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

Internal Medicine

You S. Tay, MD

Sees patients in Stockton, CA · California

Summary

You S. Tay, MD (Internal Medicine) is enrolled with Medicare at 1 practice location in Stockton, CA. NPI 1508032350. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about You S. Tay, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
18Years since medical school (graduated 2008)
University Of Nevada School Of MedicineMedical school
FemaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Where does You S. Tay see patients?
Medicare's clinician data lists 1 practice location in Stockton, CA. Call before your visit to confirm the address.
What is You S. Tay's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Endocrinology.
Does You S. Tay accept Medicare assignment?
Yes. Medicare's clinician data says You S. Tay accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for You S. Tay?
(209) 476-2000, as listed in official Medicare / NPI Registry data.
What is You S. Tay's NPI number?
1508032350. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where You S. Tay is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists You S. Tay as a member of this group (CMS data updated 2026-10-02).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Stockton

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

All internal medicine doctors in Stockton →

Clinician information

CredentialMD
Medical schoolUniversity Of Nevada School Of Medicine
Graduation year2008
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1508032350
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians