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Hematology/Oncology

Jaykumar R. Thumar, MD

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

Summary

Jaykumar R. Thumar, MD (Hematology/Oncology) is listed by Medicare at 4 hospitals in Hartford, CT, New Britain, CT and Norwich, CT and other places. NPI 1629259932. 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 Jaykumar R. Thumar, 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
YesOffers telehealth
24Years since medical school (graduated 2002)
MaleGender (as listed)
Hartford HospitalGroup practice (+1 more)

Quick answers

Which hospitals does Jaykumar R. Thumar work at?
Medicare's official clinician data lists Jaykumar R. Thumar at 4 hospitals: Hartford Hospital, The Hospital of Central Connecticut, William W Backus Hospital and Windham Community Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Jaykumar R. Thumar see patients?
Medicare's clinician data lists 23 practice locations, including Hartford, CT. Call before your visit to confirm the address.
What is Jaykumar R. Thumar's specialty?
Medicare lists Hematology/Oncology as the primary specialty.
Does Jaykumar R. Thumar accept Medicare assignment?
Yes. Medicare's clinician data says Jaykumar R. Thumar 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.
Does Jaykumar R. Thumar offer telehealth?
Medicare's clinician data says Jaykumar R. Thumar offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Jaykumar R. Thumar?
(860) 549-7970, as listed in official Medicare / NPI Registry data.
What is Jaykumar R. Thumar's NPI number?
1629259932. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Jaykumar R. Thumar works

Medicare's Facility Affiliation Data lists Jaykumar R. Thumar 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 Jaykumar R. Thumar is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 23; the Medicare profile lists all.

Group practices

Medicare enrollment lists Jaykumar R. Thumar as a member of these groups (CMS data updated 2026-10-02).

  • Hartford Hospital1,044 clinicians in the group
  • The William W Backus Hospital249 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Connecticut →

Other hematologist-oncologists in Hartford

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

All hematologist-oncologists in Hartford →

Clinician information

CredentialMD
Graduation year2002
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1629259932
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