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

Gastroenterology

Pietro G. Andres, MD

Works at hospitals in Bridgeport, CT · New Haven, CT · Connecticut

Summary

Dr. Pietro G. Andres, MD is a gastroenterologist at 1931 Black Rock Tpke, Fairfield, CT 06825. Phone: (203) 384-8681. Accepts Medicare assignment. In 2024, Pietro G. Andres had 321 Original Medicare patients and 543 services. NPI 1588607386. 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.

  • Specialty: Gastroenterologist (Medicare lists Gastroenterology)
  • Address: 1931 Black Rock Tpke, Fairfield, CT 06825 · Directions (5 more locations)
  • Phone: (203) 384‑8681
  • Medicare: Accepts Medicare assignment
  • Hospitals: Bridgeport Hospital, Yale-New Haven Hospital
  • Group practice: Northeast Medical Group Inc (+1 more)
  • Medical school: Harvard Medical School · graduated 1993 (33 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Pietro G. Andres, 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 Pietro G. Andres accept Medicare assignment?
Yes. Medicare's clinician data says Pietro G. Andres 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 Pietro G. Andres see?
In 2024, CMS data shows 321 Original Medicare patients and 543 services for Pietro G. Andres. This counts Original Medicare only and measures volume, not quality.
What is Pietro G. Andres's NPI number?
1588607386. 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 Pietro G. Andres, 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 patients321
Services billed to Medicare543
Different services or procedures35
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)90 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)81 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)77 services
  4. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)66 services
  5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)29 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%
  • Arthritis55%
  • Anxiety33%
  • Diabetes32%
  • Ischemic heart disease31%

Hospitals where Pietro G. Andres works

Medicare's Facility Affiliation Data lists Pietro G. Andres 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 Pietro G. Andres is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Pietro G. Andres as a member of these groups (CMS data updated October 2, 2026).

  • Northeast Medical Group Inc1,360 clinicians in the group
  • Rehabilitation Associates Inc529 clinicians in the group

Specialties

Find other Gastroenterology doctors in Connecticut →

Other gastroenterologists in Fairfield

Clinicians with the same Medicare primary specialty in Fairfield, CT — not a recommendation.

All gastroenterologists in Fairfield →

Other clinicians in Northeast Medical Group Inc

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

Clinician information

CredentialMD
Medical schoolHarvard Medical School
Graduation year1993 (33 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1588607386
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