Karen Grumstrup, NURSE PRACTITIONER
NPI 1275756611 · Nurse Practitioner · Milwaukee, WI
Karen Grumstrup, NURSE PRACTITIONER is a Nurse Practitioner provider in Milwaukee, WI (NPI 1275756611).
Provider details
- NPI number
- 1275756611
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NURSE PRACTITIONER
- Sex
- Female
- Sole proprietor
- No
- License
- 133735 (WI)
Specialties & taxonomies
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
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karen Grumstrup's NPI number?
- Karen Grumstrup's National Provider Identifier (NPI) is 1275756611, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Grumstrup's specialty?
- Karen Grumstrup is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Grumstrup located?
- Karen Grumstrup's practice location on file with NPPES is 2207 W Wisconsin Ave, Milwaukee, WI 53233-1923.
- What is Karen Grumstrup's phone number?
- The practice phone number listed in the NPPES registry for Karen Grumstrup is (414) 931-8181.
- Is Karen Grumstrup's NPI active?
- Yes — Karen Grumstrup's NPI (1275756611) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.