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Hematology/Oncology

Wylie D. Hosmer, MD

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

Summary

Dr. Wylie D. Hosmer, MD is a hematologist-oncologist at 100 Grand St, New Britain, CT 06052. Phone: (860) 827-4180. Accepts Medicare assignment. In 2024, Wylie D. Hosmer had 331 Original Medicare patients and 1,282 services. NPI 1720136757. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Hematologist-oncologist (Medicare lists Hematology/Oncology)
  • Address: 100 Grand St, New Britain, CT 06052 · Directions (3 more locations)
  • Phone: (860) 827‑4180
  • Medicare: Accepts Medicare assignment
  • Hospitals: Hartford Hospital, The Hospital of Central Connecticut
  • Group practice: The Hospital of Central Connecticut at New Britain General and Bradley
  • Medical school: Columbia University College Of Physicians And Surgeons · graduated 2004 (22 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Wylie D. Hosmer, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Wylie D. Hosmer accept Medicare assignment?
Yes. Medicare's clinician data says Wylie D. Hosmer accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Wylie D. Hosmer see?
In 2024, CMS data shows 331 Original Medicare patients and 1,282 services for Wylie D. Hosmer. This counts Original Medicare only and measures volume, not quality.
What is Wylie D. Hosmer's NPI number?
1720136757. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Wylie D. Hosmer, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients331
Services billed to Medicare1,282
Different services or procedures16
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)619 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)275 services
  3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)165 services
  4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)67 services
  5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)42 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)49%
  • Arthritis41%
  • Anxiety34%
  • Diabetes33%

Hospitals where Wylie D. Hosmer works

Medicare's Facility Affiliation Data lists Wylie D. Hosmer at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Wylie D. Hosmer is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Wylie D. Hosmer as a member of this group (CMS data updated October 2, 2026).

  • 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 →

Other clinicians in The Hospital of Central Connecticut at New Britain General and Bradley

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolColumbia University College Of Physicians And Surgeons
Graduation year2004 (22 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1720136757
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians