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Gastroenterology

Tiffany L. Lambrou, MD

Works at hospitals in Portland, OR · Oregon

Summary

Dr. Tiffany L. Lambrou, MD is a gastroenterologist at 1111 NE 99th Ave, Portland, OR 97220. Phone: (503) 239-6673. Accepts Medicare assignment. In 2024, Tiffany L. Lambrou had 174 Original Medicare patients and 4,538 services. NPI 1306209994. 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, Portland, OR 97220 · Directions (3 more locations)
  • Phone: (503) 239‑6673
  • Medicare: Accepts Medicare assignment
  • Hospital: Providence Portland Medical Center
  • Group practice: The Oregon Clinic, PC
  • Medical school: Florida State University College Of Medicine · graduated 2016 (10 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Tiffany L. Lambrou, 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 Tiffany L. Lambrou accept Medicare assignment?
Yes. Medicare's clinician data says Tiffany L. Lambrou 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 Tiffany L. Lambrou see?
In 2024, CMS data shows 174 Original Medicare patients and 4,538 services for Tiffany L. Lambrou. This counts Original Medicare only and measures volume, not quality.
What is Tiffany L. Lambrou's NPI number?
1306209994. 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 Tiffany L. Lambrou, 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 patients174
Services billed to Medicare4,538
Different services or procedures42
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Injection, vedolizumab, intravenous, 1 mg (J3380)3,601 services
  2. Pathology examination of tissue using a microscope, intermediate complexity (88305)54 services
  3. Biopsy of large bowel using a flexible endoscope (45380)37 services
  4. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)22 services
  5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)20 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 pressure66%
  • High cholesterol53%
  • Arthritis41%
  • Depression29%
  • Diabetes26%
  • Anxiety23%

Hospitals where Tiffany L. Lambrou works

Medicare's Facility Affiliation Data lists Tiffany L. Lambrou 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 Tiffany L. Lambrou is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Tiffany L. Lambrou 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 schoolFlorida State University College Of Medicine
Graduation year2016 (10 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1306209994
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