Summary

Dr. Johnston graduated from the University of Texas Southwestern Medical School in 1990. He works in Greenwich, CT and specializes in Emergency Medicine. Dr. Johnston is affiliated with Samuel S Stratton Department Of Veterans Affairs Medical Center.

Quick Facts

  • 1
  • 36 years of experience
  • 37 insurance plans accepted
  • speaks English
  • University Of Texas Southwestern Medical School
  • 1 specialty
  • 1 board certification
  • 1 hospital affiliation
  • 1 office location
  • Male

Office Location

Greenwich Hospital

5 Perryridge RdGreenwich, CT 06830

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Dr. Gregory Scott Johnston, MDDr. Alicia Sta Maria Almendral, MDChristopher Carleo, MDDr. Frank Byoung Lee, MD
Emergency MedicineEmergency MedicineEmergency MedicineEmergency Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
4.6 
4.3 
36 Years of Experience 27 Years of Experience 28 Years of Experience 23 Years of Experience
No Virtual Visit Option No Virtual Visit Option Virtual Visit Available Virtual Visit Available
Speaks English Speaks English, Spanish Speaks English Speaks English, Spanish, Tagalog, Portuguese
Greenwich , CTWoodside , NYEast Setauket , NYAllen , TX
Med School: University Of Texas Southwestern Medical School Med School: University Of Santo Tomas Faculty Of Medicine And Surgery Med School: Suny Stony Brookhealth Med School: New York Medical College
Current Profile
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Insurance Plans Accepted by Dr. Gregory Scott Johnston

  • AARP
  • Aetna
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - Federal Employees Program
  • Blue Cross Blue Shield of Arizona
  • CHAMPVA
  • Cigna
  • Community Health Choice
  • Fidelis Care (NY)
  • Health Plan of San Joaquin
  • HealthSmart
  • Humana
  • Inland Empire Health Plan
  • Kaiser Permanente
  • Medica
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Meritain Health
  • Molina Healthcare
  • Molina Healthcare - HMO
  • Molina Healthcare - Medicaid
  • Nippon Life Benefits
  • PreferredOne
  • Presbyterian Health Plan/Presbyterian Insurance Company
  • Providence Health Plans
  • Sanford Health Plan
  • SCAN Health Plan
  • Transamerica
  • Tricare
  • Triwest Healthcare Alliance
  • Tufts Health Plan
  • UCare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • University of Arizona Health Plans

Medical Specialties

Dr. Gregory Scott Johnston has the following specialty

Certifications, License, & Education

36 Years Experience

MEDICAL LICENSE

Medical Doctor, New Mexico, 2026, Active

EDUCATION & TRAINING

Medical School

University Of Texas Southwestern Medical SchoolGraduated in 1990

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Frequently Asked Questions

Which hospitals is Dr. Gregory Johnston affiliated with?
Dr. Gregory Johnston is affiliated with Samuel S Stratton Department Of Veterans Affairs Medical Center.
Does Dr. Gregory Johnston accept virtual/telehealth appointments?
Dr. Gregory Johnston has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Gregory Johnston's office located?
Dr. Gregory Johnston's office is located at 5 Perryridge Rd, Greenwich, CT, 06830.
Does Dr. Gregory Johnston accept my insurance?
You can see the insurance plans that Dr. Gregory Johnston accepts on their Vitals profile.
Is Dr. Gregory Johnston accepting new patients?
Dr. Gregory Johnston has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.

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