DR. DIANA CAMILLE CORNELL MD
NPI 1497135644
Internal Medicine in Boston, MA
About Dr. Diana Camille Cornell Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DIANA CAMILLE CORNELL MD (NPI 1497135644) is an individual internal medicine provider in Boston, Massachusetts, licensed in Connecticut (59342) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and maintains a secondary practice location in New Haven.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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. Diana Camille Cornell 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 Diana Cornell reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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 9
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
North Shore Medical Center -
Acute Care Hospitals · Salem, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MAMassachusetts Eye And Ear Infirmary -
Acute Care Hospitals · Boston, MANewton-Wellesley Hospital
Acute Care Hospitals · Newton, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Diana Cornell's NPI number?
The NPI number for Diana Cornell is 1497135644. It was assigned to this individual provider in the NPPES registry on June 3, 2015.
Where is Diana Cornell located?
Diana Cornell practices at 165 Cambridge St, Boston, MA 02114. The listed phone number is (617) 726-4900.
What is Diana Cornell's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Diana Cornell enrolled in Medicare?
Yes. Diana Cornell 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 Diana Cornell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Cornell reassigns Medicare benefits to 2 organizations: The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, 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 Diana Cornell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Diana Cornell affiliated with any hospitals?
According to CMS data, Diana Cornell is affiliated with North Shore Medical Center -, Massachusetts General Hospital, Massachusetts Eye And Ear Infirmary -, Newton-Wellesley Hospital and Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Diana Cornell was last updated on September 27, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Diana Camille Cornell, MD · NPI 1497135644
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 3, 2015.
## Identity
- **NPI:** 1497135644 (Entity type: Individual)
- **Enumerated:** June 3, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 59342 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 165 CAMBRIDGE ST, Boston, MA 02114-2783
- **Phone:** (617) 726-4900
## 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): The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Perelman School Of Med At The University Of Pennsylvania, class of 2015
## Record status
- **NPPES last updated:** September 27, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1497135644) · Data from the CMS NPPES public registry.