We are committed to building healthy communities one patient at a time
About PACT
Provider Excellence. Coordinated Care. Time & Cost Efficiencies.
PACT (Physicians Alliance of Connecticut) is a multi-specialty group of independent physicians that have banded together to maintain a private-practice style of healthcare services in the New Haven area. By becoming divisions of PACT, these practices retain and protect their individual cultures and community connections while using shared resources to handle non-medical issues such as billing and technology support.
Physician Partners
Healthcare Providers
Office Locations
Years Serving the Community
Our Practices & Services
A Growing Suite of Patient Services
PACT includes divisions covering multiple specialties, with a core focus on primary care providers. Our specialties are internal medicine, general and colorectal surgery, dermatology, rheumatology (musculoskeletal and autoimmune disease treatment), nephrology (kidney care and treatment), and gastroenterology (care and treatment of the stomach, intestines and liver), including the Healthy Weight Center of Connecticut.
Primary Care
General Surgery
PACT offers specialized treatment services and procedures in the realm of general surgery.
Dermatology
PACT helps treat medical and cosmetic dermatologic needs such as skin, hair, and nail disorders
Rheumatology
PACT rheumatology helps treat and diagnose autoimmune diseases as well as conditions affecting muscles, tendons, ligaments, bones, and joints.
Kidney (Nephrology)
PACT nephrologists specialize in effectively diagnosing and treating a diverse range of kidney conditions.
Gastroenterology
PACT provides diagnosis and treatment for a wide range of gastrointestinal (GI) disorders, ensuring comprehensive care for our patients.
Join PACT
Careers with a Purpose
At the heart of Physicians Alliance of Connecticut are our people. We are a multi-specialty group with a simple but powerful mission: to preserve and sustain medical practices owned and managed by physicians in our community. From our clinical and non-clinical positions, you’ll have the opportunity to impact the health of the communities in which we live.
MyChartPLUS
Your Personal Health Portal
The PACT MyChartPLUS is a secure online portal that gives patients convenient, 24-hour access to personal healthcare information online.
- Recent provider visit details
- Lab results, medications, and immunizations
- Request prescription refills
- Pay your bills online
- Schedule non-urgent appointments
- Exchange secure emails with PACT providers
- Update contact information
Testimonials
What our patients are saying
I went for my routine physical 5 years ago with Dr. Christa Wittmann. She did not like my GI discomfort and immediately sent me for imaging. She found stage one ovarian cancer (very rare to catch it this early) I went onto successfully fighting this most aggressive form of cancer (serious) She took that time to listen to me and how I felt – I did not suspect anything – she did!
—HealthGrades
Dr. Trainor is an excellent practitioner. She is highly skilled and compassionate professional who consistently goes above and beyond. Her deep expertise, combined with her warm and approachable demeanor, makes her a standout in her field. Thank you!!
HealthGrades
For the first time in 30+ years I feel like I have found a doctor who actually listened to my concerns. She went line by line through my medical history and my family history. Dr Eris is kind and straight forward. She was very thorough in every aspect of my exam and ran lots of bloodwork to cover all concerns I had. Her team is just as wonderful as she is. From scheduling to follow up and referrals; Dr Eris’ team made the whole process very smooth.
—HealthGrades
I have been a patient of Dr. Lazarides for 10 years. He is professional, knowledgeable, caring and has a good sense of humor. Dr. Lazarides takes the time to listen to any of my complaints and works with me for the best solution for me, for my budget, and for my health. The staff at the office are fantastic and friendly. I would not hesitate to recommend Dr Lazarides.
—HealthGrades
Dr. Lena Wu Rivas is by far the best Medical provider I have seen in my 61 years. She is always friendly, thoughtful, and puts our concerns first. I can not speak more highly of her. The staff is always helpful and my experience with other medical professionals in this office has always been above my level of standards.
—HealthGrades
As a physician myself, choosing the best physician is critical. It is without reservation that I would recommend Dr. Hass to friends or family. His intellect, patient care and compassion are extraordinary. Highly recommend.—Dr. Mark Taylor, MD
—HealthGrades
Featured Providers
Shanna M. Gannon, PA-C
General Surgery
Featured Providers
Shanna M. Gannon, PA-C
General Surgery
FEATURED PROVIDERS
Ravali Reddy Inja, M.D. – Starting May 4th 2026
Sleep Medicine
Dr. Inja sees patients in our Orange and Guilford offices. She is affiliated with St. Vincent’s Medical Center.
FEATURED PROVIDERS
Nataliia Dyatlova, M.D.
Internal Medicine
Dr. Nataliia Dyatlova practices in our Branford, Fairfield, North Haven, and Orange offices. She is affiliated with St. Vincent’s Medical Center, Gaylord Hospital, and Yale New Haven Hospital.
FEATURED PROVIDERS
Beth Valashinas, D.O., FACR
Rheumatology
Dr. Valashinas sees patients in our Hamden and Milford offices. She is affiliated with St. Vincent’s Medical Center.
FEATURED PROVIDERS
Sarah Trainor, M.D.
Internal Medicine
Dr. Trainor is a primary care provider who specializes in preventative health services and geriatric care and works in our West Haven office. She is affiliated with St. Vincents Medical Center, Yale New Haven Hospital and Yale New Haven St. Raphael’s campus.
FEATURED PROVIDERS
Angelin Shajan, D.O.
Family Medicine, Family Practice
Dr. Shajan practices in our West Haven office Monday through Thursday and on Fridays until noon. She is affiliated with St. Vincent’s Medical Center, Yale New Haven Hospital, and Yale New Haven St. Raphael’s campus.
FEATURED PROVIDERS
Katherine Krevolin, APRN
Gastroenterology
Katherine Krevolin, APRN works in our Hamden and Guilford offices. She is affiliated with S. Vincent’s Medical Center, Yale New Haven Health St. Raphaels campus.
FEATURED PROVIDERS
Christopher Husko, D.O.
Surgery
Now Welcoming New Patients!
Dr. Husko works in our Ansonia and Hamden offices. He is affiliated with Griffin Hospital, Mid-State Medical Center, and St. Vincent’s Medical Center.
FEATURED PROVIDERS
Shanna M. Gannon, PA-C
Surgery
Shanna M. Gannon, Physician Assistant, practices in our Hamden and Ansonia offices. She is affiliated with St. Vincent’s Medical Center, Griffin Hospital, Mid-State Medical Center, Yale New Haven Hospital York Street campus and Yale New Haven Hospital St. Raphael’s campus. Shanna specializes in Fecal Incontinence, Hernia Repair and Surgery.
