JOHN MICHAEL KARAMICHALIS MD
NPI 1467651083
Thoracic Surgery (Cardiothoracic Vascular Surgery) in New York, NY
About John Michael Karamichalis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN MICHAEL KARAMICHALIS MD (NPI 1467651083) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in New York, New York, licensed in New York (308870) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of Other (1993).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Michael Karamichalis Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show John Karamichalis reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10032
- Reassigned Medicare billing, New York enrollment
- 3,922 clinicians in this Medicare group
Yardley, PA 19067
- Reassigned Medicare billing, Pennsylvania enrollment
- 479 clinicians in this Medicare group
Belcamp, MD 21017
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Indianapolis, IN 46260
- Reassigned Medicare billing, Indiana enrollment
- 294 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 10032 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10032
NEW YORK, NY 10032
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 Karamichalis's NPI number?
The NPI number for John Karamichalis is 1467651083. It was assigned to this individual provider in the NPPES registry on July 13, 2007. The provider is also known as Dr. Ioannis Michael Karamichalis MD.
Where is John Karamichalis located?
John Karamichalis practices at 3959 Broadway, New York, NY 10032. The listed phone number is (212) 305-0914.
What is John Karamichalis's specialty?
The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.
Is John Karamichalis enrolled in Medicare?
Yes. John Karamichalis is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Karamichalis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Karamichalis reassigns Medicare benefits to 4 organizations: Trustees Of Columbia University In The City Of New York (New York, NY), Stc Pediatrics LLC (Yardley, PA), Johns Hopkins University (Belcamp, MD) and St Vincent Pediatric Subspecialties (Indianapolis, IN). 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 Karamichalis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Karamichalis accept?
Health plans from CareSource list John Karamichalis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Karamichalis was last updated on October 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.
# John Michael Karamichalis, MD · NPI 1467651083
Thoracic Surgery (Cardiothoracic Vascular Surgery) physician in New York, New York. Individual provider, active in the CMS NPPES registry since July 13, 2007.
## Identity
- **NPI:** 1467651083 (Entity type: Individual)
- **Enumerated:** July 13, 2007
- **Primary specialty:** Thoracic Surgery (Cardiothoracic Vascular Surgery) · taxonomy 208G00000X
- **State license:** 308870 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 3959 BROADWAY, New York, NY 10032-1559
- **Phone:** (212) 305-0914
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Trustees Of Columbia University In The City Of New York (NPI 1477068971, New York, NY); Stc Pediatrics LLC (NPI 1811532518, Yardley, PA); Johns Hopkins University (NPI 1376342774, Belcamp, MD); St Vincent Pediatric Subspecialties (NPI 1013967736, Indianapolis, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** October 14, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1467651083) · Data from the CMS NPPES public registry.