DR. KAREN TAPAWAN CHEN M.D.
NPI 1043476716
Internal Medicine in Lutherville, MD
About Dr. Karen Tapawan Chen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KAREN TAPAWAN CHEN M.D. (NPI 1043476716) is an individual internal medicine provider in Lutherville, Maryland, licensed in Illinois (125053912) and active in the NPI registry since August 2008. She is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Karen Tapawan Chen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
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.
Timonium, MD 21093
- Reassigned Medicare billing, Maryland and District of Columbia enrollments
- Also billed through NPI 1952461816 (District of Columbia)
- 1,253 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 21093 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.
LUTHERVILLE, MD 21093
LUTHERVILLE, MD 21093
LUTHERVILLE, MD 21093
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 1043476716. It was assigned to this individual provider in the NPPES registry on August 1, 2008.
Where is Karen Chen located?
Karen Chen practices at 1447 York Rd, Lutherville, MD 21093. The listed phone number is (410) 339-5500.
What is Karen Chen's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Karen Chen enrolled in Medicare?
Yes. Karen Chen is registered in the Medicare PECOS enrollment system.
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 Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Timonium, MD). 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.
When was this NPI record last updated?
The NPPES record for Karen Chen was last updated on June 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Karen Tapawan Chen, M.D. · NPI 1043476716
Internal Medicine physician in Lutherville, Maryland. Individual provider, active in the CMS NPPES registry since August 1, 2008.
## Identity
- **NPI:** 1043476716 (Entity type: Individual)
- **Enumerated:** August 1, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 125053912 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1447 YORK RD, Lutherville, MD 21093-6017
- **Phone:** (410) 339-5500
## 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:** Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1467114207, Timonium, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 21, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1043476716) · Data from the CMS NPPES public registry.