CLARA SEIHYUN KOO MD
NPI 1831726249
Radiology - Diagnostic Radiology in Cedar Knolls, NJ
About Clara Seihyun Koo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CLARA SEIHYUN KOO MD (NPI 1831726249) is an individual diagnostic radiology provider in Cedar Knolls, New Jersey, licensed in New Jersey (25MA12531400) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Icahn School Of Medicine At Mount Sinai (2020).
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 and accepts Medicare assignment
Clara Seihyun Koo 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
5Medicare enrollment records show Clara Koo reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cedar Knolls, NJ 07927
- Reassigned Medicare billing, New Jersey and New York enrollments
- 178 clinicians in this Medicare group
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 302 clinicians in this Medicare group
Newark, DE 19713
- Reassigned Medicare billing, New Jersey and New York enrollments
- 10 clinicians in this Medicare group
Silver Spring, MD 20904
- Reassigned Medicare billing, New York enrollment
- 4 clinicians in this Medicare group
Prince Frederick, MD 20678
- Reassigned Medicare billing, New York 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07927 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Clara Koo's NPI number?
The NPI number for Clara Koo is 1831726249. It was assigned to this individual provider in the NPPES registry on March 25, 2020.
Where is Clara Koo located?
Clara Koo practices at 197 Ridgedale Ave Ste 120, Cedar Knolls, NJ 07927. The listed phone number is (973) 695-1290.
What is Clara Koo's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Clara Koo enrolled in Medicare?
Yes. Clara Koo 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 Clara Koo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Clara Koo reassigns Medicare benefits to 5 organizations: The New Jersey Imaging Network, LLC (Cedar Knolls, NJ), Lenox Hill Radiology & Medical Imaging Associates, PC (New York, NY), Delaware Radiology Associates PA (Newark, DE), Community Radiology Associates Inc (Silver Spring, MD) and Maryland Imaging Network PC (Prince Frederick, MD). 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 Clara Koo'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 Clara Koo was last updated on April 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Clara Seihyun Koo, MD · NPI 1831726249
Diagnostic Radiology physician in Cedar Knolls, New Jersey. Individual provider, active in the CMS NPPES registry since March 25, 2020.
## Identity
- **NPI:** 1831726249 (Entity type: Individual)
- **Enumerated:** March 25, 2020
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 25MA12531400 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 197 RIDGEDALE AVE STE 120, Cedar Knolls, NJ 07927-2107
- **Phone:** (973) 695-1290 · **Fax:** (973) 695-1295
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): The New Jersey Imaging Network, LLC (NPI 1629327887, Cedar Knolls, NJ); Lenox Hill Radiology & Medical Imaging Associates, PC (NPI 1821036807, New York, NY); Delaware Radiology Associates PA (NPI 1740706175, Newark, DE); Community Radiology Associates Inc (NPI 1396707782, Silver Spring, MD); Maryland Imaging Network PC (NPI 1487296471, Prince Frederick, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 2020
## Record status
- **NPPES last updated:** April 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1831726249) · Data from the CMS NPPES public registry.