Dr. Douglas T Johnston, DO



Internal Medicine     -  South Carolina,  Clemson

 Overview

Dr. Douglas T Johnston, DO works in Clemson, South Carolina is a specialist in Internal Medicine, Allergy & Immunology and graduated New York College Of Osteopathic Medicine, New York Institute Of Technology in 2001. Dr. Johnston is affiliated with Bon Secours St. Francis Health System and practicing for 22 years

 Specialties

  • Internal Medicine
  • Allergy & Immunology

 Conditions

• Airway Disorders
• Aspiration or Injection of Thyroid Cyst
• Cancer Treatment
• Chest CT (incl. Heart and Lungs)
• Chest X-Ray
• Chin Implant
• Chiropractic Plus Kinesiology (CPK)
• Chiropractic Subluxation Adjustments
• Cholecystectomy With Robotic Assistance
• Cholecystoenterostomy
  ...
• Cognitive Behavioral Therapy for Insomnia (CTB-I)
• Color Vision Testing
• Common Variable Immune Deficiency (CVID)
• COPD (Chronic Obstructive Pulmonary Disease)
• Device Implantation and Extraction
• Digital Impression System
• Eczema and Contact Dermatitis Due to Detergents
• Eczema and Contact Dermatitis Due to Metals
• Eosinophilic Esophagitis
• Epilepsy, X - Linked - Learning Disabilities - Behavior Disorders
• Esophageal Diseases
• Hand and Wrist Fracture and Dislocation Treatment
• Leber Hereditary Optic Neuropathy
• Lung Spirometry
• Metastatic Prostate Cancer
• Primary Care for Adults
• Seasonal Affective Disorder
• Sinusitis
• Structural Heart Disease Evaluations and Treatment
• Tongue-Tie
• Vaginal Candidiasis
 more details

 Procedures

• Acute Sinusitis
• Allergic Rhinitis
• Allergy Shots
• Allergy Skin Testing
• Anaphylactic Egg Allergy
• Anaphylactic Food Allergies
• Anaphylactic Milk and Dairy Allergy
• Anaphylactic Peanut Allergy
• Anaphylactic Shell Fish Allergy
• Anaphylactic Tree Nut Allergy
  ...
• Anaphylaxis
• Angioedema
• Animal Allergies
• Asthma
• Atopic Dermatitis (Eczema)
• Bronchitis
• Chronic Sinusitis
• Common Variable Immune Deficiency (CVID)
• COPD (Chronic Obstructive Pulmonary Disease)
• Dermatitis
• Drug or Food Challenge
• Eczema and Contact Dermatitis Due to Detergents
• Eczema and Contact Dermatitis Due to Metals
• Eosinophilia
• Eosinophilic Esophagitis
• Hives
• Hypogammaglobulinemia
• IgA Deficiency
• IgM Deficiency
• Itchy Skin
• Patch Testing
• Pinkeye (Conjunctivitis)
• Pollen Allergy
• Rash
• Toxic Effect of Venom
 more details

 Board Certifications

  • Board Certified by the American Board of Internal Medicine

 Years Since Graduation

  • 22

 State License

  • Alabama
  • South Carolina

 Education & Training

Medical School

New York College Of Osteopathic Medicine, New York Institute Of Technology

Old Westbury, NY, United States

Graduated: 2001

 Awards

Awards for Dr. Douglas T Johnston, DO are not present.

 Dr. Johnston Reviews

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 Office Locations


Primary location

 Allergy Partners
212 Frontage Road
South Carolina (SC)
Clemson
29631
 Phone:(864) 654-0066

Other Office Locations

 Allergy Partners Of The Upstate
62 Bear Drive
South Carolina (SC)
Clemson
29605
 Phone:(864) 220-3377
 Allergy Partners Of Upstate
48 Creekview Court
South Carolina (SC)
Clemson
29615
 Phone:(864) 458-7431
 Allergy Partners Of Upstate
672 Fairview Road Suite B
South Carolina (SC)
Clemson
29680
 Phone:(864) 962-9498

Accepting New Patients

  • Yes
* Please verify this information when scheduling an appointment.

 Map & Directions



Allergy Partners, 212 Frontage Road, Clemson, South Carolina (SC), 29631




 Insurances Accepted (check insurance plans)

  • Aetna
  • Aetna HMO
  • Blue Card PPO
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of North Carolina
  • Blue Options PPO
  • Choice Plus POS
  • Choice Plus POS II
  • Cigna
  • Cigna HMO
  • Cigna PPO
  • Coventry Health Care
  • Great West Healthcare-Cigna PPO
  • Navigate HMO
  • Navigate POS
  • Open Access Plus
  • Options PPO
  • UnitedHealthCare
  • Wellpath Preferred PPO

* Please verify this information when scheduling an appointment.

 Blog Posts

Blog Posts for Dr. Douglas T Johnston, DO are not present.

 Patients Questions

Patients questions for Dr. Douglas T Johnston, DO are not present.

 Affiliated Hospitals


Bon Secours St. Francis Health System photo


Bon Secours St. Francis Health System

1 Saint Francis Drive South Carolina SC, Greenville, 29601

Bon Secours St. Francis Health System is a non-profit hospital located in Greenville, SC. Procedures/Diagnosis costs are at the state average in 13 of 13 procedures. Length of Stay is at the state average in 12 of 13 procedures.



  •  Latest reviews for Internal Medicine specialists

  • Dr. C. is a pleasant, professional caring and fun doctor. Answered all my questions on a keep it simple level and explained everything. He took his time. I will refer them when needed. What a great group!
    07 February 2024
    (6)
  • He is the best if you need help with panic attacks. He fixed up my medication and I feel better.
    31 January 2024
    (40)
  • Dr. Jungblut and staff are all professional, fun, conscientious. Been going here for a long time. My children and grandchildren now see Dr. Jungblut too.
    24 January 2024
    (7)
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