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Hematology/Oncology

Nagendra R. Tirumali, MD

Works at hospitals in Portland, OR · Oregon

Summary

Dr. Nagendra R. Tirumali, MD is a hematologist-oncologist at 1500 Division St, Suite 220, Oregon City, OR 97045. Phone: (503) 513-1900. Accepts Medicare assignment. In 2024, Nagendra R. Tirumali had 105 Original Medicare patients and 196 services. NPI 1669565230. 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: 1500 Division St, Suite 220, Oregon City, OR 97045 · Directions
  • Phone: (503) 513‑1900
  • Medicare: Accepts Medicare assignment
  • Hospital: Providence Portland Medical Center
  • Group practice: Providence Health and Services Oregon
  • Medical school: graduated 1974 (52 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 Nagendra R. Tirumali, 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 Nagendra R. Tirumali accept Medicare assignment?
Yes. Medicare's clinician data says Nagendra R. Tirumali 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 Nagendra R. Tirumali see?
In 2024, CMS data shows 105 Original Medicare patients and 196 services for Nagendra R. Tirumali. This counts Original Medicare only and measures volume, not quality.
What is Nagendra R. Tirumali's NPI number?
1669565230. 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 Nagendra R. Tirumali, 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 patients105
Services billed to Medicare196
Different services or procedures6
Participating Medicare providerYes
Average age of these patients75

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)117 services
  2. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)36 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)36 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 pressure69%
  • High cholesterol68%
  • Arthritis50%
  • Diabetes34%
  • Chronic kidney disease25%
  • Ischemic heart disease24%

Hospitals where Nagendra R. Tirumali works

Medicare's Facility Affiliation Data lists Nagendra R. Tirumali 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 Nagendra R. Tirumali is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Nagendra R. Tirumali as a member of this group (CMS data updated October 2, 2026).

  • Providence Health and Services Oregon1,433 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Oregon →

Other hematologist-oncologists in Oregon

Clinicians with the same Medicare primary specialty in Oregon — not a recommendation.

All hematologist-oncologists in Oregon →

Other clinicians in Providence Health and Services Oregon

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

Clinician information

CredentialMD
Graduation year1974 (52 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1669565230
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