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Clinic Type

Endocrinology

Address

190 Universal Drive North Suite 103 North Haven, CT 06473

Phone

203.239.8380

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Emergency Care

In an emergency, call 911

Services Offered

  • Endocrinology

Team

  • Isabelle Louis — APRN, DNP
  • Sunil Raj Thomas — MD

Insurance & Payment

  • Aetna
  • Anthem
  • BCBS Medicare
  • CarePartners of Connecticut
  • Cigna Healthcare
  • Colonial Cooperative Care
  • Community Health Network of Connecticut, Inc.
  • Connecticare
  • Connecticare Commercial
  • Connecticare Medicare
  • Corvel
  • Coventry
  • Essence Healthcare
  • Evercare
  • First Health Group Corp.
  • Focus
  • Health Connecticut
  • Health Direct
  • Health New England
  • Healthy Connecticut
  • HMC/ Northeast Healthcare
  • Medspan Commercial
  • Medspan Medicare
  • Northeast Health Direct
  • One Health Plan/ Great-West Healthcare
  • Oxford Health Plans
  • Prime Health Services
  • Private Health Care Systems, Inc.
  • Senior Whole Health
  • United Healthcare
  • WellCare of Connecticut, Inc.

Languages Spoken

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • Hartford HealthCare Medical Group Official Website: 4.9/5 stars based on 155 surveys (155 surveys)
  • Third-party review sites (Healthgrades, Vitals, MedicalNewsToday): 3.0 to 5.0 stars (varies by platform) (1 to 3 reviews per platform)

Patients praise

  • Professional and knowledgeable care
  • Unrushed, thorough consultations
  • Providers listen to concerns and answer questions well
  • Effective explanation of conditions and treatment plans
  • High official ratings from Hartford HealthCare surveys

Common complaints

  • Rude and unhelpful office staff
  • Lack of response to patient communications (MyChart/phone)
  • Difficulties with appointment scheduling
  • Dissatisfaction with provider's decisions

"Not often these days that you find a great doctor. My first visit was unrushed and through. He took the time to listen to my concerns, answered all of my questions, explained exactly how we were going to proceed and why."

MedicalNewsToday/Healthgrades review for Dr. Sunil Thomas

"Office staff was rude and not helpful. Doctor did not respond to MyChart or phone question."

Healthgrades review for Dr. Sunil Thomas

"Dr. Louis(endocrinologist)takes excellent care of my mom. She is very professional ,knowledgeable,& took her time to address any concerns thoroughly."

MapQuest review for Hartford HealthCare Medical Group North Haven

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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North Haven, CT·Endocrinology

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North Haven, CT·Endocrinology

Summary: Northeast Medical Group (NEMG) is a Yale New Haven Health System-affiliated nonprofit medical foundation offering endocrine (endocrinology) services alongside a broad range of specialties. With over 130 community practices across Connecticut, Rhode Island, and Westchester County, NY, NEMG provides comprehensive care through affiliated hospitals and practitioners. For endocrine-related care in the North Haven area, NEMG can connect you to endocrinology specialists within the NEMG network and YNHHS system, leveraging broad resources and hospital access (e.g., Yale New Haven Hospital and others) to support diagnosis, treatment, and ongoing management. Visit northeastmedicalgroup.org for physician directories, locations, and contact information.

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