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

Liam O'Sullivan, MD

Individual provider Emergency Medicine Physician · NPI 1639431133

Liam O'Sullivan, MD practises Emergency Medicine in Wenatchee, Washington. Graduated from University of Arizona College of Medicine in 2015, 11 years ago. Practices with Central Washington Health Services Association, a 702-clinician group and accepts Medicare assignment. Licensed in Arizona and Washington.

Years since qualifying
11
Trained at
University of Arizona College of Medicine
Licensed in
AZ, WA
In the registry since
2012
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

1201 S Miller St
Wenatchee, WA 98801-3201 Not confirmed with CMS for 10 years — call before visiting
Phone: (509) 663-8711
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence MD60546517 (WA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence R73282 (AZ)

Record details

NPI number1639431133
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 11, 2012
Last updated in NPPESNovember 3, 2015

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Central Washington Health Services Association — 702 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients493
Services billed 582 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.

Colleagues at Central Washington Health Services Association

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 702 clinicians in the practice; 12 are shown here.

Other providers in Wenatchee