Alexandra Sontag, FNP-BC
NPI 1154805141 · Family Nurse Practitioner · Chicago, IL
Alexandra Sontag, FNP-BC is a Family Nurse Practitioner provider in Chicago, IL (NPI 1154805141).
Provider details
- NPI number
- 1154805141
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 209017682 (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
7 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
- 2018-09-17
- Last updated
- 2018-09-17
Frequently asked questions
- What is Alexandra Sontag's NPI number?
- Alexandra Sontag's National Provider Identifier (NPI) is 1154805141, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexandra Sontag's specialty?
- Alexandra Sontag is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alexandra Sontag located?
- Alexandra Sontag's practice location on file with NPPES is 42 W Madison St, Chicago, IL 60602-4309.
- What is Alexandra Sontag's phone number?
- The practice phone number listed in the NPPES registry for Alexandra Sontag is (773) 553-3560.
- Is Alexandra Sontag's NPI active?
- Yes — Alexandra Sontag's NPI (1154805141) is active in the NPPES registry as of the last update on 2018-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.