DR. GERASIMOS F KARALIS MD
NPI 1861076408
Student in an Organized Health Care Education/Training Program in New York, NY
About Dr. Gerasimos F Karalis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GERASIMOS F KARALIS MD (NPI 1861076408) is an individual student in an organized health care education/training program in New York, New York and active in the NPI registry since May 2021. He is enrolled in Medicare PECOS and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Gerasimos F Karalis Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Gerasimos Karalis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 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.
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 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
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 Gerasimos Karalis's NPI number?
The NPI number for Gerasimos Karalis is 1861076408. It was assigned to this individual provider in the NPPES registry on May 10, 2021.
Where is Gerasimos Karalis located?
Gerasimos Karalis practices at 550 1st Ave, New York, NY 10016. The listed phone number is (212) 263-5506.
What is Gerasimos Karalis's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Gerasimos Karalis enrolled in Medicare?
Yes. Gerasimos Karalis is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Gerasimos Karalis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gerasimos Karalis reassigns Medicare benefits to North Shore - Lij Medical PC (New Hyde Park, NY). The 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 Gerasimos Karalis'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 Gerasimos Karalis was last updated on June 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Gerasimos F Karalis, MD · NPI 1861076408
Student in an Organized Health Care Education/Training Program provider in New York, New York. Individual provider, active in the CMS NPPES registry since May 10, 2021.
## Identity
- **NPI:** 1861076408 (Entity type: Individual)
- **Enumerated:** May 10, 2021
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 550 1ST AVE, New York, NY 10016-6402
- **Phone:** (212) 263-5506
## 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:** North Shore - Lij Medical PC (NPI 1790043479, New Hyde Park, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** June 2, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1861076408) · Data from the CMS NPPES public registry.