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Hematology/Oncology

Clement P. Pillainayagam, MD

Works at hospitals in Parma, OH · Cleveland, OH · Ravenna, OH · Ohio

Summary

Dr. Clement P. Pillainayagam, MD is a hematologist-oncologist at 11100 Euclid Ave, Cleveland, OH 44106. Phone: (216) 844-1000. Accepts Medicare assignment. In 2024, Clement P. Pillainayagam had 40 Original Medicare patients and 61 services. NPI 1588977433. 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 Clement P. Pillainayagam, 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 Clement P. Pillainayagam accept Medicare assignment?
Yes. Medicare's clinician data says Clement P. Pillainayagam 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 Clement P. Pillainayagam see?
In 2024, CMS data shows 40 Original Medicare patients and 61 services for Clement P. Pillainayagam. This counts Original Medicare only and measures volume, not quality.
What is Clement P. Pillainayagam's NPI number?
1588977433. 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 Clement P. Pillainayagam, 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 patients40
Services billed to Medicare61
Different services or procedures14
Participating Medicare providerYes
Average age of these patients68

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)18 services
  2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)18 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 cholesterol65%
  • Stroke or mini-stroke48%
  • Arthritis45%
  • Anxiety43%
  • Depression38%

Hospitals where Clement P. Pillainayagam works

Medicare's Facility Affiliation Data lists Clement P. Pillainayagam 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 Clement P. Pillainayagam is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Clement P. Pillainayagam as a member of this group (CMS data updated October 2, 2026).

  • University Hospitals Medical Group Inc2,294 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Ohio →

Other hematologist-oncologists in Cleveland

Clinicians with the same Medicare primary specialty in Cleveland, OH — not a recommendation.

All hematologist-oncologists in Cleveland →

Other clinicians in University Hospitals Medical Group Inc

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

Clinician information

CredentialMD
Medical schoolMichigan State University College Of Human Medicine
Graduation year2010 (16 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1588977433
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