Winona Tzou, MSN, APRN, FNP-C
NPI 1841802527 · Family Nurse Practitioner · Richardson, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Winona Tzou, MSN, APRN, FNP-C is a Family Nurse Practitioner provider in Richardson, TX (NPI 1841802527).
Provider details
- NPI number
- 1841802527
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, APRN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 1007390 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
5 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
183 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 70 | $76 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 65 | $108 |
| Automated Urinalysis Test81003 | 19 | $2 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 15 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 14 | $8 |
Typical Medicare-allowed amounts for these services range $2–$108 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 90 | 42 |
| Levothyroxine Sodium | 72 | 28 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 65 | 59 |
| Azelastine Hcl | 48 | 40 |
| Losartan Potassium | 44 | 20 |
| Atorvastatin Calcium | 36 | 18 |
| Azithromycin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$871 across 47 records (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
Additional practice locations (1)
- 5425 W Spring Creek Pkwy Ste 210Plano, TX 75024-4241Phone: (972) 608-3333Fax: (972) 473-7333
Registry dates
- Enumerated
- 2020-08-23
- Last updated
- 2020-11-19
- Certified
- 2020-11-19
Frequently asked questions
- What is Winona Tzou's NPI number?
- Winona Tzou's National Provider Identifier (NPI) is 1841802527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Winona Tzou's specialty?
- Winona Tzou is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Winona Tzou located?
- Winona Tzou's practice location on file with NPPES is 465 West President George Bush Highway, Richardson, TX 75080.
- What is Winona Tzou's phone number?
- The practice phone number listed in the NPPES registry for Winona Tzou is (469) 677-0267.
- Does Winona Tzou accept Medicare?
- Winona Tzou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Winona Tzou's NPI active?
- Yes — Winona Tzou's NPI (1841802527) is active in the NPPES registry as of the last update on 2020-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.