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

Mark K Williams, PMHNP-BC

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1699696401

Mark K Williams, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner in Marietta, Georgia. Licensed in Georgia. Registered with an NPI since 2026.

Licensed in
GA
In the registry since
2026
What do these letters mean?
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.

See every abbreviation used in this directory →

Practice location Address checks out

1121 Johnson Ferry Rd Ste 450
Marietta, GA 30068-5433
Phone: (770) 694-6349
Show map & directions

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

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence APRN-NP225726 (GA)

Record details

NPI number1699696401
Entity typeIndividual (Type 1)
GenderMale
Credentials PMHNP-BC
Sole proprietorNo
NPI enumeratedJuly 25, 2026
Last updated in NPPESJuly 25, 2026
Certification dateJuly 25, 2026

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