Liam O'Sullivan, M.D.
Emergency Medicine Physician · Wenatchee, WA
Liam O'Sullivan, M.D. is an emergency medicine physician with a practice address in Wenatchee, Washington, and NPI 1639431133, issued on Jun 11, 2012. Check the license (Washington MD60546517, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Liam O'Sullivan
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- MD60546517 WA
R73282 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1201 S Miller St, Wenatchee, WA 98801
- Phone
- (509) 663-8711
- Enumerated
- Jun 11, 2012
- Record last updated
- Nov 3, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 1639431133 WA
- Medicare enrollment
- Enrolled (PECOS I20150828001632); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,459 in Washington → Look up another NPI →
Also registered at 1201 S Miller St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Farah Abdulrazzak, MDFamily Medicine Physician1306533328
- Andrew AbovianHospitalist Physician1669909107
- Glenn Adams, PHARM.DPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1659700037
- Amith Ahluwalia, MDHematology & Oncology Physician1497231773
- Kathleen Allen, PA-CMedical Physician Assistant1134227234
- Richard Allen, PA-CPhysician Assistant1508856410
Verify Liam O'Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60546517Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average emergency medicine physician in 2024
285 Medicare Part D claims for 200 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 55 claims were for opioids.
Most prescribed
- Morphine Sulfate30 claims
- Amoxicillin-Clavulanate Potass19 claims
- Cephalexin19 claims
- Prednisone18 claims
- Hydromorphone Hcl17 claims
- Ondansetron Odt17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Central Washington Health Services AssociationWenatchee, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Liam O'Sullivan among 1,459 emergency medicine physician records in Washington
Liam O'Sullivan, M.D. is one of 1,459 emergency medicine physician records with a practice address in Washington. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 69% of them.
- NPI issued2012 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2015 · median 2010 among the 851 with a school on file
- Record last updated2015 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 emergency medicine physician records list a practice address in Wenatchee
They are 36 of the 2,290 NPPES records with a practice address in Wenatchee, and 1,459 emergency medicine physician records in Washington.
All 1,459 in Washington → Every provider in Wenatchee → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Faith Cowgill, MDWenatchee, WA 988011871583146
- John Crane, MDWenatchee, WA 988011891776464
- Thomas Ettinger, MDWenatchee, WA 988011639150345
- William Gotthold, MDWenatchee, WA 988011376574236
- Christopher Hughes, MDWenatchee, WA 988011366485153
- Lance Jobe, MDWenatchee, WA 988011487638730
- Michael Parnell, MDWenatchee, WA 988011790766400
- Timothy Riesenberger, M.D.Wenatchee, WA 988011689616302
Common questions
What is Liam O'Sullivan, M.D.'s NPI number?
Liam O'Sullivan, M.D.'s National Provider Identifier (NPI) is 1639431133, issued on Jun 11, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Liam O'Sullivan, M.D. located?
The NPPES record lists a practice address at 1201 S Miller St, Wenatchee, WA, 98801. Phone: (509) 663-8711. Providers update this record themselves, so call before visiting.
How can I verify Liam O'Sullivan, M.D.'s license?
NPPES lists Washington license number MD60546517, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Liam O'Sullivan, M.D. prescribe under Medicare Part D?
In 2024, Liam O'Sullivan, M.D. had 285 Medicare Part D claims for 200 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.