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

Internal Medicine

William Valdez Bautista, MD

Works at hospitals in Auburn, NY · Syracuse, NY · New York

Summary

Dr. William Valdez Bautista, MD is an internal medicine doctor at 17 Lansing St, Auburn, NY 13021. Phone: (315) 255-7142. Accepts Medicare assignment. In 2024, William Valdez Bautista had 333 Original Medicare patients and 1,087 services. NPI 1538488879. 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 William Valdez Bautista, 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 William Valdez Bautista accept Medicare assignment?
Yes. Medicare's clinician data says William Valdez Bautista 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 William Valdez Bautista see?
In 2024, CMS data shows 333 Original Medicare patients and 1,087 services for William Valdez Bautista. This counts Original Medicare only and measures volume, not quality.
What is William Valdez Bautista's NPI number?
1538488879. 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 William Valdez Bautista, 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 patients333
Services billed to Medicare1,087
Different services or procedures10
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)599 services
  2. Hospital discharge day management, more than 30 minutes (99239)301 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)136 services
  4. Hospital discharge day management, 30 minutes or less (99238)15 services
  5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)12 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%
  • Heart failure63%
  • Arthritis58%
  • Ischemic heart disease56%
  • Anxiety45%

Hospitals where William Valdez Bautista works

Medicare's Facility Affiliation Data lists William Valdez Bautista 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 William Valdez Bautista is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists William Valdez Bautista as a member of this group (CMS data updated October 2, 2026).

  • Auburn Community Hospital60 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Auburn

Clinicians with the same Medicare primary specialty in Auburn, NY — not a recommendation.

All internal medicine doctors in Auburn →

Other clinicians in Auburn Community Hospital

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

Clinician information

CredentialMD
Graduation year1997 (29 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1538488879
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