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Neurology

Yih Lin Nien, MD

Works at hospitals in Torrance, CA · California

Summary

Dr. Yih Lin Nien, MD is a neurologist at 4101 Torrance Blvd, Torrance, CA 90503. Phone: (310) 303-7496. Accepts Medicare assignment. In 2024, Yih Lin Nien had 338 Original Medicare patients and 570 services. NPI 1821204314. 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 Yih Lin Nien, 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 Yih Lin Nien accept Medicare assignment?
Yes. Medicare's clinician data says Yih Lin Nien 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 Yih Lin Nien see?
In 2024, CMS data shows 338 Original Medicare patients and 570 services for Yih Lin Nien. This counts Original Medicare only and measures volume, not quality.
What is Yih Lin Nien's NPI number?
1821204314. 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 Yih Lin Nien, 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 patients338
Services billed to Medicare570
Different services or procedures8
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)202 services
  2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)150 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)132 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)59 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%
  • Stroke or mini-stroke71%
  • Diabetes54%
  • Arthritis50%
  • Chronic kidney disease45%

Hospitals where Yih Lin Nien works

Medicare's Facility Affiliation Data lists Yih Lin Nien 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 Yih Lin Nien is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Yih Lin Nien as a member of this group (CMS data updated October 2, 2026).

  • Providence Medical Institute288 clinicians in the group

Specialties

Find other Neurology doctors in California →

Other neurologists in Torrance

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

All neurologists in Torrance →

Other clinicians in Providence Medical Institute

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

Clinician information

CredentialMD
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1821204314
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