JOHN HARRY LAGONIKOS M.D.
NPI 1598052557
Hospitalist in Trenton, NJ
About John Harry Lagonikos M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN HARRY LAGONIKOS M.D. (NPI 1598052557) is an individual hospitalist provider in Trenton, New Jersey, licensed in New York (267142) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Harry Lagonikos M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show John Lagonikos reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
Slingerlands, NY 12159
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: St Peters Hospital Of The City Of Albany
- 623 clinicians in this Medicare group
Troy, NY 12180
- Reassigned Medicare billing, New York enrollment
- 725 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 08629 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TRENTON, NJ 08629
TRENTON, NJ 08629
TRENTON, NJ 08629
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 Lagonikos's NPI number?
The NPI number for John Lagonikos is 1598052557. It was assigned to this individual provider in the NPPES registry on June 28, 2011.
Where is John Lagonikos located?
John Lagonikos practices at 601 Hamilton Ave, Trenton, NJ 08629. The listed phone number is (609) 599-5061.
What is John Lagonikos's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is John Lagonikos enrolled in Medicare?
Yes. John Lagonikos is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Lagonikos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Lagonikos reassigns Medicare benefits to 3 organizations: North Shore - Lij Medical PC (New Hyde Park, NY), St. Peter's Hospital Of The City Of Albany (Slingerlands, NY) and Samaritan Hospital Of Troy, New York (Troy, NY). 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 Lagonikos'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 Lagonikos was last updated on July 27, 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.
# John Harry Lagonikos, M.D. · NPI 1598052557
Hospitalist physician in Trenton, New Jersey. Individual provider, active in the CMS NPPES registry since June 28, 2011.
## Identity
- **NPI:** 1598052557 (Entity type: Individual)
- **Enumerated:** June 28, 2011
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 267142 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 601 HAMILTON AVE, Trenton, NJ 08629-1915
- **Phone:** (609) 599-5061
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): North Shore - Lij Medical PC (NPI 1790043479, New Hyde Park, NY); St. Peter's Hospital Of The City Of Albany (NPI 1073686069, Slingerlands, NY); Samaritan Hospital Of Troy, New York (NPI 1043267727, Troy, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1598052557) · Data from the CMS NPPES public registry.