DR. JOHN ATHANASIOS KAZIANIS M.D.
NPI 1730348418
Internal Medicine - Pulmonary Disease in Stamford, CT
About Dr. John Athanasios Kazianis M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN ATHANASIOS KAZIANIS M.D. (NPI 1730348418) is an individual pulmonary disease provider in Stamford, Connecticut, licensed in Connecticut (50833) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John Athanasios Kazianis M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Kazianis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
New Haven, CT 06519
- Reassigned Medicare billing, Connecticut enrollment
- 3,728 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06902 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STAMFORD, CT 06902
STAMFORD, CT 06902
STAMFORD, CT 06902
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Kazianis's NPI number?
The NPI number for John Kazianis is 1730348418. It was assigned to this individual provider in the NPPES registry on June 6, 2008.
Where is John Kazianis located?
John Kazianis practices at 190 W Broad St, Stamford, CT 06902. The listed phone number is (203) 348-2437.
What is John Kazianis's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is John Kazianis enrolled in Medicare?
Yes. John Kazianis is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Kazianis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Kazianis reassigns Medicare benefits to 2 organizations: North Shore-Lij Medical PC (Great Neck, NY) and Yale University (New Haven, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Kazianis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Kazianis was last updated on August 27, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John Athanasios Kazianis, M.D. · NPI 1730348418
Pulmonary Disease physician in Stamford, Connecticut. Individual provider, active in the CMS NPPES registry since June 6, 2008.
## Identity
- **NPI:** 1730348418 (Entity type: Individual)
- **Enumerated:** June 6, 2008
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 50833 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 190 W BROAD ST, Stamford, CT 06902-3633
- **Phone:** (203) 348-2437
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY); Yale University (NPI 1124148887, New Haven, CT) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 27, 2013
---
Source: [NPI Profile](https://npiprofile.com/npi/1730348418) · Data from the CMS NPPES public registry.