IndividualActive
Mary Grassl, REGISTERED NURSE
NPI 1558068429 · Registered Nurse · West Allis, WI
Provider details
- NPI number
- 1558068429
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- REGISTERED NURSE
- Sex
- Female
- Sole proprietor
- Yes
- License
- 91223 (WI)
Specialties & taxonomies
Nursing Service Providers
Profile Score
Established profile(68/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 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
2814 S 108th St
West Allis, WI 53227-3224
Phone: (414) 885-3525
Street-level locationGet directions
Mailing address
8444 N 90th St Ste 100
Scottsdale, AZ 85258-4437
Additional practice locations (2)
- 23 W Scott StFond Du Lac, WI 54935-2342Phone: (920) 926-0101
- 1333 College Ave Ste M1South Milwaukee, WI 53172-1150Phone: (414) 775-2500
Registry dates
- Enumerated
- 2023-02-10
- Last updated
- 2023-07-27
- Certified
- 2023-07-27
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.