Thao Nguyen, DO
NPI 1689609364 · Family Medicine Physician · Friendship, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thao Nguyen, DO is a Family Medicine Physician provider in Friendship, WI (NPI 1689609364).
Provider details
- NPI number
- 1689609364
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- DO25094 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$100 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2021-10-04
- Certified
- 2021-10-04
Frequently asked questions
- What is Thao Nguyen's NPI number?
- Thao Nguyen's National Provider Identifier (NPI) is 1689609364, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thao Nguyen's specialty?
- Thao Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thao Nguyen located?
- Thao Nguyen's practice location on file with NPPES is 402 W Lake St, Friendship, WI 53934-9699.
- What is Thao Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Thao Nguyen is (608) 339-3331.
- Does Thao Nguyen accept Medicare?
- Thao Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thao Nguyen's NPI active?
- Yes — Thao Nguyen's NPI (1689609364) is active in the NPPES registry as of the last update on 2021-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.