Nancy Chaiken, APN-C
NPI 1639316334 · Adult Health Nurse Practitioner · Chicago, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Chaiken, APN-C is a Adult Health Nurse Practitioner provider in Chicago, IL (NPI 1639316334).
Provider details
- NPI number
- 1639316334
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN-C
- Sex
- Female
- Sole proprietor
- No
- License
- 209.007291 (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
- 2009-01-16
- Last updated
- 2015-03-02
Frequently asked questions
- What is Nancy Chaiken's NPI number?
- Nancy Chaiken's National Provider Identifier (NPI) is 1639316334, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Chaiken's specialty?
- Nancy Chaiken is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nancy Chaiken located?
- Nancy Chaiken's practice location on file with NPPES is 5145 N California Ave, Chicago, IL 60625-3661.
- What is Nancy Chaiken's phone number?
- The practice phone number listed in the NPPES registry for Nancy Chaiken is (773) 878-8200.
- Does Nancy Chaiken accept Medicare?
- Nancy Chaiken is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Chaiken's NPI active?
- Yes — Nancy Chaiken's NPI (1639316334) is active in the NPPES registry as of the last update on 2015-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.