Dr. Siwen Liu, DO
- Part D claims, 2024
- 67
- Hospital affiliations
- 1
- Industry payments
- $7,005
- Medical groups
- 2
- State license
- 1
- Practice address
- 1100 Bergslien St, Baldwin, WI 54002
- Practice phone
- Call (715) 684-1111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Western Wisconsin Health
Rural Health Clinic - Hospital-Owned · Baldwin, Wisconsin
Find Dr. Liu's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Siwen Liu is a general surgeon in Baldwin, Wisconsin
Dr. Liu practices at Western Wisconsin Health in Baldwin, Wisconsin.
Dr. Liu's NPI, 1972037158, was assigned on April 14, 2017. Dr. Liu holds Wisconsin license 81075.
- NPI
- 1972037158NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941661391
- NPI enumeration date
- April 14, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (715) 684-1111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Siwen Liu practices at Western Wisconsin Health in Baldwin, Wisconsin
Dr. Liu's primary practice is Western Wisconsin Health, at 1100 Bergslien St, Baldwin, WI 54002. The practice phone is (715) 684-1111.
- Western Wisconsin Health1100 Bergslien St, Baldwin, WI 54002Phone(715) 684-1111
Source: Dmand AI Affiliation Data
Dr. Siwen Liu is affiliated with 2 sites of care and 2 medical groups
Dr. Liu's primary practice is Western Wisconsin Health in Baldwin, Wisconsin. Dr. Liu is also affiliated with Western Wisconsin Health. The medical group on file is Western Wisconsin Health. Dmand AI also links Dr. Liu to 1 more medical group, named with a free account. Dr. Liu's employer is on file too: a rural health clinic (rhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Siwen Liu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Liu practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Western Wisconsin Health | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Siwen Liu is one of 565 general surgeons in Wisconsin
Surgery is Dr. Liu's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Liu is licensed in Wisconsin.
Specialties and state licenses
- Surgery, WisconsinPrimary
General surgeons near Dr. Liu
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Siwen Liu's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Liu's median patient age at 58, with 55% women.
Dr. Liu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. Siwen Liu wrote 67 Medicare Part D claims in 2024
In 2024, Dr. Liu wrote 67 Medicare Part D claims for 32 patients. 97% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $108 in total drug cost. In 2022, CMS named 11 claims across 1 drug.
Dr. Liu's Part D claims by kind of drug, 2024
- Generic65 claims97%
- Brand-name and other2 claims3%
Dr. Liu's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Liu's Part D claims, 2024
- Opioids22%15 of 67 claims
- Antibiotics27%18 of 67 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 112024: 129%
Drugs named by CMS: 1 in 2024, 1 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Siwen Liu takes part in Medicare
Dr. Liu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Siwen Liu received $7,005 in industry payments from 2023 to 2025
CMS Open Payments shows 41 general payments to Dr. Liu from 5 drug and device companies from 2023 to 2025. Education make up the largest share, 43% of the total. Intuitive Surgical, Inc. paid the most, $3,239.
General payments to Dr. Liu by program year, 2023 to 2025
General payments to Dr. Liu by kind, 2023 to 2025
- Education$3,00043%
- Travel and lodging$2,24532%
- Food and beverage$1,75925%
Companies that paid Dr. Liu the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Siwen Liu's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Siwen Liu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Siwen Liu's NPI number?
Dr. Siwen Liu's NPI number is 1972037158. It was assigned on April 14, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Siwen Liu?
Dr. Siwen Liu is a general surgeon in Baldwin, Wisconsin. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Siwen Liu practice?
Dr. Liu practices at 1100 Bergslien St, Baldwin, WI 54002. Dr. Liu's primary practice is Western Wisconsin Health in Baldwin, Wisconsin. Dmand AI also links Dr. Liu to 1 medical group.
What is Dr. Siwen Liu's office phone number?
The practice phone on file for Dr. Liu is (715) 684-1111.
What is Dr. Siwen Liu's medical license number?
Dr. Liu holds Wisconsin license 81075.
Which hospitals is Dr. Siwen Liu affiliated with?
Dr. Liu is affiliated with Western Wisconsin Health.
What medical group is Dr. Siwen Liu part of?
Dr. Liu is linked to Western Wisconsin Health. Dmand AI links Dr. Liu to 1 more medical group.
Does Dr. Siwen Liu accept Medicare?
Yes. CMS lists Dr. Liu as accepting Medicare assignment.
What drugs does Dr. Siwen Liu prescribe most?
In 2024 Medicare Part D data, Dr. Liu's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass.
Has Dr. Siwen Liu received payments from drug or device companies?
CMS Open Payments shows $7,005 in general payments to Dr. Liu from 5 companies from 2023 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Siwen Liu been practicing?
Dr. Liu graduated from medical school in 2017, 9 years ago.
Selling to surgery practices?
See general surgeons in Wisconsin by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card