JOHN KORETH MBBS DPHIL
NPI 1396706503
Internal Medicine - Hematology in Boston, MA
About John Koreth Mbbs Dphil NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN KORETH MBBS DPHIL (NPI 1396706503) is an individual hematology provider in Boston, Massachusetts, licensed in Massachusetts (208706) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Other (1993).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 8
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John Koreth Mbbs Dphil 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.
Areas of Expertise CMS Part B claims 6
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Brigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02215 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 02215
BOSTON, MA 02215
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 John Koreth's NPI number?
The NPI number for John Koreth is 1396706503. It was assigned to this individual provider in the NPPES registry on March 29, 2006.
Where is John Koreth located?
John Koreth practices at 450 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 632-2949.
What is John Koreth's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology, with taxonomy code 207RH0000X.
Is John Koreth enrolled in Medicare?
Yes. John Koreth 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.
What insurance does John Koreth accept?
Health plans from Anthem Blue Cross and Blue Shield list John Koreth 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 John Koreth affiliated with any hospitals?
According to CMS data, John Koreth is affiliated with Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for John Koreth was last updated on May 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
