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Dermatology

Matthew S. Bremmer, MD

Works at hospitals in Renton, WA · Washington

Summary

Dr. Matthew S. Bremmer, MD is a dermatologist at 4011 Talbot Rd S, Suite 500, Renton, WA 98055. Phone: (425) 690-3488. Accepts Medicare assignment. In 2024, Matthew S. Bremmer had 621 Original Medicare patients and 2,233 services. NPI 1528228848. 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: Dermatologist (Medicare lists Dermatology)
  • Address: 4011 Talbot Rd S, Suite 500, Renton, WA 98055 · Directions
  • Phone: (425) 690‑3488
  • Medicare: Accepts Medicare assignment
  • Hospital: Valley Medical Center
  • Group practice: Valley Medical Group-Renton
  • Medical school: University Of Maryland School Of Medicine · graduated 2008 (18 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Matthew S. Bremmer, 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 Matthew S. Bremmer accept Medicare assignment?
Yes. Medicare's clinician data says Matthew S. Bremmer 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 Matthew S. Bremmer see?
In 2024, CMS data shows 621 Original Medicare patients and 2,233 services for Matthew S. Bremmer. This counts Original Medicare only and measures volume, not quality.
What is Matthew S. Bremmer's NPI number?
1528228848. 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 Matthew S. Bremmer, 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 patients621
Services billed to Medicare2,233
Different services or procedures56
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Destruction of precancer skin growth, 2-14 growths (17003)809 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)291 services
  3. Destruction of precancer skin growth, 1 growth (17000)215 services
  4. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)160 services
  5. Biopsy of related skin growth, first growth (11102)125 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 cholesterol69%
  • High blood pressure65%
  • Arthritis40%
  • Diabetes20%
  • Chronic kidney disease19%
  • Depression17%

Hospitals where Matthew S. Bremmer works

Medicare's Facility Affiliation Data lists Matthew S. Bremmer 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 Matthew S. Bremmer is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Matthew S. Bremmer as a member of this group (CMS data updated October 2, 2026).

  • Valley Medical Group-Renton411 clinicians in the group

Specialties

Find other Dermatology doctors in Washington →

Other dermatologists in Renton

Clinicians with the same Medicare primary specialty in Renton, WA — not a recommendation.

All dermatologists in Renton →

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 Maryland School Of Medicine
Graduation year2008 (18 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528228848
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