James Johnson, MD
NPI 1609923416 · Infectious Disease Physician · Greenville, SC
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Johnson, MD is a Infectious Disease Physician provider in Greenville, SC (NPI 1609923416).
Provider details
- NPI number
- 1609923416
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35446 (SC)
Specialties & taxonomies
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
452 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 189 | $74 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 76 | $162 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 67 | $118 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 33 | $111 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 27 | $163 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 67 | 11 |
| Cefadroxil | 47 | 19 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 42 | 11 |
| Ethambutol Hcl | 42 | — |
| Cephalexin | 39 | 11 |
| Amikacin Liposomal/Neb.accessrbrand: Arikayce | 32 | — |
| Rifampin | 30 | — |
| Fluconazole | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$195 across 11 records (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
Additional practice locations (1)
- 317 Saint Francis Dr Ste 340Greenville, SC 29601-3914Phone: (864) 255-1834
Registry dates
- Enumerated
- 2007-01-04
- Last updated
- 2025-08-07
- Certified
- 2025-08-07
Frequently asked questions
- What is James Johnson's NPI number?
- James Johnson's National Provider Identifier (NPI) is 1609923416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Johnson's specialty?
- James Johnson is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is James Johnson located?
- James Johnson's practice location on file with NPPES is 890 W Faris Rd, Greenville, SC 29605-4291.
- What is James Johnson's phone number?
- The practice phone number listed in the NPPES registry for James Johnson is (864) 455-9033.
- Does James Johnson accept Medicare?
- James Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Johnson's NPI active?
- Yes — James Johnson's NPI (1609923416) is active in the NPPES registry as of the last update on 2025-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.