William Cotter, M.D.
NPI 1124282934 · Internal Medicine Physician · North Chicago, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Cotter, M.D. is a Internal Medicine Physician provider in North Chicago, IL (NPI 1124282934).
Provider details
- NPI number
- 1124282934
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036-123434 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2008-07-11
- Last updated
- 2020-02-27
- Certified
- 2020-02-27
Frequently asked questions
- What is William Cotter's NPI number?
- William Cotter's National Provider Identifier (NPI) is 1124282934, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Cotter's specialty?
- William Cotter is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Cotter located?
- William Cotter's practice location on file with NPPES is 3001 Green Bay Rd, North Chicago, IL 60064-3048.
- What is William Cotter's phone number?
- The practice phone number listed in the NPPES registry for William Cotter is (847) 688-1900.
- Does William Cotter accept Medicare?
- William Cotter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Cotter's NPI active?
- Yes — William Cotter's NPI (1124282934) is active in the NPPES registry as of the last update on 2020-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.