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Dr. Benjamin Hardwick Leach, MD

Internal Medicine Physician in Walla Walla, WA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1508053174

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Registry record

Entity type Individual (Type 1)
Name Dr. Benjamin Hardwick Leach
Credential MD
Sex Male
Practice address 401 W Poplar St, Hospitalists, Walla Walla, WA, 99362
Phone (509) 522-5145
Fax (509) 522-5184
Enumeration date Sep 27, 2007
Last updated in NPPES Mar 22, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License LL16175 (OR) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD60212129 (WA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
500635143 Medicaid OR -
1508053174 Medicaid WA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Benjamin Leach?
The National Provider Identifier (NPI) for Benjamin Leach is 1508053174, a Type 1 (individual) record in the CMS NPPES registry.
Where does Benjamin Leach practice?
The practice location on file with NPPES is in Walla Walla, WA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-22.