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

Obstetrics/Gynecology

Kristen Aversa, MD

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

Summary

Dr. Kristen Aversa, MD is an OB-GYN at 20 York St, New Haven, CT 06510. Phone: (203) 785-2140. Accepts Medicare assignment. In 2024, Kristen Aversa had 38 Original Medicare patients and 75 services. NPI 1538153788. 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: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 20 York St, New Haven, CT 06510 · Directions (1 more location)
  • Phone: (203) 785‑2140
  • Medicare: Accepts Medicare assignment
  • Hospitals: Bridgeport Hospital, Yale-New Haven Hospital
  • Group practice: Yale University
  • Medical school: Yale University School Of Medicine · graduated 1999 (27 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Kristen Aversa, 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 Kristen Aversa accept Medicare assignment?
Yes. Medicare's clinician data says Kristen Aversa 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 Kristen Aversa see?
In 2024, CMS data shows 38 Original Medicare patients and 75 services for Kristen Aversa. This counts Original Medicare only and measures volume, not quality.
What is Kristen Aversa's NPI number?
1538153788. 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 Kristen Aversa, 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 patients38
Services billed to Medicare75
Different services or procedures13
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)27 services
  2. Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (Q0091)14 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 pressure74%
  • Arthritis55%
  • Anxiety37%

Hospitals where Kristen Aversa works

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

Group practices

Medicare enrollment lists Kristen Aversa as a member of this group (CMS data updated October 2, 2026).

  • Yale University2,645 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Connecticut →

Other OB-GYNs in New Haven

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

All OB-GYNs in New Haven →

Other clinicians in Yale University

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

Clinician information

CredentialMD
Medical schoolYale University School Of Medicine
Graduation year1999 (27 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1538153788
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