What is Mary Steffes's NPI number?

Mary Steffes's National Provider Identifier (NPI) is 1497221949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mary Steffes's specialty?

Mary Steffes is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Mary Steffes located?

Mary Steffes's practice location on file with NPPES is 2900 W Oklahoma Ave, Milwaukee, WI 53215-4330.

What is Mary Steffes's phone number?

The practice phone number listed in the NPPES registry for Mary Steffes is (414) 649-6577.

Does Mary Steffes accept Medicare?

Mary Steffes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mary Steffes's NPI active?

Yes — Mary Steffes's NPI (1497221949) is active in the NPPES registry as of the last update on 2023-10-05.

IndividualActiveAccepts Medicare

Mary Steffes, FNP-C

NPI 1497221949 · Nurse Practitioner · Milwaukee, WI

Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Mary Steffes, FNP-C is a Nurse Practitioner provider in Milwaukee, WI (NPI 1497221949).

Provider details

NPI number: 1497221949
Entity type: Individual
Primary specialty: Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Credential: FNP-C
Sex: Female
Sole proprietor: No
License: 10519 (WI)

Specialties & taxonomies

Nurse PractitionerPrimary363L00000XLicense 10519 (WI)
Physician Assistants & Advanced Practice Nursing Providers
Family Nurse Practitioner363LF0000XLicense 10519 (WI)
Physician Assistants & Advanced Practice Nursing Providers
Family Nurse Practitioner363LF0000XLicense 209018508 (IL)
Physician Assistants & Advanced Practice Nursing Providers
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Established profile(72/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
7 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
2 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

2900 W Oklahoma Ave

Milwaukee, WI 53215-4330

Phone: (414) 649-6577

Street-level locationGet directions

More WI providers

Mailing address

Po Box 735044

Chicago, IL 60673-5044

Additional practice locations (1)

251 E Huron St
Chicago, IL 60611-3055
Phone: (312) 926-2000

Enumerated: 2018-10-22
Last updated: 2023-10-05
Certified: 2023-10-05

Frequently asked questions

What is Mary Steffes's NPI number?: Mary Steffes's National Provider Identifier (NPI) is 1497221949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mary Steffes's specialty?: Mary Steffes is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
Where is Mary Steffes located?: Mary Steffes's practice location on file with NPPES is 2900 W Oklahoma Ave, Milwaukee, WI 53215-4330.
What is Mary Steffes's phone number?: The practice phone number listed in the NPPES registry for Mary Steffes is (414) 649-6577.
Does Mary Steffes accept Medicare?: Mary Steffes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Mary Steffes's NPI active?: Yes — Mary Steffes's NPI (1497221949) is active in the NPPES registry as of the last update on 2023-10-05.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.