Joanne Kostowicz-Volm, APNP
NPI 1255403028 · Family Nurse Practitioner · Greenfield, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanne Kostowicz-Volm, APNP is a Family Nurse Practitioner provider in Greenfield, WI (NPI 1255403028).
Provider details
- NPI number
- 1255403028
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 2991-33 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing 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
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
- 2006-11-15
- Last updated
- 2016-03-10
Frequently asked questions
- What is Joanne Kostowicz-Volm's NPI number?
- Joanne Kostowicz-Volm's National Provider Identifier (NPI) is 1255403028, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanne Kostowicz-Volm's specialty?
- Joanne Kostowicz-Volm is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joanne Kostowicz-Volm located?
- Joanne Kostowicz-Volm's practice location on file with NPPES is 4131 W. Loomis Rd, Greenfield, WI 53221-2059.
- What is Joanne Kostowicz-Volm's phone number?
- The practice phone number listed in the NPPES registry for Joanne Kostowicz-Volm is (414) 325-7246.
- Does Joanne Kostowicz-Volm accept Medicare?
- Joanne Kostowicz-Volm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanne Kostowicz-Volm's NPI active?
- Yes — Joanne Kostowicz-Volm's NPI (1255403028) is active in the NPPES registry as of the last update on 2016-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.