DR. BENJAMIN HARDWICK LEACH MD
NPI 1508053174
Internal Medicine in Walla Walla, WA
About Dr. Benjamin Hardwick Leach Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BENJAMIN HARDWICK LEACH MD (NPI 1508053174) is an individual internal medicine provider in Walla Walla, Washington, licensed in Washington (MD60212129) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS, is affiliated with Providence St Mary Medical Center, and is a graduate of University Of Texas Southwestern Medical School At Dallas (2005).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Benjamin Hardwick Leach Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Benjamin Leach reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Walla Walla, WA 99362
- Reassigned Medicare billing, Washington enrollment
- 276 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence St Mary Medical Center
Acute Care Hospitals · Walla Walla, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 99362 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALLA WALLA, WA 99362
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Benjamin Leach's NPI number?
The NPI number for Benjamin Leach is 1508053174. It was assigned to this individual provider in the NPPES registry on September 27, 2007.
Where is Benjamin Leach located?
Benjamin Leach practices at 401 W Poplar St Hospitalists, Walla Walla, WA 99362. The listed phone number is (509) 522-5145.
What is Benjamin Leach's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Benjamin Leach enrolled in Medicare?
Yes. Benjamin Leach is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Benjamin Leach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Benjamin Leach reassigns Medicare benefits to Providence Health & Services - Washington (Walla Walla, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Benjamin Leach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Benjamin Leach accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Benjamin Leach as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Benjamin Leach affiliated with any hospitals?
According to CMS data, Benjamin Leach is affiliated with Providence St Mary Medical Center.
When was this NPI record last updated?
The NPPES record for Benjamin Leach was last updated on March 22, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Benjamin Hardwick Leach, MD · NPI 1508053174
Internal Medicine physician in Walla Walla, Washington. Individual provider, active in the CMS NPPES registry since September 27, 2007.
## Identity
- **NPI:** 1508053174 (Entity type: Individual)
- **Enumerated:** September 27, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD60212129 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 401 W POPLAR ST, HOSPITALISTS, Walla Walla, WA 99362-2846
- **Phone:** (509) 522-5145 · **Fax:** (509) 522-5184
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Providence Health & Services - Washington (NPI 1306097126, Walla Walla, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Southwestern Medical School At Dallas, class of 2005
## Record status
- **NPPES last updated:** March 22, 2012
- **Other identifiers:** Medicare PIN G8901052 (WA); Medicaid 500635143 (OR); Medicaid 1508053174 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1508053174) · Data from the CMS NPPES public registry.