DR. KAREN CHAHAL MD
NPI 1477083749
Internal Medicine in Cambridge, MA
About Dr. Karen Chahal Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KAREN CHAHAL MD (NPI 1477083749) is an individual internal medicine provider in Cambridge, Massachusetts, licensed in Massachusetts (271862) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Hospital - Needham, and is a graduate of University Of Toledo College Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Karen Chahal 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
2Medicare enrollment records show Karen Chahal reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 2,579 clinicians in this Medicare group
Roslindale, MA 02131
- Reassigned Medicare billing, Massachusetts enrollment
- 26 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 10
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beth Israel Deaconess Hospital - Needham
Acute Care Hospitals · Needham, MABeth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02138 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.
CAMBRIDGE, MA 02138
CAMBRIDGE, MA 02138
CAMBRIDGE, MA 02138
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 Chahal's NPI number?
The NPI number for Karen Chahal is 1477083749. It was assigned to this individual provider in the NPPES registry on June 19, 2017.
Where is Karen Chahal located?
Karen Chahal practices at 330 Mount Auburn St, Cambridge, MA 02138. The listed phone number is (617) 492-3500.
What is Karen Chahal's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Karen Chahal enrolled in Medicare?
Yes. Karen Chahal 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 Karen Chahal's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Chahal reassigns Medicare benefits to 2 organizations: Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA) and Hebrew Seniorlife Affiliated Medical Group Inc (Roslindale, MA). 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 Chahal's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Chahal accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Karen Chahal 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.
Is Karen Chahal affiliated with any hospitals?
According to CMS data, Karen Chahal is affiliated with Beth Israel Deaconess Hospital - Needham and Beth Israel Deaconess Medical Center.
When was this NPI record last updated?
The NPPES record for Karen Chahal was last updated on June 19, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 Chahal, MD · NPI 1477083749
Internal Medicine physician in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since June 19, 2017.
## Identity
- **NPI:** 1477083749 (Entity type: Individual)
- **Enumerated:** June 19, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 271862 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 330 MOUNT AUBURN ST, Cambridge, MA 02138-5502
- **Phone:** (617) 492-3500
## 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): Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1194765438, Boston, MA); Hebrew Seniorlife Affiliated Medical Group Inc (NPI 1477069391, Roslindale, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Toledo College Of Medicine, class of 2017
## Record status
- **NPPES last updated:** June 19, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1477083749) · Data from the CMS NPPES public registry.