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Internal Medicine

Zhimin Zhai, MD

Works at hospitals in Pullman, WA · Renton, WA · Seattle, WA · Washington

Summary

Dr. Zhimin Zhai, MD is an internal medicine doctor at 11695 NE 4th St, Bellevue, WA 98004. Phone: (425) 637-1855. Accepts Medicare assignment. In 2024, Zhimin Zhai had 389 Original Medicare patients and 1,304 services. NPI 1255416368. 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 Zhimin Zhai, 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 Zhimin Zhai accept Medicare assignment?
Yes. Medicare's clinician data says Zhimin Zhai 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 Zhimin Zhai see?
In 2024, CMS data shows 389 Original Medicare patients and 1,304 services for Zhimin Zhai. This counts Original Medicare only and measures volume, not quality.
What is Zhimin Zhai's NPI number?
1255416368. 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 Zhimin Zhai, 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 patients389
Services billed to Medicare1,304
Different services or procedures20
Participating Medicare providerYes
Average age of these patients78

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)612 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)253 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)235 services
  4. Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and (G0180)54 services
  5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)39 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%
  • Arthritis40%
  • Diabetes31%
  • Chronic kidney disease28%
  • Depression24%

Hospitals where Zhimin Zhai works

Medicare's Facility Affiliation Data lists Zhimin Zhai 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.

  • Pullman Regional HospitalPullman, WA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 501331
  • Valley Medical CenterRenton, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500088
  • Virginia Mason Medical CenterSeattle, WA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 500005

Practice locations

Addresses where Zhimin Zhai is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Zhimin Zhai as a member of these groups (CMS data updated October 2, 2026).

  • Virginia Mason Medical Center867 clinicians in the group
  • Public Hospital District 1-A of Whitman County87 clinicians in the group

Specialties

Find other Internal Medicine doctors in Washington →

Other internal medicine doctors in Bellevue

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

All internal medicine doctors in Bellevue →

Other clinicians in Virginia Mason Medical Center

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

Clinician information

CredentialMD
Graduation year1987 (39 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1255416368
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