DR. GARY KA-LAI WONG M.D.
NPI 1144634221
Hospitalist in Oceanside, NY
About Dr. Gary Ka-lai Wong M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GARY KA-LAI WONG M.D. (NPI 1144634221) is an individual hospitalist provider in Oceanside, New York, licensed in New York (285828) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai South Nassau, and maintains a secondary practice location in Brooklyn.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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. Gary Ka-lai Wong M.d. 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
3Medicare enrollment records show Gary Wong reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oceanside, NY 11572
- Reassigned Medicare billing, New York enrollment
- 302 clinicians in this Medicare group
Lindenhurst, NY 11757
- Reassigned Medicare billing, New York enrollment
- 348 clinicians in this Medicare group
Brooklyn, NY 11234
- Reassigned Medicare billing, New York enrollment
- 101 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 8
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai South Nassau
Acute Care Hospitals · Oceanside, NYGood Samaritan Hospital Medical Center
Acute Care Hospitals · West Islip, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11572 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.
OCEANSIDE, NY 11572
OCEANSIDE, NY 11572
OCEANSIDE, NY 11572
OCEANSIDE, NY 11572
OCEANSIDE, NY 11572
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 Gary Wong's NPI number?
The NPI number for Gary Wong is 1144634221. It was assigned to this individual provider in the NPPES registry on June 17, 2014.
Where is Gary Wong located?
Gary Wong practices at One Healthy Way, Oceanside, NY 11572. The listed phone number is (516) 632-3000.
What is Gary Wong's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Gary Wong enrolled in Medicare?
Yes. Gary Wong 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 Gary Wong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gary Wong reassigns Medicare benefits to 3 organizations: Mount Sinai School Of Medicine (Oceanside, NY), Southwest Suffolk Medical PC (Lindenhurst, NY) and Icahn School Of Medicine At Mount Sinai (Brooklyn, 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 Gary Wong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gary Wong affiliated with any hospitals?
According to CMS data, Gary Wong is affiliated with Mount Sinai South Nassau and Good Samaritan Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for Gary Wong was last updated on January 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Gary Ka-Lai Wong, M.D. · NPI 1144634221
Hospitalist physician in Oceanside, New York. Individual provider, active in the CMS NPPES registry since June 17, 2014.
## Identity
- **NPI:** 1144634221 (Entity type: Individual)
- **Enumerated:** June 17, 2014
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 285828 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** ONE HEALTHY WAY, Oceanside, NY 11572
- **Phone:** (516) 632-3000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Mount Sinai School Of Medicine (NPI 1326515578, Oceanside, NY); Southwest Suffolk Medical PC (NPI 1770919763, Lindenhurst, NY); Icahn School Of Medicine At Mount Sinai (NPI 1780111484, Brooklyn, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York Downstate Medical Center, class of 2014
## Record status
- **NPPES last updated:** January 14, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1144634221) · Data from the CMS NPPES public registry.