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General Surgery

Theodore J. Southgate, MD

Works at hospitals in Newark, NJ · New Jersey

Summary

Dr. Theodore J. Southgate, MD is a general surgeon at 94 Old Short Hills Rd, Livingston, NJ 07039. Phone: (973) 322-7000. Accepts Medicare assignment. NPI 1730156217. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: General surgeon (Medicare lists General Surgery)
  • Address: 94 Old Short Hills Rd, Livingston, NJ 07039 · Directions
  • Phone: (973) 322‑7000
  • Medicare: Accepts Medicare assignment
  • Hospital: Newark Beth Israel Medical Center
  • Group practice: Barnabas Health Medical Group PC
  • Medical school: University Of Michigan Medical School · graduated 1980 (46 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Theodore J. Southgate, 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 Theodore J. Southgate accept Medicare assignment?
Yes. Medicare's clinician data says Theodore J. Southgate 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.
What is Theodore J. Southgate's NPI number?
1730156217. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Theodore J. Southgate works

Medicare's Facility Affiliation Data lists Theodore J. Southgate 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 Theodore J. Southgate is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Theodore J. Southgate as a member of this group (CMS data updated October 2, 2026).

  • Barnabas Health Medical Group PC1,070 clinicians in the group

Specialties

Find other General Surgery doctors in New Jersey →

Other general surgeons in Livingston

Clinicians with the same Medicare primary specialty in Livingston, NJ — not a recommendation.

All general surgeons in Livingston →

Other clinicians in Barnabas Health Medical Group PC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Michigan Medical School
Graduation year1980 (46 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1730156217
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians