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Internal Medicine

Harry A. Pierce Iii, DO

Works at hospitals in Burien, WA · Tacoma, WA · Washington

Summary

Dr. Harry A. Pierce Iii, DO is an internal medicine doctor at 13014 12th Ave SW, Burien, WA 98146. Phone: (206) 244-5805. Accepts Medicare assignment. In 2024, Harry A. Pierce Iii had 102 Original Medicare patients and 612 services. NPI 1801877717. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Harry A. Pierce Iii, 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 Harry A. Pierce Iii accept Medicare assignment?
Yes. Medicare's clinician data says Harry A. Pierce Iii 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 Harry A. Pierce Iii see?
In 2024, CMS data shows 102 Original Medicare patients and 612 services for Harry A. Pierce Iii. This counts Original Medicare only and measures volume, not quality.
What is Harry A. Pierce Iii's NPI number?
1801877717. 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 Harry A. Pierce Iii, 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 patients102
Services billed to Medicare612
Different services or procedures14
Participating Medicare providerYes
Average age of these patients77

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)386 services
  2. Insertion of needle into vein for collection of blood sample (36415)155 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)14 services
  4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)11 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 pressure75%
  • High cholesterol75%
  • Arthritis44%
  • Diabetes32%
  • Atrial fibrillation25%
  • Heart failure19%

Hospitals where Harry A. Pierce Iii works

Medicare's Facility Affiliation Data lists Harry A. Pierce Iii 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.

  • Highline Medical CenterBurien, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500011
  • St Joseph Medical CenterTacoma, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500108

Practice locations

Addresses where Harry A. Pierce Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Internal Medicine doctors in Washington →

Other internal medicine doctors in Burien

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

All internal medicine doctors in Burien →

Clinician information

CredentialDO
Graduation year1973 (53 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1801877717
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