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

Mr. William Jefferson, MA

Individual provider Professional Counselor · NPI 1659419455

Mr. William Jefferson, MA is a Professional Counselor in Gilbert, Arizona. Practices as a sole proprietor. Licensed in Arizona.

Licensed in
AZ
In the registry since
2007
Specialties on file
2
What do these letters mean?
MA — Master of Arts
A graduate arts degree.

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Practice location Address checks out

1150 N Sailors Way
Gilbert, AZ 85234-3612
Phone: (480) 632-0276
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence LMFT 0065 (AZ)
Professional Counselor Taxonomy 101YP2500X · Licence LPC 0229 (AZ)

Record details

NPI number1659419455
Entity typeIndividual (Type 1)
GenderMale
Credentials MA
Sole proprietorYes
NPI enumeratedFebruary 2, 2007
Last updated in NPPESSeptember 11, 2025
Mailing address1150 N Sailors Way, Gilbert, AZ 85234-3612

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