Nastassja Williams, APN
NPI 1578960969 · Family Nurse Practitioner · Chicago, IL
Nastassja Williams, APN is a Family Nurse Practitioner provider in Chicago, IL (NPI 1578960969).
Provider details
- NPI number
- 1578960969
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 209.012242 (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
11 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
- 2014-12-01
- Last updated
- 2018-02-01
Frequently asked questions
- What is Nastassja Williams's NPI number?
- Nastassja Williams's National Provider Identifier (NPI) is 1578960969, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nastassja Williams's specialty?
- Nastassja Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nastassja Williams located?
- Nastassja Williams's practice location on file with NPPES is 259 E. Erie Lavin Pavilion 16th Floor, Chicago, IL 60611.
- What is Nastassja Williams's phone number?
- The practice phone number listed in the NPPES registry for Nastassja Williams is (312) 695-5620.
- Is Nastassja Williams's NPI active?
- Yes — Nastassja Williams's NPI (1578960969) is active in the NPPES registry as of the last update on 2018-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.