Karen Heffernan, FNP
NPI 1265732457 · Family Nurse Practitioner · Chicago, IL
Karen Heffernan, FNP is a Family Nurse Practitioner provider in Chicago, IL (NPI 1265732457).
Provider details
- NPI number
- 1265732457
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 209.008353 (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
15 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
- 2010-10-22
- Last updated
- 2011-05-09
Frequently asked questions
- What is Karen Heffernan's NPI number?
- Karen Heffernan's National Provider Identifier (NPI) is 1265732457, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Heffernan's specialty?
- Karen Heffernan is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Heffernan located?
- Karen Heffernan's practice location on file with NPPES is 5841 S Maryland Ave # Mc5100, Chicago, IL 60637-1447.
- What is Karen Heffernan's phone number?
- The practice phone number listed in the NPPES registry for Karen Heffernan is (773) 702-9892.
- Is Karen Heffernan's NPI active?
- Yes — Karen Heffernan's NPI (1265732457) is active in the NPPES registry as of the last update on 2011-05-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.