TAMMY SON
NPI 1659533156
Nurse Practitioner - Acute Care in New York, NY
About Tammy Son NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAMMY SON (NPI 1659533156) is an individual acute care provider in New York, New York, licensed in New York (200600586528) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Tammy Son is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Tammy Son reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10065
- Reassigned Medicare billing, New York enrollment
- 428 clinicians in this Medicare group
New York, NY 10065
- Reassigned Medicare billing, New York enrollment
- 315 clinicians in this Medicare group
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 191 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 3
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 10065 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 10065
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 Tammy Son's NPI number?
The NPI number for Tammy Son is 1659533156. It was assigned to this individual provider in the NPPES registry on June 26, 2008.
Where is Tammy Son located?
Tammy Son practices at 1275 York Ave, New York, NY 10065. The listed phone number is (212) 639-8715.
What is Tammy Son's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Tammy Son enrolled in Medicare?
Yes. Tammy Son is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Tammy Son's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Son reassigns Medicare benefits to 3 organizations: Memorial Hematology Lymphoma Group (New York, NY), Memorial Medical Consultation Group (New York, NY) and Memorial Neurology Group (New York, 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 Tammy Son'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 Tammy Son was last updated on June 26, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Tammy Son · NPI 1659533156
Acute Care physician in New York, New York. Individual provider, active in the CMS NPPES registry since June 26, 2008.
## Identity
- **NPI:** 1659533156 (Entity type: Individual)
- **Enumerated:** June 26, 2008
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 200600586528 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1275 YORK AVE, New York, NY 10065-6007
- **Phone:** (212) 639-8715
## 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): Memorial Hematology Lymphoma Group (NPI 1891766366, New York, NY); Memorial Medical Consultation Group (NPI 1053382523, New York, NY); Memorial Neurology Group (NPI 1538130190, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 26, 2008
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Source: [NPI Profile](https://npiprofile.com/npi/1659533156) · Data from the CMS NPPES public registry.