What is William Faber's NPI number?

William Faber's National Provider Identifier (NPI) is 1992739981, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Faber's specialty?

William Faber is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).

Where is William Faber located?

William Faber's practice location on file with NPPES is 4025 N Western Ave, Chicago, IL 60618-3726.

What is William Faber's phone number?

The practice phone number listed in the NPPES registry for William Faber is (773) 275-7700.

Is William Faber's NPI active?

Yes — William Faber's NPI (1992739981) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

William Faber, M.D.

NPI 1992739981 · Family Medicine Physician · Chicago, IL

William Faber, M.D. is a Family Medicine Physician provider in Chicago, IL (NPI 1992739981).

Provider details

NPI number: 1992739981
Entity type: Individual
Primary specialty: Family Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No

Practice location

4025 N Western Ave

Chicago, IL 60618-3726

Phone: (773) 275-7700

Street-level locationGet directions

More IL providers

Mailing address

2311 W 22nd St

Oak Brook, IL 60523-1225

Specialties & taxonomies

Family Medicine PhysicianPrimary207Q00000X
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(84/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
83% 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.

Enumerated: 2006-07-10
Last updated: 2007-07-08

Frequently asked questions

What is William Faber's NPI number?: William Faber's National Provider Identifier (NPI) is 1992739981, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is William Faber's specialty?: William Faber is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
Where is William Faber located?: William Faber's practice location on file with NPPES is 4025 N Western Ave, Chicago, IL 60618-3726.
What is William Faber's phone number?: The practice phone number listed in the NPPES registry for William Faber is (773) 275-7700.
Is William Faber's NPI active?: Yes — William Faber's NPI (1992739981) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions