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Edit this profileAt a glance
- 48 Creekview CT, Greenville, SC 29615
About Dr. Johnstone
Reid F. Johnstone, MD is a healthcare provider in Greenville, SC specializing in allergy/immunology. Reid trained at University of South Carolina School of Medicine, graduating in 1997. Reid is also listed as specializing in allergy & immunology. According to Medicare claims data, Reid cared for 1,087 Medicare patients across 11,082 services. The services billed most often include injection, omalizumab, 5 mg, test for allergy using allergenic extract, and professional service for preparation and provision of 1 or more antigens. This provider record is associated with NPI 1013907260.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (864) 458-7431
- Email not available
Practice Locations
48 CREEKVIEW CT
Greenville, SC 29615
Conditions Commonly Evaluated or Treated
Within Allergy and Immunology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Allergies
Digestive
Drug allergies
Drug allergy
Emergency
Environmental
Eye
Food allergies
- Egg Allergy
- Milk Allergy
- Peanut Allergy
- Shellfish Allergy
- Soy Allergy
- Tree Nut Allergy
- Wheat Allergy
Immune conditions
Immunology
- Common Variable Immunodeficiency
- Frequent Infections
- Hereditary Angioedema
- Mast Cell Activation Syndrome
- Weak Immune System
Lung conditions
Respiratory
Sinus
Sinus conditions
Skin
Skin conditions
Procedures & services
Most searched procedures
Allergy treatments
- Allergy Drops
- Asthma Biologics
- Food Desensitization
- Peanut Allergy Pill Treatment
- Sublingual Dust Mite Treatment
- Under-The-Tongue Allergy Tablets
Diagnostic
- Asthma challenge test
- Drug Challenge Test
- Exercise Challenge Breathing Test
- Exhaled nitric oxide test
- Ice Cube Test for Cold Allergy
- Immune System Blood Test
- Nasal endoscopy
- Oral Food Challenge
- Peak Flow Test
- Penicillin Allergy Testing
- Spirometry
- Tryptase Blood Test
- Vaccine Challenge Test
- Vaccine Response Antibody Test
Infusion
Medication therapy
Medications
Preventive
Respiratory
Tests
- Allergy Blood Testing
- Allergy Skin Prick Test
- Blood Component Allergy Test
- Complement Blood Test
- Eosinophil Blood Count
- Intradermal Allergy Test
- Pulmonary function test
- Skin Test For Metal Allergy
- Total IgE Blood Test
Treatment
Procedures Most Often Billed to Medicare
11,082 services · 1,087 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
3,164 | More often than most peers in Allergy/Immunology |
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
1,500 | More often than most peers in Allergy/Immunology |
| Professional service for multiple injections of allergen | Treatment | 95117 |
797 | More often than most peers in Allergy/Immunology |
| Professional service for single injection of allergen | Treatment | 95115 |
510 | More often than most peers in Allergy/Immunology |
| Administration and interpretation of patient-focused health risk assessment | Treatment | 96160 |
255 | More than most peers in Allergy/Immunology |
| Test for allergy using allergenic extract injected into skin | Treatment | 95024 |
234 | Less often than most peers in Allergy/Immunology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
169 | As often as other peers in Allergy/Immunology |
| Professional service for preparation and provision of 4 stinging insect venom | Treatment | 95148 |
130 | Too few peers to compare |
| Professional service for preparation and provision of whole body extract of biting insect or arthropod antigens | Treatment | 95170 |
120 | Too few peers to compare |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
47 | As often as other peers in Allergy/Immunology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other allergy/immunology specialists at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other allergy/immunology specialists in Greenville 6
Same specialty, same city.
More connections — 19 related providers in 3 groups
Trained at University of South Carolina School of Medicine 6
Other providers in the same specialty who trained at the same institution.
Class of 1997 at University of South Carolina School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Test for allergy using allergenic extract 5
Providers in SC who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Johnstone?
Dr. Johnstone is an allergy/immunology in Greenville, SC. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Johnstone's address?
Dr. Johnstone is listed at 48 Creekview CT, Greenville, SC 29615. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Johnstone?
The number on file is (864) 458-7431. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Johnstone's NPI number?
Dr. Johnstone's National Provider Identifier is 1013907260. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Johnstone train?
Dr. Johnstone attended University of South Carolina School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Johnstone been practicing?
Dr. Johnstone has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Johnstone perform?
According to Medicare billing data, Dr. Johnstone provides treatments such as test for allergy using allergenic extract and professional service for preparation and provision of 1 or more antigens, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Johnstone confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Johnstone. If this is you, claiming it is free.
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