William Skallerud, MD, MBA
NPI 1558105130 · Family Medicine Physician · Oak Park, IL
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Skallerud, MD, MBA is a Family Medicine Physician provider in Oak Park, IL (NPI 1558105130).
Provider details
- NPI number
- 1558105130
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MBA
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-06-19
- Last updated
- 2024-08-15
- Certified
- 2024-08-15
Frequently asked questions
- What is William Skallerud's NPI number?
- William Skallerud's National Provider Identifier (NPI) is 1558105130, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Skallerud's specialty?
- William Skallerud is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Skallerud located?
- William Skallerud's practice location on file with NPPES is 1 Erie Ct Ste 6160, Oak Park, IL 60302-2510.
- What is William Skallerud's phone number?
- The practice phone number listed in the NPPES registry for William Skallerud is (708) 763-1490.
- Does William Skallerud accept Medicare?
- William Skallerud is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Skallerud's NPI active?
- Yes — William Skallerud's NPI (1558105130) is active in the NPPES registry as of the last update on 2024-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.