Holly Onsager, MSN
NPI 1114274107 · Registered Nurse · Milwaukee, WI
Holly Onsager, MSN is a Registered Nurse provider in Milwaukee, WI (NPI 1114274107).
Provider details
- NPI number
- 1114274107
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- MSN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 658995-30 (WI)
Specialties & taxonomies
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-08-08
- Last updated
- 2012-08-08
Frequently asked questions
- What is Holly Onsager's NPI number?
- Holly Onsager's National Provider Identifier (NPI) is 1114274107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Holly Onsager's specialty?
- Holly Onsager is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Holly Onsager located?
- Holly Onsager's practice location on file with NPPES is 2014 E Webster Pl, Milwaukee, WI 53211-4047.
- What is Holly Onsager's phone number?
- The practice phone number listed in the NPPES registry for Holly Onsager is (414) 962-5766.
- Is Holly Onsager's NPI active?
- Yes — Holly Onsager's NPI (1114274107) is active in the NPPES registry as of the last update on 2012-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.