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

Internal Medicine

Wally C. Huynh, MD

Works at hospitals in Hanford, CA · Tulare, CA · Visalia, CA · California

Summary

Dr. Wally C. Huynh, MD is an internal medicine doctor at 400 W Mineral King Ave, Visalia, CA 93291. Phone: (559) 909-0264. Accepts Medicare assignment. In 2024, Wally C. Huynh had 822 Original Medicare patients and 1,120 services. NPI 1184895989. 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 Wally C. Huynh, 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 Wally C. Huynh accept Medicare assignment?
Yes. Medicare's clinician data says Wally C. Huynh 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 Wally C. Huynh see?
In 2024, CMS data shows 822 Original Medicare patients and 1,120 services for Wally C. Huynh. This counts Original Medicare only and measures volume, not quality.
What is Wally C. Huynh's NPI number?
1184895989. 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 Wally C. Huynh, 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 patients822
Services billed to Medicare1,120
Different services or procedures9
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)501 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)291 services
  3. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)99 services
  4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)82 services
  5. Hospital discharge day management, more than 30 minutes (99239)70 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%
  • Arthritis56%
  • Chronic kidney disease55%
  • Diabetes54%
  • Ischemic heart disease54%

Hospitals where Wally C. Huynh works

Medicare's Facility Affiliation Data lists Wally C. Huynh 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.

  • Adventist Health HanfordHanford, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050121
  • Adventist Health TulareTulare, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050784
  • Kaweah Health Medical CenterVisalia, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050057

Practice locations

Addresses where Wally C. Huynh is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Wally C. Huynh as a member of this group (CMS data updated October 2, 2026).

  • Valley Hospitalist Medical Group, Inc35 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Visalia

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

All internal medicine doctors in Visalia →

Other clinicians in Valley Hospitalist Medical Group, Inc

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

Clinician information

CredentialMD
Graduation year2005 (21 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1184895989
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