KAREN CHEN OD
NPI 1609794346
Optometrist in Sparta, NJ
About Karen Chen Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN CHEN OD (NPI 1609794346) is an individual optometrist in Sparta, New Jersey, licensed in New Jersey (27OA00744500) and active in the NPI registry since July 2026. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of State University Of New York - State College Optometry (2026).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
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
Karen Chen Od 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 Reassignment
Medicare enrollment records show Karen Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sparta, NJ 07871
- Reassigned Medicare billing, New Jersey enrollment
- Medicare enrollment name: Northwest Optometry Group PA
- 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 07871 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Karen Chen's NPI number?
The NPI number for Karen Chen is 1609794346. It was assigned to this individual provider in the NPPES registry on July 9, 2026.
Where is Karen Chen located?
Karen Chen practices at 117 Sparta Ave, Sparta, NJ 07871. The listed phone number is (973) 729-9199.
What is Karen Chen's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Karen Chen enrolled in Medicare?
Yes. Karen Chen 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 organization bills Medicare for Karen Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Chen reassigns Medicare benefits to Northwest Optometry Group, P.A. (Sparta, NJ). The 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 Karen Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Chen accept?
Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Providence Health Plan list Karen Chen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Karen Chen was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Karen Chen, OD · NPI 1609794346
Optometrist provider in Sparta, New Jersey. Individual provider, active in the CMS NPPES registry since July 9, 2026.
## Identity
- **NPI:** 1609794346 (Entity type: Individual)
- **Enumerated:** July 9, 2026
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 27OA00744500 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 117 SPARTA AVE, Sparta, NJ 07871-1773
- **Phone:** (973) 729-9199
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Northwest Optometry Group, P.A. (NPI 1801853254, Sparta, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York - State College Optometry, class of 2026
## Record status
- **NPPES last updated:** July 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1609794346) · Data from the CMS NPPES public registry.