DR. LILLIANA APONTE-YAP MD
NPI 1851552541
Psychiatry & Neurology - Child & Adolescent Psychiatry in Hempstead, NY
About Dr. Lilliana Aponte-yap Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LILLIANA APONTE-YAP MD (NPI 1851552541) is an individual child & adolescent psychiatry provider in Hempstead, New York, licensed in New York (248447-1) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS, is affiliated with Samaritan Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Lilliana Aponte-yap Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Lilliana Aponte-yap reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10002
- Reassigned Medicare billing, New York enrollment
- 346 clinicians in this Medicare group
Watertown, NY 13601
- Reassigned Medicare billing, New York enrollment
- 183 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Samaritan Medical Center
Acute Care Hospitals · Watertown, NYOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Lilliana Aponte-yap's NPI number?
The NPI number for Lilliana Aponte-yap is 1851552541. It was assigned to this individual provider in the NPPES registry on June 24, 2008. The provider is also known as Dr. Lilliana Aponte MD.
Where is Lilliana Aponte-yap located?
Lilliana Aponte-yap practices at 344 Fulton Ave, Hempstead, NY 11550. The listed phone number is (516) 538-2613.
What is Lilliana Aponte-yap's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Lilliana Aponte-yap enrolled in Medicare?
Yes. Lilliana Aponte-yap is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Lilliana Aponte-yap's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lilliana Aponte-yap reassigns Medicare benefits to 2 organizations: Icahn School Of Medicine At Mount Sinai (New York, NY) and Samaritan Medical Center (Watertown, 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 Lilliana Aponte-yap's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Lilliana Aponte-yap affiliated with any hospitals?
According to CMS data, Lilliana Aponte-yap is affiliated with Samaritan Medical Center.
When was this NPI record last updated?
The NPPES record for Lilliana Aponte-yap was last updated on May 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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. Lilliana Aponte-Yap, MD · NPI 1851552541
Child & Adolescent Psychiatry physician in Hempstead, New York. Individual provider, active in the CMS NPPES registry since June 24, 2008.
## Identity
- **NPI:** 1851552541 (Entity type: Individual)
- **Enumerated:** June 24, 2008
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** 248447-1 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 344 FULTON AVE, Hempstead, NY 11550-3923
- **Phone:** (516) 538-2613
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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): Icahn School Of Medicine At Mount Sinai (NPI 1124497912, New York, NY); Samaritan Medical Center (NPI 1093722068, Watertown, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** May 6, 2025
- **Other identifiers:** Other 248447-1 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1851552541) · Data from the CMS NPPES public registry.