Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Hematology/Oncology

Peter D. Byeff, MD

Works at hospitals in Hartford, CT · New Britain, CT · Connecticut

Summary

Peter D. Byeff, MD (Hematology/Oncology) is listed by Medicare at 2 hospitals in Hartford, CT and New Britain, CT. NPI 1710979463. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Peter D. Byeff, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Hematology/OncologyPrimary specialty
YesAccepts Medicare assignment
52Years since medical school (graduated 1974)
Johns Hopkins University School Of MedicineMedical school
MaleGender (as listed)
The Hospital of Central Connecticut at New Britain General and BradleyGroup practice

Quick answers

Which hospitals does Peter D. Byeff work at?
Medicare's official clinician data lists Peter D. Byeff at 2 hospitals: Hartford Hospital and The Hospital of Central Connecticut. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Peter D. Byeff see patients?
Medicare's clinician data lists 4 practice locations, including New Britain, CT and Southington, CT. Call before your visit to confirm the address.
What is Peter D. Byeff's specialty?
Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
Does Peter D. Byeff accept Medicare assignment?
Yes. Medicare's clinician data says Peter D. Byeff accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Peter D. Byeff?
(860) 827-4180, as listed in official Medicare / NPI Registry data.
What is Peter D. Byeff's NPI number?
1710979463. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Peter D. Byeff works

Medicare's Facility Affiliation Data lists Peter D. Byeff at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Peter D. Byeff is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Peter D. Byeff as a member of this group (CMS data updated 2026-10-02).

  • The Hospital of Central Connecticut at New Britain General and Bradley399 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Connecticut →

Other hematologist-oncologists in New Britain

Clinicians with the same Medicare primary specialty in New Britain, CT — not a recommendation.

All hematologist-oncologists in New Britain →

Clinician information

CredentialMD
Medical schoolJohns Hopkins University School Of Medicine
Graduation year1974
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1710979463
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians