Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark D Frewing, DPT

Individual provider Physical Therapist · NPI 1902970841

Mark D Frewing, DPT is registered under Physical Therapist in Private Practice in Walla Walla, Washington. Qualified in 2005, 21 years ago. Practices with Privia Medical Group Washington PLLC, a 72-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
21
Licensed in
WA
In the registry since
2006
What do these letters mean?
DPT — Doctor of Physical Therapy
The doctoral degree now required to enter physical therapy practice.

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Practice location Address checks out

55 W Tietan St
Walla Walla, WA 99362-4445
Phone: (509) 525-3720
Fax: (509) 522-1592
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physical Therapist (primary) Taxonomy 225100000X · Licence PT00010293 (WA)

Record details

NPI number1902970841
Entity typeIndividual (Type 1)
GenderMale
Credentials DPT
Sole proprietorNo
NPI enumeratedNovember 20, 2006
Last updated in NPPESNovember 2, 2018

Medicare enrollment

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

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Privia Medical Group Washington Pllc — 72 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients122
Services billed 2,176 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Privia Medical Group Washington PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 72 clinicians in the practice; 12 are shown here.

Other providers in Walla Walla