Lester Yan, MD
NPI 1497862387 · Family Medicine Physician · Hayward, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lester Yan, MD is a Family Medicine Physician provider in Hayward, WI (NPI 1497862387).
Provider details
- NPI number
- 1497862387
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 33218 (WI)
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
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 5434 W Capitol DrMilwaukee, WI 53216-2298Phone: (414) 442-5400Fax: (414) 442-5468
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2023-03-07
Frequently asked questions
- What is Lester Yan's NPI number?
- Lester Yan's National Provider Identifier (NPI) is 1497862387, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lester Yan's specialty?
- Lester Yan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lester Yan located?
- Lester Yan's practice location on file with NPPES is 13380 W Trepania Rd, Hayward, WI 54843-2186.
- What is Lester Yan's phone number?
- The practice phone number listed in the NPPES registry for Lester Yan is (715) 638-5100.
- Does Lester Yan accept Medicare?
- Lester Yan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lester Yan's NPI active?
- Yes — Lester Yan's NPI (1497862387) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.