Jeffrey Williams, D.O.
NPI 1134328644 · Obstetrics & Gynecology Physician · New Lenox, IL
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Williams, D.O. is a Obstetrics & Gynecology Physician provider in New Lenox, IL (NPI 1134328644).
Provider details
- NPI number
- 1134328644
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036117200 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 20201 Crawford AveOlympia Fields, IL 60461-1010Phone: (708) 679-2160
Registry dates
- Enumerated
- 2007-07-13
- Last updated
- 2021-03-17
- Certified
- 2021-03-17
Frequently asked questions
- What is Jeffrey Williams's NPI number?
- Jeffrey Williams's National Provider Identifier (NPI) is 1134328644, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Williams's specialty?
- Jeffrey Williams is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Williams located?
- Jeffrey Williams's practice location on file with NPPES is 305 Vine St, New Lenox, IL 60451-1666.
- What is Jeffrey Williams's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Williams is (815) 463-4746.
- Does Jeffrey Williams accept Medicare?
- Jeffrey Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Williams's NPI active?
- Yes — Jeffrey Williams's NPI (1134328644) is active in the NPPES registry as of the last update on 2021-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.