MS. ELIZABETH G. SEIM RN, CPNP
NPI 1891005054
Nurse Practitioner - Pediatrics in New Hyde Park, NY
About Ms. Elizabeth G. Seim Rn, Cpnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. ELIZABETH G. SEIM RN, CPNP (NPI 1891005054) is an individual pediatrics provider in New Hyde Park, New York, licensed in New York (38382137) and active in the NPI registry since October 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ms. Elizabeth G. Seim Rn, Cpnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Elizabeth Seim reassigns Medicare billing to 2 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
Woodbury, NY 11797
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Huntington Hospital Association
- 116 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 11040 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.
NEW HYDE PARK, NY 11040
NEW HYDE PARK, NY 11040
NEW HYDE PARK, NY 11040
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 Elizabeth Seim's NPI number?
The NPI number for Elizabeth Seim is 1891005054. It was assigned to this individual provider in the NPPES registry on October 20, 2010.
Where is Elizabeth Seim located?
Elizabeth Seim practices at 26901 76th Ave Department Of Critical Care, New Hyde Park, NY 11040. The listed phone number is (718) 470-3330.
What is Elizabeth Seim's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Elizabeth Seim enrolled in Medicare?
Yes. Elizabeth Seim is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Elizabeth Seim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Seim reassigns Medicare benefits to 2 organizations: North Shore - Lij Medical PC (New Hyde Park, NY) and Huntington Hosptial Association (Woodbury, 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 Elizabeth Seim'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 Elizabeth Seim was last updated on October 20, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Ms. Elizabeth G. Seim, RN, CPNP · NPI 1891005054
Pediatrics physician in New Hyde Park, New York. Individual provider, active in the CMS NPPES registry since October 20, 2010.
## Identity
- **NPI:** 1891005054 (Entity type: Individual)
- **Enumerated:** October 20, 2010
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** 38382137 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 26901 76TH AVE, DEPARTMENT OF CRITICAL CARE, New Hyde Park, NY 11040-1433
- **Phone:** (718) 470-3330
## 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 1790043479, New Hyde Park, NY); Huntington Hosptial Association (NPI 1902100209, Woodbury, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 20, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1891005054) · Data from the CMS NPPES public registry.