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

Mark Warnholz Williams, MD

Individual provider Family Medicine Physician · NPI 1942564281

Mark Warnholz Williams, MD is a Family Practice in Redmond, Oregon. Graduated from University of Nevada School of Medicine in 2012, 14 years ago. Practices with St Charles Health System Inc, a 383-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Alaska and Oregon.

Years since qualifying
14
Trained at
University of Nevada School of Medicine
Licensed in
AK, OR
In the registry since
2012
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

211 NW Larch Ave
Redmond, OR 97756-1357
Phone: (541) 548-2164
Fax: (541) 548-0534
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MD174000 (OR)
Family Medicine Physician Taxonomy 207Q00000X · Licence 6536 (AK)

Record details

NPI number1942564281
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 2, 2012
Last updated in NPPESApril 23, 2020
Certification dateApril 23, 2020
Mailing addressPo Box 5579, Bend, OR 97708-5579

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF NEVADA SCHOOL OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice St Charles Health System Inc — 383 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Redmond