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

Dr. Benjamin Hardwick Leach, MD

Individual provider Internal Medicine Physician · NPI 1508053174

Dr. Benjamin Hardwick Leach, MD practises Internal Medicine in Walla Walla, Washington. Graduated from University of Texas Southwestern Medical School at Dallas in 2005, 21 years ago. Practices with Providence Health and Services - Washington, a 264-clinician group and accepts Medicare assignment. Licensed in Oregon and Washington.

Years since qualifying
21
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
OR, WA
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

401 W Poplar St Hospitalists
Walla Walla, WA 99362-2846 Not confirmed with CMS for 14 years — call before visiting
Phone: (509) 522-5145
Fax: (509) 522-5184
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD60212129 (WA)
Internal Medicine Physician Taxonomy 207R00000X · Licence LL16175 (OR)

Record details

NPI number1508053174
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 27, 2007
Last updated in NPPESMarch 22, 2012

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 2005 (21 years in practice)
Group practice Providence Health And Services - Washington — 264 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 patients254
Services billed 699 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

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. Those with a page here are linked.

  • Kadlec Regional Medical Center Hospital · Richland, WA
  • Providence Holy Cross Medical Center Hospital · Mission Hills, CA
  • Providence St Mary Medical Center Hospital · Walla Walla, WA

Colleagues at Providence Health and Services - Washington

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 264 clinicians in the practice; 12 are shown here.

Other providers in Walla Walla