyst · Fairfax, VA
Mark Willer, BCBA is a behavior analyst with a practice address in Fairfax, Virginia, and NPI 1609123835, issued on Aug 7, 2012. Check the license with the Virginia board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Willer
- Credential
- BCBA
- Primary taxonomy
- Behavior Analyst 103K00000X
- Practice location
- 4102 Middle Ridge Dr, Fairfax, VA 22033
- Phone
- (703) 507-9992
- Enumerated
- Aug 7, 2012
- Entity
- Type 1 · individual
Also registered at 4102 Middle Ridge Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brandy CunninghamBehavior Technician1770286106
Verify Mark Willer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
104 behavior analyst records list a Fairfax practice address
They are 104 of the 6,584 NPPES records with a Fairfax practice address, and 2,572 behavior analyst records in Virginia. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 104 in Fairfax → All 2,572 in Virginia → Every provider in Fairfax →
Other behavior analyst records in Virginia
- Alena Abalikhina, BCBA, LBAAshburn, VA1295337624
- Carla AbarcaAlexandria, VA1891267837
- Suhad Abdallah, BCBAMc Lean, VA1457207763
- Hodan AbdiAshburn, VA1508344151
- Kosar AbdiWoodbridge, VA1841112570
- Marwah AbdullahSterling, VA1710488978
- Ashanti Abram, M.S, LBANorth Chesterfield, VA1255100145
- Jessica Acevedo, RBTMc Lean, VA1417463803
- Diana Achim, BCBA, LBAFairfax, VA1982032678
- Katherine Acker, RBTMidlothian, VA1720551849
Common questions
What is Mark Willer, BCBA's NPI number?
Mark Willer, BCBA's National Provider Identifier (NPI) is 1609123835, issued on Aug 7, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark Willer, BCBA located?
The NPPES record lists a practice address at 4102 Middle Ridge Dr, Fairfax, VA, 22033. Phone: (703) 507-9992. Providers update this record themselves, so call before visiting.
How can I verify Mark Willer, BCBA's license?
Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.