Jennifer W. Leach, MD

Medicare activity in 2024

Official CMS public-use data for Jennifer W. Leach, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Injection, darbepoetin alfa, 1 microgram (non-esrd use) (J0881)5,420 services
2. Dialysis services, per day, less than full month service (20 years or older) (90970)589 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)199 services
4. Dialysis services, 2-3 physician visits per month (20 years or older) (90961)85 services
5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)63 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Chronic kidney disease75%
• Diabetes62%
• Arthritis48%
• Heart failure47%

Hospitals where Jennifer W. Leach works

Medicare's Facility Affiliation Data lists Jennifer W. Leach at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Dayton General HospitalDayton, WA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 501302
• Grande Ronde HospitalLa Grande, OR · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 381321
• Providence St Mary Medical CenterWalla Walla, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500002
• Wallowa Memorial HospitalEnterprise, OR · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 381306

Practice locations

Addresses where Jennifer W. Leach is enrolled with Medicare (CMS data updated October 2, 2026).

• 380 Chase AveWalla Walla, WA 99362 (509) 897‑3333

Group practices

Medicare enrollment lists Jennifer W. Leach as a member of this group (CMS data updated October 2, 2026).

• Providence Health and Services - Washington270 clinicians in the group

Specialties

• Nephrologyprimary
• Internal Medicinealso

Find other Nephrology doctors in Washington →

Other nephrologists in Washington

Clinicians with the same Medicare primary specialty in Washington — not a recommendation.

• Shehzad Rehman, MD
• Vo D. Nguyen, MD
• Michael G. Mondress, MD
• Inderpreet S. Sekhon, MD
• Elhami Hannan, MD
• Benjamin Lidgard, MD
• Parampreet S. Ghuman, MD
• Dmitri V. Vasin, MD

All nephrologists in Washington →

Other clinicians in Providence Health and Services - Washington

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• David T. Maxwell, MD
• Mary J. Buriani
• Paul L. McLain, MD
• Charles T. Koon, MD
• Kortney K. Killgore Smith, NP
• Robert A. Billingsley, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians