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SIWEN LIU D.O.
NPI 1972037158
Surgery in Baldwin, WI

Active since April 14, 2017PECOS EnrolledAccepts Medicare Assignment
1100 BERGSLIEN ST, BALDWIN, WI 54002(715) 684-1111(715) 684-1119 Get Directions Write a Review

NPPES record last updated: December 29, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 8, 2023, Jul 18, 2022, Apr 14, 2017 (3 updates tracked since 2017).

About Siwen Liu D.o. NPPES

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

SIWEN LIU D.O. (NPI 1972037158) is an individual surgery provider in Baldwin, Wisconsin, licensed in Wisconsin (81075) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS, is affiliated with Western Wisconsin Health, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1972037158
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameSIWEN LIUCredential: D.O.
Location Address1100 BERGSLIEN STBaldwin, WI 54002-2600
Mailing Address1100 Bergslien StBaldwin, WI 54002-2600 · (715) 684-1111 · Fax (715) 684-1119
Phone(715) 684-1111
Fax(715) 684-1119
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateApril 14, 2017
Last NPPES UpdateDecember 29, 20233 updates tracked since enumeration
NPPES CertifiedDecember 29, 2023
✔ NPI 1972037158 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in WI · 81075
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
1100 BERGSLIEN ST, Baldwin, WI 54002
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Other Names 1

Other Name (5)Wendy Liu D.o.

Secondary Practice Locations 2

Location 12601 E Roosevelt St, Maricopa Integrated Health SystemPhoenix, AZ 85008-4973 · Phone (602) 344-5445 · Fax (602) 344-1185
Location 2100 Woods RdValhalla, NY 10595-1530 · Phone (914) 493-7000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, HealthPartners, Medica and more.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

Siwen Liu D.o. 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 ID941661391
PECOS Enrollment IDI20230801002674
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.

Hospital Affiliations CMS Care Compare

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

Western Wisconsin Health

Critical Access Hospitals · Baldwin, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521347
Location1100 Bergslien StBaldwin, WI 54002 · St. Croix County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54002 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
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
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.

SARAH MICHELLE ANDERSON N.P.
Nurse Practitioner (Family)
1100 BERGSLIEN ST
BALDWIN, WI 54002
St. Croix County (715) 684-1111
DR. EYUEL TEREFE MD
Psychiatry & Neurology (Psychiatry)
1100 BERGSLIEN ST
BALDWIN, WI 54002
St. Croix County (715) 684-1553
ABBEY ARNDT NP
Nurse Practitioner (Family)
1100 BERGSLIEN ST
BALDWIN, WI 54002
St. Croix County (715) 684-1111
DR. SELENA SCHMIT RN, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
1100 BERGSLIEN ST
BALDWIN, WI 54002
St. Croix County (651) 492-0449
ELIZABETH LACY RAU DPT
Physical Therapist
1100 BERGSLIEN ST
BALDWIN, WI 54002
St. Croix County (715) 684-1111
CHRISTINE L VEENENDALL
Registered Nurse
1100 BERGSLIEN ST
BALDWIN, WI 54002
St. Croix County (715) 684-1111
KATIE JO CARSTENS PA-C
Physician Assistant
1100 BERGSLIEN ST
BALDWIN, WI 54002
St. Croix County (715) 684-1101
ALICIA SUND
Nurse Practitioner
1100 BERGSLIEN ST
BALDWIN, WI 54002
St. Croix County (715) 684-1111

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 Siwen Liu's NPI number?

The NPI number for Siwen Liu is 1972037158. It was assigned to this individual provider in the NPPES registry on April 14, 2017. The provider is also known as Wendy Liu D.O..

Where is Siwen Liu located?

Siwen Liu practices at 1100 Bergslien St, Baldwin, WI 54002. The listed phone number is (715) 684-1111.

What is Siwen Liu's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Siwen Liu enrolled in Medicare?

Yes. Siwen Liu 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 Siwen Liu accept?

Health plans from Anthem Blue Cross and Blue Shield, HealthPartners, Medica and Security Health Plan list Siwen Liu 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 Siwen Liu affiliated with any hospitals?

According to CMS data, Siwen Liu is affiliated with Western Wisconsin Health.

When was this NPI record last updated?

The NPPES record for Siwen Liu was last updated on December 29, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.