Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. O'Neal Alfred Walker

Individual provider Clinical Psychologist · NPI 1336419563

Dr. O'Neal Alfred Walker is a Clinical Psychologist in Rockville, Maryland. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2012

Practice location Address checks out

6237 Executive Blvd
Rockville, MD 20852-3906
Phone: (240) 426-5859
Fax: (301) 972-1318
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 04000 (MD)

Record details

NPI number1336419563
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJanuary 4, 2012
Last updated in NPPESFebruary 13, 2025
Certification dateFebruary 13, 2025

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