Summary

Board-certified in colon and rectal surgery and surgery, Dr. Sergio Casillas-Romero treats hemorrhoids, diverticular disease, and colon polyps, and performs colonoscopy and lower GI endoscopy. He is affiliated with The William W. Backus Hospital and speaks English and Spanish.

Dr. Casillas-Romero sees patients in Norwich and Waterford, Connecticut. Patients on Vitals rate Dr. Casillas-Romero 4.18 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.2
  • 41 insurance plans accepted
  • speaks English, Spanish
  • 7 written reviews
  • 1 specialty
  • 10 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr Sergio Casillas-Romero has 2 locations

Hartford HealthCare Medical Group Specialty Care - Colorectal Surgery - Norwich

330 Washington St Ste 430Norwich, CT 06360

Hartford HealthCare Medical Group Specialty Care - Waterford

5 Dayton Rd Ste 201Waterford, CT 06385

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Dr Sergio Casillas-Romero, MD
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Dr Sergio Casillas-Romero, MDDr. Grigoriy Vitalyevich Klimovich, MDDr. Ronald Paul Hantman, MDDr. John Ching-Yi Lee, MD
SurgerySurgerySurgerySurgery
Accepts New Patients Accepts New Patients
4.2 
4.8 
4.2 
13 Years of Experience 54 Years of Experience 25 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish
Norwich , CTMiddletown , CTFall River , MAWaterford , CT
Med School: University Of South Carolina School Of Medicine Columbia Med School: The Robert Larner Md College Of Medicine At The University Of Vermont Med School: University Of Connecticut School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr Sergio Casillas-Romero

  • AARP
  • Aetna
  • Aetna - HMO
  • Aetna - Medicare
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • CarePartners of Connecticut
  • CHAMPVA
  • Cigna
  • Cigna - HMO
  • ConnectiCare
  • ConnectiCare - Medicare
  • Empire Plan
  • First Health (Coventry Health Care)
  • Harvard Pilgrim Health Care
  • Harvard Pilgrim Health Care - HMO
  • Health New England
  • Health New England - HMO
  • Humana
  • Humana - HMO
  • Humana - Medicare
  • Medicaid - Medicaid
  • Medicaid - Medicaid (HMO Plans)
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Meritain Health
  • Neighborhood Health Plan
  • Optum Health
  • Oscar Health Insurance
  • Priority Health
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • UnitedHealthcare - Medicare (Advantage HMO)
  • UnitedHealthcare Oxford
  • UnitedHealthcare Oxford - HMO
  • Wellcare
  • Wellcare - Medicare

Medical Specialties

Dr Sergio Casillas-Romero has the following specialty

Specialty Expertise

Dr Sergio Casillas-Romero has the following 10 areas of expertise

  • Abdominal Pain
  • Banding
  • Bowel Resection
  • Colon Cancer
  • Colonoscopy
  • Diverticulitis
  • Hemorrhoidectomy
  • Hemorrhoids
  • Rectal Bleeding
  • Rectal Pain

Certifications, License, & Education

Dr Sergio Casillas-Romero holds an expired medical license in the state of Connecticut. They are board certified in Colon and Rectal Surgery and Surgery by the American Board of Colon & Rectal Surgery and American Board of Surgery.

Board Certifications

Board certified in Colon and Rectal Surgery by the American Board of Colon & Rectal Surgery and board certified in Surgery by the American Board of Surgery.

Medical License

Medical Doctor with an expired medical license in the state of Connecticut that expired in 2026.

NPI Number

Dr Casillas-Romero's NPI number is 1417035338.

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Frequently Asked Questions

Is Dr Sergio Casillas-Romero accepting new patients?
Dr Sergio Casillas-Romero is accepting new patients on Vitals. View Dr Sergio Casillas-Romero's profile on Vitals to make an appointment.
How can I make an appointment with Dr Sergio Casillas-Romero?
You can find contact information for Dr Sergio Casillas-Romero here on Vitals.
Does Dr Sergio Casillas-Romero accept my insurance?
You can see the insurance plans that Dr Sergio Casillas-Romero accepts on their Vitals profile.
Which hospitals is Dr Sergio Casillas-Romero affiliated with?
Dr Sergio Casillas-Romero is affiliated with The William W Backus Hospital.
Where is Dr Sergio Casillas-Romero's office located?
Dr Sergio Casillas-Romero's office is located at 330 Washington St Ste 430, Norwich, CT, 06360.

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