John Kowalski
NPI 1235178708 · Infectious Disease Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Kowalski is a Infectious Disease Physician provider in Chicago, IL (NPI 1235178708).
Provider details
- NPI number
- 1235178708
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036053307 (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
20 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
- 2006-06-06
- Last updated
- 2013-04-26
Frequently asked questions
- What is John Kowalski's NPI number?
- John Kowalski's National Provider Identifier (NPI) is 1235178708, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Kowalski's specialty?
- John Kowalski is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Kowalski located?
- John Kowalski's practice location on file with NPPES is 2020 W Harrison St, Chicago, IL 60612-3741.
- What is John Kowalski's phone number?
- The practice phone number listed in the NPPES registry for John Kowalski is (312) 572-4739.
- Does John Kowalski accept Medicare?
- John Kowalski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Kowalski's NPI active?
- Yes — John Kowalski's NPI (1235178708) is active in the NPPES registry as of the last update on 2013-04-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.