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WILLIAM LOU MD
NPI 1710340161
Psychiatry & Neurology - Neurology in Seattle, WA

Active since April 02, 2016PECOS EnrolledAccepts Medicare Assignment
550 17TH AVE, SEATTLE, WA 98122(206) 320-2800(206) 320-2451 Get Directions Write a Review

NPPES record last updated: January 14, 2022. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jan 14, 2022, Jul 23, 2021, Apr 2, 2016 (3 updates tracked since 2016).

About William Lou Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM LOU MD (NPI 1710340161) is an individual neurology provider in Seattle, Washington, licensed in Washington (MD61087268) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Swedish Medical Center / Cherry Hill, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1710340161
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameWILLIAM LOUCredential: MD
Location Address550 17TH AVESeattle, WA 98122-5788
Mailing AddressPo Box 25608Salt Lake City, UT 84125-0608 · (206) 320-4476 · Fax (206) 568-7043
Phone(206) 320-2800
Fax(206) 320-2451
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateApril 2, 2016
Last NPPES UpdateJanuary 14, 20223 updates tracked since enumeration
NPPES CertifiedJanuary 14, 2022
✔ NPI 1710340161 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in WA · MD61087268
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
550 17TH AVE, Seattle, WA 98122
Open in Google Maps ↗

Other Identifiers 1

Medicaid1710340161WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Lou Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9830481241
PECOS Enrollment IDI20210723003232
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
118 services82 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
33 services21 patients
Telephone, internet, or electronic health record assessment and management with written report by consulting physician, at least 5 minutes 99451
This service involves a consulting physician assessing your health condition via a phone or internet interaction. The doctor will spend at least 5 minutes discussing your health concerns. Afterwards, a written report summarizing the findings and recommendations will be provided for your reference.
33 services33 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
27 services27 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
26 services26 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Swedish Medical Center / Cherry Hill

Acute Care Hospitals · Seattle, WA
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number500025
Location500 17th AvenueSeattle, WA 98122 · King County
Emergency services

Swedish Edmonds Hospital

Acute Care Hospitals · Edmonds, WA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500026
Location21601 76th Avenue WestEdmonds, WA 98026 · Snohomish County
Emergency services Birthing friendly

Swedish Medical Center

Acute Care Hospitals · Seattle, WA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500027
Location747 BroadwaySeattle, WA 98122 · King County
Emergency services Birthing friendly

Swedish Issaquah

Acute Care Hospitals · Issaquah, WA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500152
Location751 NE Blakely DrIssaquah, WA 98029 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98122 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. JOANNE LYNN OSETSKY ARNP
Nurse Practitioner
550 17TH AVE, STE 110
SEATTLE, WA 98122
King County (206) 320-3470
MR. ANAND ASHOK GERSAPPE MD, PHD
Psychiatry & Neurology (Sleep Medicine)
550 17TH AVE
SEATTLE, WA 98122
King County (206) 386-4744
LIEN B NGUYEN DO
Psychiatry & Neurology (Neurology)
550 17TH AVE
SEATTLE, WA 98122
King County (206) 320-2800
MICHAEL J DOHERTY MD
Psychiatry & Neurology (Neurology)
550 17TH AVE, FIFTH FLOOR
SEATTLE, WA 98122
King County (206) 386-3880
SARAH E STOLZ MD
Psychiatry & Neurology (Sleep Medicine)
550 17TH AVE, STE A20
SEATTLE, WA 98122
King County (206) 386-4744
GARY E OPPENHEIM M.D.
Internal Medicine (Cardiovascular Disease)
550 17TH AVE, SUITE 450
SEATTLE, WA 98122
King County (206) 861-8550
LISA M. CAYLOR MD
Psychiatry & Neurology (Neurology)
550 17TH AVE, FIFTH FLOOR
SEATTLE, WA 98122
King County (206) 386-3880
SWEDISH HEALTH SERVICES
Clinic/Center (Sleep Disorder Diagnostic)
550 17TH AVE, STE A20
SEATTLE, WA 98122
King County (206) 386-4744

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Lou's NPI number?

The NPI number for William Lou is 1710340161. It was assigned to this individual provider in the NPPES registry on April 2, 2016.

Where is William Lou located?

William Lou practices at 550 17th Ave, Seattle, WA 98122. The listed phone number is (206) 320-2800.

What is William Lou's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is William Lou enrolled in Medicare?

Yes. William Lou is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William Lou accept?

Health plans from Blue Cross and Blue Shield of Montana and Premera Blue Cross Blue Shield of Alaska list William Lou as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Lou affiliated with any hospitals?

According to CMS data, William Lou is affiliated with Swedish Medical Center / Cherry Hill, Swedish Edmonds Hospital, Swedish Medical Center and Swedish Issaquah.

When was this NPI record last updated?

The NPPES record for William Lou was last updated on January 14, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.