IndividualActive
Sarah Ernst, RN
NPI 1619811650 · Registered Nurse · Madison, WI
Sarah Ernst, RN is a Registered Nurse provider in Madison, WI (NPI 1619811650).
Provider details
- NPI number
- 1619811650
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- 189825-30 (WI)
Specialties & taxonomies
Nursing Service Providers
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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.
Practice location
2500 Overlook Ter
Madison, WI 53705-2254
Phone: (608) 256-1901
Street-level locationGet directions
Mailing address
5063 Marathon Dr
Madison, WI 53705-4712
Registry dates
- Enumerated
- 2026-04-20
- Last updated
- 2026-04-20
- Certified
- 2026-04-19
Frequently asked questions
- What is Sarah Ernst's NPI number?
- Sarah Ernst's National Provider Identifier (NPI) is 1619811650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Ernst's specialty?
- Sarah Ernst is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Sarah Ernst located?
- Sarah Ernst's practice location on file with NPPES is 2500 Overlook Ter, Madison, WI 53705-2254.
- What is Sarah Ernst's phone number?
- The practice phone number listed in the NPPES registry for Sarah Ernst is (608) 256-1901.
- Is Sarah Ernst's NPI active?
- Yes — Sarah Ernst's NPI (1619811650) is active in the NPPES registry as of the last update on 2026-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.