DR. KAREN GREENBERG DO
NPI 1912041575
Emergency Medicine in Chester, PA
About Dr. Karen Greenberg Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KAREN GREENBERG DO (NPI 1912041575) is an individual emergency medicine provider in Chester, Pennsylvania, licensed in New Jersey (25MB08173700) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS and maintains a secondary practice location in Marlton.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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 Greenberg Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
8Medicare enrollment records show Karen Greenberg reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chester, PA 19013
- Reassigned Medicare billing, Pennsylvania enrollment
- 654 clinicians in this Medicare group
Philadelphia, PA 19124
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Aria Health Physician Services
- 490 clinicians in this Medicare group
Voorhees, NJ 08043
- Reassigned Medicare billing, New Jersey enrollment
- 332 clinicians in this Medicare group
Mount Holly, NJ 08060
- Reassigned Medicare billing, New Jersey enrollment
- 248 clinicians in this Medicare group
Langhorne, PA 19047
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Emergency Care Services Of Pennsylvania PC
- 329 clinicians in this Medicare group
Fayetteville, NC 28304
- Reassigned Medicare billing, North Carolina enrollment
- 83 clinicians in this Medicare group
Birmingham, AL 35205
- Reassigned Medicare billing, Florida enrollment
- 802 clinicians in this Medicare group
Winter Haven, FL 33881
- Reassigned Medicare billing, Florida enrollment
- 1,065 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 3
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 19013 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
CHESTER, PA 19013
CHESTER, PA 19013
CHESTER, PA 19013
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 Greenberg's NPI number?
The NPI number for Karen Greenberg is 1912041575. It was assigned to this individual provider in the NPPES registry on February 16, 2007.
Where is Karen Greenberg located?
Karen Greenberg practices at 1 Medical Center Blvd, Chester, PA 19013. The listed phone number is (610) 447-2000.
What is Karen Greenberg's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Karen Greenberg enrolled in Medicare?
Yes. Karen Greenberg is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Karen Greenberg's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Greenberg reassigns Medicare benefits to 8 organizations: Prospect Health Access Network, Inc. (Chester, PA), Aria Health Physician Services - Juniata (Philadelphia, PA), Emergency Physician Associates Of South Jersey P C (Voorhees, NJ), Emergency Physician Services Of New Jersey,professional Association (Mount Holly, NJ), Emergency Care Services Of Pennsylvania, P.C. (Langhorne, PA) and 3 more organizations, listed in the Medicare section above. 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 Karen Greenberg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Greenberg accept?
Health plans from Cigna Healthcare list Karen Greenberg 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 Greenberg was last updated on March 23, 2023. 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.
# Dr. Karen Greenberg, DO · NPI 1912041575
Emergency Medicine physician in Chester, Pennsylvania. Individual provider, active in the CMS NPPES registry since February 16, 2007.
## Identity
- **NPI:** 1912041575 (Entity type: Individual)
- **Enumerated:** February 16, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 25MB08173700 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 MEDICAL CENTER BLVD, Chester, PA 19013-3902
- **Phone:** (610) 447-2000
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Prospect Health Access Network, Inc. (NPI 1154776797, Chester, PA); Aria Health Physician Services - Juniata (NPI 1508991589, Philadelphia, PA); Emergency Physician Associates Of South Jersey P C (NPI 1215965231, Voorhees, NJ); Emergency Physician Services Of New Jersey,professional Association (NPI 1831539568, Mount Holly, NJ); Emergency Care Services Of Pennsylvania, P.C. (NPI 1114955010, Langhorne, PA); and 3 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 23, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1912041575) · Data from the CMS NPPES public registry.