John Kniaz, DO
NPI 1659470110 · Gastroenterology Physician · Munster, IN
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Kniaz, DO is a Gastroenterology Physician provider in Munster, IN (NPI 1659470110).
Provider details
- NPI number
- 1659470110
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 02000771 (IN)
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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 16000 W. 101st Ave.Dyer, IN 46311Phone: (219) 922-4900Fax: (219) 836-9922
Registry dates
- Enumerated
- 2006-09-21
- Last updated
- 2024-08-13
- Certified
- 2024-08-13
Frequently asked questions
- What is John Kniaz's NPI number?
- John Kniaz's National Provider Identifier (NPI) is 1659470110, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Kniaz's specialty?
- John Kniaz is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is John Kniaz located?
- John Kniaz's practice location on file with NPPES is 9410 Calumet Ave Ste 401, Munster, IN 46321-0018.
- What is John Kniaz's phone number?
- The practice phone number listed in the NPPES registry for John Kniaz is (219) 922-4900.
- Does John Kniaz accept Medicare?
- John Kniaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Kniaz's NPI active?
- Yes — John Kniaz's NPI (1659470110) is active in the NPPES registry as of the last update on 2024-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.