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Colorectal Surgery (Proctology)

Greta V. Bernier, MD

Works at hospitals in Renton, WA · Washington

Summary

Dr. Greta V. Bernier, MD is a colorectal surgeon at 4033 Talbot Rd S, Suite 530, Renton, WA 98055. Phone: (425) 228-6076. Accepts Medicare assignment. In 2024, Greta V. Bernier had 104 Original Medicare patients and 182 services. NPI 1588814198. 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: Colorectal surgeon (Medicare lists Colorectal Surgery (Proctology))
  • Address: 4033 Talbot Rd S, Suite 530, Renton, WA 98055 · Directions
  • Phone: (425) 228‑6076
  • Medicare: Accepts Medicare assignment
  • Hospital: Valley Medical Center
  • Group practice: Valley Medical Group-Renton
  • Medical school: University Of Washington School Of Medicine · graduated 2008 (18 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Greta V. Bernier, 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 Greta V. Bernier accept Medicare assignment?
Yes. Medicare's clinician data says Greta V. Bernier 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 Greta V. Bernier see?
In 2024, CMS data shows 104 Original Medicare patients and 182 services for Greta V. Bernier. This counts Original Medicare only and measures volume, not quality.
What is Greta V. Bernier's NPI number?
1588814198. 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 Greta V. Bernier, 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 patients104
Services billed to Medicare182
Different services or procedures33
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)24 services
  2. Diagnostic exam of anus using an endoscope (46600)19 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)18 services
  4. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)14 services
  5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)13 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 cholesterol67%
  • High blood pressure60%
  • Arthritis42%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)27%
  • Diabetes24%
  • Anxiety18%

Hospitals where Greta V. Bernier works

Medicare's Facility Affiliation Data lists Greta V. Bernier 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.

  • Valley Medical CenterRenton, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500088

Practice locations

Addresses where Greta V. Bernier is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Greta V. Bernier as a member of this group (CMS data updated October 2, 2026).

  • Valley Medical Group-Renton411 clinicians in the group

Specialties

Find other Colorectal Surgery (Proctology) doctors in Washington →

Other colorectal surgeons in Washington

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

All colorectal surgeons in Washington →

Other clinicians in Valley Medical Group-Renton

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

Clinician information

CredentialMD
Medical schoolUniversity Of Washington School Of Medicine
Graduation year2008 (18 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1588814198
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