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Internal Medicine

Valeriia Klymenko, MD

Works at hospitals in Danbury, CT · Derby, CT · Bridgeport, CT · Connecticut

Summary

Dr. Valeriia Klymenko, MD is an internal medicine doctor at 24 Hospital Ave, Danbury, CT 06810. Phone: (203) 739-7118. Accepts Medicare assignment. In 2024, Valeriia Klymenko had 524 Original Medicare patients and 556 services. NPI 1720641293. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Valeriia Klymenko, 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 Valeriia Klymenko accept Medicare assignment?
Yes. Medicare's clinician data says Valeriia Klymenko 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 Valeriia Klymenko see?
In 2024, CMS data shows 524 Original Medicare patients and 556 services for Valeriia Klymenko. This counts Original Medicare only and measures volume, not quality.
What is Valeriia Klymenko's NPI number?
1720641293. 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 Valeriia Klymenko, 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 patients524
Services billed to Medicare556
Different services or procedures11
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)475 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)62 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%
  • Arthritis53%
  • Ischemic heart disease52%
  • Anxiety47%
  • Depression44%

Hospitals where Valeriia Klymenko works

Medicare's Facility Affiliation Data lists Valeriia Klymenko 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.

  • Danbury HospitalDanbury, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070033
  • Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031
  • St Vincent's Medical CenterBridgeport, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070028

Practice locations

Addresses where Valeriia Klymenko is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Valeriia Klymenko as a member of these groups (CMS data updated October 2, 2026).

  • Hartford Healthcare Medical Group Specialists PLLC1,588 clinicians in the group
  • Nuvance Health Medical Practice Ct Inc747 clinicians in the group

Specialties

Find other Internal Medicine doctors in Connecticut →

Other internal medicine doctors in Danbury

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

All internal medicine doctors in Danbury →

Other clinicians in Hartford Healthcare Medical Group Specialists PLLC

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

Clinician information

CredentialMD
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1720641293
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