Gregory Johnson, MD
NPI 1205936556 · Internal Medicine Physician · Piedmont, SC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Johnson, MD is a Internal Medicine Physician provider in Piedmont, SC (NPI 1205936556).
Provider details
- NPI number
- 1205936556
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 27071 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,151 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 279 | $120 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 174 | $59 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 160 | $45 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 134 | $42 |
| Hemoglobin A1c Level83036 | 102 | $10 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 192 | 55 |
| Amlodipine Besylate | 175 | 51 |
| Losartan Potassium | 137 | 42 |
| Omeprazole | 106 | 36 |
| Levothyroxine Sodium | 84 | 20 |
| Lisinopril | 77 | 21 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-25
- Last updated
- 2024-03-23
- Certified
- 2024-03-23
Frequently asked questions
- What is Gregory Johnson's NPI number?
- Gregory Johnson's National Provider Identifier (NPI) is 1205936556, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Johnson's specialty?
- Gregory Johnson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Johnson located?
- Gregory Johnson's practice location on file with NPPES is 1115 Wren School Rd, Piedmont, SC 29673-8033.
- What is Gregory Johnson's phone number?
- The practice phone number listed in the NPPES registry for Gregory Johnson is (864) 859-0740.
- Does Gregory Johnson accept Medicare?
- Gregory Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Johnson's NPI active?
- Yes — Gregory Johnson's NPI (1205936556) is active in the NPPES registry as of the last update on 2024-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.