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

Mark Farley

Individual provider Internal Medicine Physician · NPI 1164518353

Mark Farley practises Internal Medicine in Toppenish, Washington. Graduated from Oregon Health Sciences University School of Medicine in 1985, 41 years ago. Practices with One Community Health, a 53-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
41
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
WA
In the registry since
2006
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Practice location Address checks out

510 W 1st Ave
Toppenish, WA 98948-1564
Phone: (509) 865-5600
Fax: (509) 865-5783
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 518 W 1st Ave, Toppenish, WA 98948-1564 — (509) 865-5600

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD00026408 (WA)

Record details

NPI number1164518353
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedOctober 5, 2006
Last updated in NPPESMarch 17, 2021
Certification dateMarch 17, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 1985 (41 years in practice)
Group practice One Community Health — 53 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients42
Services billed 104 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at One Community Health

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 53 clinicians in the practice; 12 are shown here.

Other providers in Toppenish