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General Surgery

Diego Muilenburg, MD

Works at hospitals in Springfield, OR · Oregon

Summary

Dr. Diego Muilenburg, MD is a general surgeon at 3355 Riverbend Dr, Suite 400, Springfield, OR 97477. Phone: (541) 222-2402. Accepts Medicare assignment. In 2024, Diego Muilenburg had 142 Original Medicare patients and 326 services. NPI 1295716926. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: General surgeon (Medicare lists General Surgery)
  • Address: 3355 Riverbend Dr, Suite 400, Springfield, OR 97477 · Directions
  • Phone: (541) 222‑2402
  • Medicare: Accepts Medicare assignment
  • Hospital: Sacred Heart Medical Center - Riverbend
  • Group practice: PeaceHealth Medical Group
  • Medical school: Georgetown University School Of Medicine · graduated 2005 (21 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Diego Muilenburg, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Diego Muilenburg accept Medicare assignment?
Yes. Medicare's clinician data says Diego Muilenburg accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Diego Muilenburg see?
In 2024, CMS data shows 142 Original Medicare patients and 326 services for Diego Muilenburg. This counts Original Medicare only and measures volume, not quality.
What is Diego Muilenburg's NPI number?
1295716926. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Diego Muilenburg, 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.

Original Medicare patients142
Services billed to Medicare326
Different services or procedures94
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)49 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)37 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)27 services
  4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)24 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 pressure67%
  • High cholesterol63%
  • Arthritis37%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)36%
  • Anxiety26%
  • Depression23%

Hospitals where Diego Muilenburg works

Medicare's Facility Affiliation Data lists Diego Muilenburg 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.

Practice locations

Addresses where Diego Muilenburg is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Diego Muilenburg as a member of this group (CMS data updated October 2, 2026).

  • PeaceHealth Medical Group255 clinicians in the group

Specialties

Find other General Surgery doctors in Oregon →

Other general surgeons in Springfield

Clinicians with the same Medicare primary specialty in Springfield, OR — not a recommendation.

All general surgeons in Springfield →

Other clinicians in PeaceHealth Medical Group

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

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year2005 (21 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1295716926
CorrectionsReport an error or suggest an update →

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