William Lou, MD
Neurology Physician · Seattle, WA
William Lou, MD is a neurology physician with a practice address in Seattle, Washington, and NPI 1710340161, issued on Apr 2, 2016. Check the license (Washington MD61087268, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- William Lou
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- MD61087268 WA
Self-reported in NPPES; status is on the state search - Practice location
- 550 17TH Ave, Seattle, WA 98122
- Phone
- (206) 320-2800
- Enumerated
- Apr 2, 2016
- Record last updated
- Jan 14, 2022
- Fax
- (206) 320-2451
- Medicaid ID
- 1710340161 WA
- Medicare enrollment
- Enrolled (PECOS I20210723003232); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 489 in Washington → Look up another NPI →
Also registered at 550 17TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abraham Abu, PA-CPhysician Assistant1710036587
- Sally Alfred, FNP-BCFamily Nurse Practitioner1750585097
- Lisa Caylor, MDNeurology Physician1124108048
- Michael Chen, MD, MSNeurology Physician1558757757
- Charles Cobbs, M.D.Neurological Surgery Physician1497793467
- Matias Costa, MDNeurological Surgery Physician1568032076
Verify William Lou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61087268Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average neurology physician in 2024
194 Medicare Part D claims for 61 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Atorvastatin Calcium64 claims
- Eliquis31 claims
- Levetiracetam22 claims
- Amlodipine Besylate14 claims
- Gabapentin13 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 5 group practices
- Providence Health And Services OregonSammamish, WA
- Providence Health And Services WashingtonSeattle, WA
- Providence Health And Services- WashingtonSeattle, WA
- Providence Medical InstituteSeattle, WA
- Swedish Health ServicesSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Lou among 489 neurology physician records in Washington
William Lou, MD is one of 489 neurology physician records with a practice address in Washington. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 16% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2016 · median 2007 among the 351 with a school on file
- Record last updated2022 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Washington
There are 489 neurology physician records in Washington.
All 489 in Washington → Every provider in Seattle → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Lisa Caylor, MDSeattle, WA 981221124108048
- Michael Doherty, MDSeattle, WA 981221033299953
- Michael Elliott, MDSeattle, WA 981221518986199
- Eric Gierke, MDSeattle, WA 981221265537583
- Steven Hamilton, MDSeattle, WA 981221669409694
- Lily Henson, MDSeattle, WA 981221639252661
- Pravin Khemani, MDSeattle, WA 981221457360836
- Dongmei Liu, MDSeattle, WA 981221679678791
Common questions
What is William Lou, MD's NPI number?
William Lou, MD's National Provider Identifier (NPI) is 1710340161, issued on Apr 2, 2016. An NPI identifies a provider in billing; it is not a license.
Where is William Lou, MD located?
The NPPES record lists a practice address at 550 17TH Ave, Seattle, WA, 98122. Phone: (206) 320-2800. Providers update this record themselves, so call before visiting.
How can I verify William Lou, MD's license?
NPPES lists Washington license number MD61087268, 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 William Lou, MD prescribe under Medicare Part D?
In 2024, William Lou, MD had 194 Medicare Part D claims for 61 beneficiaries; the average among neurology physician prescribers was 1,370. 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.