Mary Harker, APN
NPI 1649410994 · Nurse Practitioner · Belvidere, IL
Mary Harker, APN is a Nurse Practitioner provider in Belvidere, IL (NPI 1649410994).
Provider details
- NPI number
- 1649410994
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN
- Sex
- Female
- Sole proprietor
- No
- License
- 209000739 (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
17 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
- 2009-02-26
- Last updated
- 2009-02-26
Frequently asked questions
- What is Mary Harker's NPI number?
- Mary Harker's National Provider Identifier (NPI) is 1649410994, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Harker's specialty?
- Mary Harker is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Harker located?
- Mary Harker's practice location on file with NPPES is 230 W Chrysler Dr, Belvidere, IL 61008-6304.
- What is Mary Harker's phone number?
- The practice phone number listed in the NPPES registry for Mary Harker is (866) 825-3227.
- Is Mary Harker's NPI active?
- Yes — Mary Harker's NPI (1649410994) is active in the NPPES registry as of the last update on 2009-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.