Benjamin Hardwick Leach, MD
Internal Medicine Physician · Walla Walla, WA
Benjamin Hardwick Leach, MD is an internal medicine physician with a practice address in Walla Walla, Washington, and NPI 1508053174, issued on Sep 27, 2007. Check the license (Washington MD60212129, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Benjamin Hardwick Leach
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD60212129 WA
LL16175 OR
Self-reported in NPPES; status is on the state search - Practice location
- 401 W Poplar St, Walla Walla, WA 99362
- Phone
- (509) 522-5145
- Enumerated
- Sep 27, 2007
- Record last updated
- Mar 22, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (509) 522-5184
- Medicaid IDs
- 500635143 OR
1508053174 WA - Medicare enrollment
- Enrolled (PECOS I20110726000465); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2005
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 401 W Poplar St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alexandra Baker, DNPNurse Practitioner1306473202
Verify Benjamin Hardwick Leach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60212129Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
356 Medicare Part D claims for 120 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 19 claims were for opioids.
Most prescribed
- Furosemide26 claims
- Cefdinir25 claims
- Atorvastatin Calcium22 claims
- Eliquis19 claims
- Clopidogrel16 claims
- Metoprolol Succinate15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $164.94
1 payment: food and beverage; the largest payer was Edwards Lifesciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Providence Health And Services - WashingtonWalla Walla, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin Hardwick Leach among 3,079 internal medicine physician records in Washington
Benjamin Hardwick Leach, MD is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2005 · median 2006 among the 1,852 with a school on file
- Record last updated2012 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 internal medicine physician records list a practice address in Walla Walla
They are 37 of the 1,276 NPPES records with a practice address in Walla Walla, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Walla Walla → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kevin Andrews, MDWalla Walla, WA 993621174513873
- Eric Ball, M.D.Walla Walla, WA 993621275507485
- Karen Geheb, M.D.Walla Walla, WA 993621972532745
- Dan Grinstead, M.D.Walla Walla, WA 993621881668010
- Philip Hooper, MDWalla Walla, WA 993621154307742
- Eric Jauhiainen, M.D.Walla Walla, WA 993621235103466
- Stevie Mazyck, MDWalla Walla, WA 993621902835697
- Patricia McIlvaine, M.D.Walla Walla, WA 993621689648594
Common questions
What is Benjamin Hardwick Leach, MD's NPI number?
Benjamin Hardwick Leach, MD's National Provider Identifier (NPI) is 1508053174, issued on Sep 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Hardwick Leach, MD located?
The NPPES record lists a practice address at 401 W Poplar St, Walla Walla, WA, 99362. Phone: (509) 522-5145. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Hardwick Leach, MD's license?
NPPES lists Washington license number MD60212129, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Benjamin Hardwick Leach, MD prescribe under Medicare Part D?
In 2024, Benjamin Hardwick Leach, MD had 356 Medicare Part D claims for 120 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.