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Emergency Medicine

Robert Hallock, MD

Works at hospitals in Appleton, WI · San Antonio, TX · Wisconsin, Texas

Summary

Robert Hallock, MD (Emergency Medicine) is listed by Medicare at 3 hospitals in Appleton, WI and San Antonio, TX. NPI 1043265804. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Robert Hallock, 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

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
27Years since medical school (graduated 1999)
University Of Connecticut School Of MedicineMedical school
MaleGender (as listed)
Emergency Medicine Services of TX, PLLCGroup practice (+1 more)

Quick answers

Which hospitals does Robert Hallock work at?
Medicare's official clinician data lists Robert Hallock at 3 hospitals: Ascension NE Wisconsin - St Elizabeth Campus, Methodist Hospital and Methodist Hospital Stone Oak. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Robert Hallock see patients?
Medicare's clinician data lists 3 practice locations, including Helotes, TX, Oshkosh, WI and Milwaukee, WI. Call before your visit to confirm the address.
What is Robert Hallock's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Robert Hallock accept Medicare assignment?
Yes. Medicare's clinician data says Robert Hallock 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 Robert Hallock?
(210) 575-2285, as listed in official Medicare / NPI Registry data.
What is Robert Hallock's NPI number?
1043265804. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Robert Hallock works

Medicare's Facility Affiliation Data lists Robert Hallock at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Robert Hallock is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Robert Hallock as a member of these groups (CMS data updated 2026-10-02).

  • Emergency Medicine Services of TX, PLLC400 clinicians in the group
  • Emergency Medicine Specialists SC227 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Texas →

Other emergency medicine doctors in Helotes

Clinicians with the same Medicare primary specialty in Helotes, TX — not a recommendation.

All emergency medicine doctors in Helotes →

Clinician information

CredentialMD
Medical schoolUniversity Of Connecticut School Of Medicine
Graduation year1999
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1043265804
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians