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Anesthesiology

Carlos Frias, MD

Sees patients in West Orange, NJ · Wayne, NJ · Emerson, NJ … · New Jersey

Summary

Dr. Carlos Frias, MD is an anesthesiologist at 101 Old Short Hills Rd, Suite 217, West Orange, NJ 07052. Phone: (973) 731-4600. Accepts Medicare assignment. In 2024, Carlos Frias had 421 Original Medicare patients and 428 services. NPI 1235132440. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 101 Old Short Hills Rd, Suite 217, West Orange, NJ 07052 · Directions (3 more locations)
  • Phone: (973) 731‑4600
  • Medicare: Accepts Medicare assignment
  • Group practice: Gastroenterology Associates of New Jersey LLC (+3 more)
  • 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 Carlos Frias, 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 Carlos Frias accept Medicare assignment?
Yes. Medicare's clinician data says Carlos Frias 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 Carlos Frias see?
In 2024, CMS data shows 421 Original Medicare patients and 428 services for Carlos Frias. This counts Original Medicare only and measures volume, not quality.
What is Carlos Frias's NPI number?
1235132440. 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 Carlos Frias, 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 patients421
Services billed to Medicare428
Different services or procedures17
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Anesthesia for exam of colon using an endoscope (00812)134 services
  2. Anesthesia for other procedure on large bowel using an endoscope (00811)114 services
  3. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)76 services
  4. Anesthesia for procedure on small and large bowel using an endoscope (00813)71 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 cholesterol75%
  • High blood pressure68%
  • Arthritis48%
  • Ischemic heart disease29%
  • Diabetes27%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)23%

Practice locations

Addresses where Carlos Frias is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Carlos Frias as a member of these groups (CMS data updated October 2, 2026).

  • Gastroenterology Associates of New Jersey LLC80 clinicians in the group
  • Barnabas Health Multispecialty23 clinicians in the group
  • Advanced Ambulatory Anesthesia LLC9 clinicians in the group
  • Premier Medical Alliance LLC4 clinicians in the group

Specialties

Find other Anesthesiology doctors in New Jersey →

Other anesthesiologists in West Orange

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

All anesthesiologists in West Orange →

Other clinicians in Gastroenterology Associates of New Jersey LLC

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

Clinician information

CredentialMD
Graduation year1980 (46 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1235132440
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 October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  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