Mary Steffen, CNP
NPI 1578764353 · Adult Health Nurse Practitioner · Hoffman Estates, IL
Mary Steffen, CNP is a Adult Health Nurse Practitioner provider in Hoffman Estates, IL (NPI 1578764353).
Provider details
- NPI number
- 1578764353
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNP
- Sex
- Female
- Sole proprietor
- No
- License
- 209003949 (IL)
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
- 2007-05-30
- Last updated
- 2010-04-16
Frequently asked questions
- What is Mary Steffen's NPI number?
- Mary Steffen's National Provider Identifier (NPI) is 1578764353, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Steffen's specialty?
- Mary Steffen is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Steffen located?
- Mary Steffen's practice location on file with NPPES is 1555 Barrington Rd, Hoffman Estates, IL 60169-1019.
- What is Mary Steffen's phone number?
- The practice phone number listed in the NPPES registry for Mary Steffen is (847) 882-8448.
- Is Mary Steffen's NPI active?
- Yes — Mary Steffen's NPI (1578764353) is active in the NPPES registry as of the last update on 2010-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.