John Johnston, MD
NPI 1649241894 · Internal Medicine Physician · Burlington, NC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Johnston, MD is a Internal Medicine Physician provider in Burlington, NC (NPI 1649241894).
Provider details
- NPI number
- 1649241894
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 200100156 (NC)
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 tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,833 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 567 | $120 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 493 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 316 | $8 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 309 | $15 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 253 | $3 |
| Blood Test, Comprehensive Group of Blood Chemicals |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 179 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 786 | 208 |
| Amlodipine Besylate | 755 | 204 |
| Levothyroxine Sodium | 633 | 143 |
| Omeprazole | 548 | 140 |
| Losartan Potassium | 538 | 147 |
| Metformin Hcl | 504 | 126 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-27
- Last updated
- 2023-09-28
- Certified
- 2020-01-28
Frequently asked questions
- What is John Johnston's NPI number?
- John Johnston's National Provider Identifier (NPI) is 1649241894, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Johnston's specialty?
- John Johnston is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Johnston located?
- John Johnston's practice location on file with NPPES is 1234 Huffman Mill Road, Burlington, NC 27215-8700.
- What is John Johnston's phone number?
- The practice phone number listed in the NPPES registry for John Johnston is (336) 538-1234.
- Does John Johnston accept Medicare?
- John Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Johnston's NPI active?
- Yes — John Johnston's NPI (1649241894) is active in the NPPES registry as of the last update on 2023-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.