Dr. Johnstone graduated from the University Of South Carolina School Of Medicine in 1997. Dr. Johnstone works in Greenville, SC and 2 other locations and specializes in Allergy & Immunology. Dr. Johnstone is affiliated with Bon Secours St Francis Downtown, Greenville Memorial Hospital, Oconee Memorial Hospital and St Francis Hospital Eastside.


Years Experience: 22

Conditions Treated

Dr. Johnstone's Specialties

Dr. Johnstone's Education & Training

Medical School
University Of South Carolina School Of Medicine; Graduated 1997


  • Overall Rating

  • Rate
    Explains conditions & treatments

  • Rate
    Takes time to answer my questions

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    Provides follow-up as needed

Dr. Johnstone's Accepted Insurance

Please verify insurance information directly with your doctor's office as it may change frequently.

Insurance Plans

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • BCBS Blue Card PPO

Dr. Johnstone's Office Information & Appointments

This physician has multiple office locations. See Office Information for details.


Allergy Partners PA
Allergy Partners Of The Upstate

62 Bear Dr
Greenville, SC 29605

Get Directions

Tel: (864) 220-3377

Fax: (864) 220-3301

Practice Website: allergypartners/upstate.com

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

M 8:30 AM - 5:00 PM
T 8:30 AM - 5:00 PM
W 8:30 AM - 5:00 PM
T 8:30 AM - 5:00 PM
F 8:30 AM - 2:30 PM
S Closed
S Closed

Other Physicians in Dr. Johnstone's Practice