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Edit this profileAt a glance
- 48 Creekview CT, Greenville, SC 29615
About Dr. Johnstone
Rudolph G. Johnstone, MD is a healthcare provider in Greenville, SC specializing in allergy & immunology. Rudolph trained at Medical University of South Carolina College of Medicine, graduating in 1986. According to Medicare claims data, Rudolph cared for 811 Medicare patients across 6,854 services. The services billed most often include test for allergy using allergenic extract, professional service for preparation and provision of 1 or more antigens, and professional service for multiple injections of allergen. This provider record is associated with NPI 1710977962.
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
Is this your home address or personal number? Hide it
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
Breathing & Airway
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
6,854 services · 811 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
2,603 | More often than most peers in Allergy & Immunology |
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
2,120 | More often than most peers in Allergy & Immunology |
| Professional service for multiple injections of allergen | Treatment | 95117 |
1,012 | More often than most peers in Allergy & Immunology |
| Professional service for single injection of allergen | Treatment | 95115 |
423 | More often than most peers in Allergy & Immunology |
| Test for allergy using allergenic extract injected into skin | Treatment | 95024 |
218 | Less often than most peers in Allergy & Immunology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
101 | As often as other peers in Allergy & Immunology |
| Administration and interpretation of patient-focused health risk assessment | Treatment | 96160 |
96 | More often than most peers in Allergy & Immunology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
231 | More often than most peers in Allergy & Immunology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
50 | More often than most 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 allergists at this location 4
Same specialty, same street address — most likely the same department or group.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other allergists in Greenville 5
Same specialty, same city.
More connections — 21 related providers in 3 groups
Trained at Medical University of South Carolina College of Medicine 7
Other providers in the same specialty who trained at the same institution.
Class of 1986 at Medical University of South Carolina College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Test for allergy using allergenic extract 6
Providers in SC who bill this service to Medicare most often.
Common questions
What does Dr. Johnstone specialize in?
Dr. Johnstone is an allergist in Greenville, SC. That is the designation recorded for this NPI in the federal registry, where it is listed as “Allergy & Immunology”.
NPI registry
Where is Dr. Johnstone located?
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
What is Dr. Johnstone's phone number?
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 1710977962. 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 go to medical school?
Dr. Johnstone attended Medical University of South Carolina College of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Johnstone been practicing?
Dr. Johnstone has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Johnstone do most often?
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.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.