Evonne Tsou, MD
NPI 1457439952 · Internal Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Evonne Tsou, MD is a Internal Medicine Physician provider in Walnut Creek, CA (NPI 1457439952).
Provider details
- NPI number
- 1457439952
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A74760 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 111 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 358 | 132 |
| Levothyroxine Sodium | 287 | 55 |
| Gabapentin | 226 | 59 |
| Amlodipine Besylate | 193 | 75 |
| Tamsulosin Hcl | 149 | 52 |
| Sertraline Hcl | 145 | 31 |
| Furosemide | 129 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-13
Frequently asked questions
- What is Evonne Tsou's NPI number?
- Evonne Tsou's National Provider Identifier (NPI) is 1457439952, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Evonne Tsou's specialty?
- Evonne Tsou is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Evonne Tsou located?
- Evonne Tsou's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is Evonne Tsou's phone number?
- The practice phone number listed in the NPPES registry for Evonne Tsou is (925) 295-4000.
- Does Evonne Tsou accept Medicare?
- Evonne Tsou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Evonne Tsou's NPI active?
- Yes — Evonne Tsou's NPI (1457439952) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.