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

Timothy A Davidson, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1124032511

Timothy A Davidson, MD is registered under Pulmonary Disease in Walla Walla, Washington. Graduated from Oregon Health Sciences University School of Medicine in 1992, 34 years ago. Practices with Providence Health and Services - Washington, a 264-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
34
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
WA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

401 W Poplar
Walla Walla, WA 99362
Phone: (509) 522-5940
Fax: (509) 522-5744
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence MD00032527 (WA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence MD00032527 (WA)

Record details

NPI number1124032511
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 28, 2006
Last updated in NPPESMay 10, 2021
Certification dateMay 10, 2021

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice Providence Health And Services - Washington — 264 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients421
Services billed 1,312 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 Providence Health and Services - Washington

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 264 clinicians in the practice; 12 are shown here.