Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Aaron M Chavira, DO

Individual provider Internal Medicine Physician · NPI 1780061812

Dr. Aaron M Chavira, DO is a Hospitalist in Corvallis, Oregon. Qualified in 2015, 11 years ago. Practices with St Charles Health System Inc, a 177-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
11
Licensed in
OR
In the registry since
2015
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

3600 NW Samaritan Dr
Corvallis, OR 97330-3737
Phone: (541) 768-5111
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2500 Ne Neff Rd, Bend, OR 97701-6015 — (541) 706-6892

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence DO187639 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence 172258 (OR)

Record details

NPI number1780061812
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 27, 2015
Last updated in NPPESDecember 5, 2025
Certification dateDecember 5, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice St Charles Health System Inc — 177 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients149
Services billed 530 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at St Charles Health System Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 177 clinicians in the practice; 12 are shown here.

Other providers in Corvallis