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Gastroenterology

Viju P. Deenadayalu, MD

Works at hospitals in Portland, OR · Oregon

Summary

Dr. Viju P. Deenadayalu, MD is a gastroenterologist at 1111 NE 99th Ave, Suite 301, Portland, OR 97220. Phone: (503) 963-2707. Accepts Medicare assignment. In 2024, Viju P. Deenadayalu had 195 Original Medicare patients and 2,798 services. NPI 1922270735. 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: Gastroenterologist (Medicare lists Gastroenterology)
  • Address: 1111 NE 99th Ave, Suite 301, Portland, OR 97220 · Directions
  • Phone: (503) 963‑2707
  • Medicare: Accepts Medicare assignment
  • Hospital: Providence Portland Medical Center
  • Group practice: The Oregon Clinic, PC
  • Medical school: Wright State University Boonshoft School Of Medicine · graduated 2002 (24 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 Viju P. Deenadayalu, 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 Viju P. Deenadayalu accept Medicare assignment?
Yes. Medicare's clinician data says Viju P. Deenadayalu 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 Viju P. Deenadayalu see?
In 2024, CMS data shows 195 Original Medicare patients and 2,798 services for Viju P. Deenadayalu. This counts Original Medicare only and measures volume, not quality.
What is Viju P. Deenadayalu's NPI number?
1922270735. 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 Viju P. Deenadayalu, 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 patients195
Services billed to Medicare2,798
Different services or procedures33
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Pathology examination of tissue using a microscope, intermediate complexity (88305)106 services
  2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)62 services
  3. Biopsy of large bowel using a flexible endoscope (45380)51 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)27 services
  5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)22 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 cholesterol63%
  • High blood pressure62%
  • Arthritis39%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)22%
  • Diabetes21%
  • Depression21%

Hospitals where Viju P. Deenadayalu works

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

Group practices

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

  • The Oregon Clinic, PC362 clinicians in the group

Specialties

Find other Gastroenterology doctors in Oregon →

Other gastroenterologists in Portland

Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.

All gastroenterologists in Portland →

Other clinicians in The Oregon Clinic, PC

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

Clinician information

CredentialMD
Medical schoolWright State University Boonshoft School Of Medicine
Graduation year2002 (24 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1922270735
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