James Brad Diestelhorst, MD

Medicare activity in 2024

Official CMS public-use data for James Brad Diestelhorst, 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. Test to examine how well the lungs exchange gases (94729)385 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)276 services
3. Test to measure expiratory airflow and volume changes before and after medication administration (94060)218 services
4. Test to determine lung volumes using sensors (94726)181 services
5. Test to measure rate of airflow (94375)111 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 cholesterol72%
• COPD53%
• Arthritis49%
• Ischemic heart disease47%
• Heart failure35%

Hospitals where James Brad Diestelhorst works

Medicare's Facility Affiliation Data lists James Brad Diestelhorst 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.

• PeaceHealth St Joseph Medical CenterBellingham, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 500030
• PeaceHealth United General Medical CenterSedro Woolley, WA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 501329

Practice locations

Addresses where James Brad Diestelhorst is enrolled with Medicare (CMS data updated October 2, 2026).

• 2901 Sqaulicum PkwyBellingham, WA 98225 (360) 788‑9373
• 2980 Squalicum PkwyBellingham, WA 98225 (360) 788‑6112
• 3001 Squalicum Pkwy, Suite 14aBellingham, WA 98225 (360) 788‑6934
• 3015 Squalicum PkwyBellingham, WA 98225

Group practices

Medicare enrollment lists James Brad Diestelhorst as a member of this group (CMS data updated October 2, 2026).

• PeaceHealth298 clinicians in the group

Specialties

• Pulmonary Diseaseprimary
• Critical Care (Intensivists)also
• Internal Medicinealso

Find other Pulmonary Disease doctors in Washington →

Other pulmonologists in Bellingham

Clinicians with the same Medicare primary specialty in Bellingham, WA — not a recommendation.

• Ali Al-Hilli, MD
• Amir Gharaei, MD
• Herman Sequeira, MD
• Alison M. Beer, MD
• Omar Jaffer, MD
• Gur Raj S. Deol, MD
• Ahmed H. Sulieman Daoud, MD
• Roman Reznik, MD

All pulmonologists in Bellingham →

Other clinicians in PeaceHealth

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

• Carla E. Savinon, NP
• Rupesh Kumar, MD
• Kelly D. Walker, MD
• Quynh P. Le, DO
• Ali Al-Hilli, MD
• Alisa C. Bray, DO

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