Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Nephrology

Jeongwon Choi, MD

Works at hospitals in Mountain View, CA · San Jose, CA · California

Summary

Dr. Jeongwon Choi, MD is a nephrologist at 200 Jose Figueres Ave, Suite 255, San Jose, CA 95116. Phone: (408) 223-7474. Accepts Medicare assignment. In 2024, Jeongwon Choi had 341 Original Medicare patients and 1,750 services. NPI 1902213820. 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 Jeongwon Choi, 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 Jeongwon Choi accept Medicare assignment?
Yes. Medicare's clinician data says Jeongwon Choi 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 Jeongwon Choi see?
In 2024, CMS data shows 341 Original Medicare patients and 1,750 services for Jeongwon Choi. This counts Original Medicare only and measures volume, not quality.
What is Jeongwon Choi's NPI number?
1902213820. 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 Jeongwon Choi, 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 patients341
Services billed to Medicare1,750
Different services or procedures19
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)696 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)210 services
  3. Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)123 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)116 services
  5. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)107 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%
  • Chronic kidney disease75%
  • Diabetes73%
  • Heart failure62%
  • Ischemic heart disease56%

Hospitals where Jeongwon Choi works

Medicare's Facility Affiliation Data lists Jeongwon Choi 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.

  • El Camino HealthMountain View, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050308
  • Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050380
  • Santa Clara Valley Medical CenterSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050038

Practice locations

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

Group practices

Medicare enrollment lists Jeongwon Choi as a member of this group (CMS data updated October 2, 2026).

  • Valley Medical Consultants Inc5 clinicians in the group

Specialties

Find other Nephrology doctors in California →

Other nephrologists in San Jose

Clinicians with the same Medicare primary specialty in San Jose, CA — not a recommendation.

All nephrologists in San Jose →

Other clinicians in Valley Medical Consultants Inc

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

Clinician information

CredentialMD
Graduation year2009 (17 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1902213820
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