DR. ROY KWAK M.D.
NPI 1306039425
Radiology - Diagnostic Radiology in New York, NY
About Dr. Roy Kwak M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROY KWAK M.D. (NPI 1306039425) is an individual diagnostic radiology provider in New York, New York, licensed in California (A87176) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS, is affiliated with Bryn Mawr Hospital, and is a graduate of University Of California, San Francisco School Of Medicine (2002).
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 and accepts Medicare assignment
Dr. Roy Kwak 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
2Medicare enrollment records show Roy Kwak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Paoli, PA 19301
- Reassigned Medicare billing, California enrollment
- 5 clinicians in this Medicare group
Windber, PA 15963
- Reassigned Medicare billing, California enrollment
- 9 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Bryn Mawr Hospital
Acute Care Hospitals · Bryn Mawr, PAPaoli Hospital
Acute Care Hospitals · Paoli, PAMain Line Hospital Lankenau
Acute Care Hospitals · Wynnewood, PARiddle Memorial Hospital
Acute Care Hospitals · Media, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10010 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 YORK, NY 10010
NEW YORK, NY 10010
NEW YORK, NY 10010
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 Roy Kwak's NPI number?
The NPI number for Roy Kwak is 1306039425. It was assigned to this individual provider in the NPPES registry on August 22, 2007.
Where is Roy Kwak located?
Roy Kwak practices at 423 E 23rd St Room 6564, New York, NY 10010. The listed phone number is (212) 636-7500.
What is Roy Kwak's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Roy Kwak enrolled in Medicare?
Yes. Roy Kwak 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 Roy Kwak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Roy Kwak reassigns Medicare benefits to 2 organizations: Radiology Associates Of The Main Line P C (Paoli, PA) and Pennsylvania Radiology Associates PC (Windber, PA). 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 Roy Kwak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Roy Kwak affiliated with any hospitals?
According to CMS data, Roy Kwak is affiliated with Bryn Mawr Hospital, Paoli Hospital, Main Line Hospital Lankenau and Riddle Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Roy Kwak was last updated on April 2, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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. Roy Kwak, M.D. · NPI 1306039425
Diagnostic Radiology physician in New York, New York. Individual provider, active in the CMS NPPES registry since August 22, 2007.
## Identity
- **NPI:** 1306039425 (Entity type: Individual)
- **Enumerated:** August 22, 2007
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** A87176 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 423 E 23RD ST, ROOM 6564, New York, NY 10010-5011
- **Phone:** (212) 636-7500
## 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): Radiology Associates Of The Main Line P C (NPI 1750332003, Paoli, PA); Pennsylvania Radiology Associates PC (NPI 1184443921, Windber, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 2002
## Record status
- **NPPES last updated:** April 2, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1306039425) · Data from the CMS NPPES public registry.