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

Mark A Williams, CADCIII/LPC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1598065807

Mark A Williams, CADCIII/LPC is a Mental Health Counselor in Bend, Oregon. Qualified in 2007, 19 years ago. Practices with Rimrock Trails Treatment Services, a 10-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
19
Licensed in
OR
In the registry since
2010
Specialties on file
2

Practice location Address checks out

548 SW 13th St
Bend, OR 97702-3184
Phone: (541) 388-8459
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X (OR)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 11-06-113 (OR)

Record details

NPI number1598065807
Entity typeIndividual (Type 1)
GenderMale
Credentials CADCIII/LPC
Sole proprietorNo
NPI enumeratedNovember 2, 2010
Last updated in NPPESDecember 6, 2022
Certification dateSeptember 26, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Rimrock Trails Treatment Services — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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