CALVIN HWANG M.D.
NPI 1861554495
Internal Medicine - Critical Care Medicine in Flushing, NY
About Calvin Hwang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CALVIN HWANG M.D. (NPI 1861554495) is an individual critical care medicine provider in Flushing, New York, licensed in New York (236985) and active in the NPI registry since December 2006. He 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)
Calvin Hwang M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Calvin Hwang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Flushing, NY 11355
- Reassigned Medicare billing, New York enrollment
- 645 clinicians in this Medicare group
New York, NY 10032
- Reassigned Medicare billing, New York enrollment
- 3,922 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 11355 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 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FLUSHING, NY 11355
FLUSHING, NY 11355
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 Calvin Hwang's NPI number?
The NPI number for Calvin Hwang is 1861554495. It was assigned to this individual provider in the NPPES registry on December 13, 2006.
Where is Calvin Hwang located?
Calvin Hwang practices at 5645 Main St Dept Of, Flushing, NY 11355. The listed phone number is (718) 912-0632.
What is Calvin Hwang's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Calvin Hwang enrolled in Medicare?
Yes. Calvin Hwang is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Calvin Hwang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Calvin Hwang reassigns Medicare benefits to 2 organizations: New York Queens Medicine And Surgery, P.C. (Flushing, NY) and Trustees Of Columbia University In The City Of New York (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 Calvin Hwang'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 Calvin Hwang was last updated on December 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Calvin Hwang, M.D. · NPI 1861554495
Critical Care Medicine physician in Flushing, New York. Individual provider, active in the CMS NPPES registry since December 13, 2006.
## Identity
- **NPI:** 1861554495 (Entity type: Individual)
- **Enumerated:** December 13, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 236985 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 5645 MAIN ST DEPT OF, Flushing, NY 11355-5045
- **Phone:** (718) 912-0632
## 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): New York Queens Medicine And Surgery, P.C. (NPI 1740792233, Flushing, NY); Trustees Of Columbia University In The City Of New York (NPI 1477068971, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 5, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1861554495) · Data from the CMS NPPES public registry.