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Nephrology

Justin L. Bullock, MD

Works at hospitals in Seattle, WA · Washington

Summary

Dr. Justin L. Bullock, MD is a nephrologist at 325 9th Ave, Seattle, WA 98104. Phone: (206) 731-3000. Accepts Medicare assignment. In 2024, Justin L. Bullock had 52 Original Medicare patients and 116 services. NPI 1699235101. 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 Justin L. Bullock, 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 Justin L. Bullock accept Medicare assignment?
Yes. Medicare's clinician data says Justin L. Bullock 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 Justin L. Bullock see?
In 2024, CMS data shows 52 Original Medicare patients and 116 services for Justin L. Bullock. This counts Original Medicare only and measures volume, not quality.
What is Justin L. Bullock's NPI number?
1699235101. 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 Justin L. Bullock, 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 patients52
Services billed to Medicare116
Different services or procedures17
Participating Medicare providerYes
Average age of these patients66

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)23 services
  2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)18 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)16 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%
  • Chronic kidney disease75%
  • High cholesterol54%
  • Diabetes46%
  • Ischemic heart disease38%
  • Heart failure38%

Hospitals where Justin L. Bullock works

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

Group practices

Medicare enrollment lists Justin L. Bullock as a member of this group (CMS data updated October 2, 2026).

  • The Association of University Physicians3,535 clinicians in the group

Specialties

Find other Nephrology doctors in Washington →

Other nephrologists in Seattle

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

All nephrologists in Seattle →

Other clinicians in The Association of University Physicians

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

Clinician information

CredentialMD
Graduation year2019 (7 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1699235101
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