William Johnstone, M.D.
NPI 1326433046 · Family Medicine Physician · Greenville, NC
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Johnstone, M.D. is a Family Medicine Physician provider in Greenville, NC (NPI 1326433046).
Provider details
- NPI number
- 1326433046
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2018-02894 (NC)
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
11 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
1,458 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 | 485 | $123 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 471 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 223 | $87 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 112 | $125 |
| Administration of Influenza Virus VaccineG0008 | 64 | $30 |
| Administration of Pneumococcal VaccineG0009 | 36 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 174 | 52 |
| Amlodipine Besylate | 145 | 47 |
| Rosuvastatin Calcium | 102 | 29 |
| Levothyroxine Sodium | 99 | 25 |
| Omeprazole | 91 | 35 |
| Escitalopram Oxalate | 81 | 26 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$909 across 40 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
Registry dates
- Enumerated
- 2015-03-31
- Last updated
- 2021-06-02
- Certified
- 2021-06-02
Frequently asked questions
- What is William Johnstone's NPI number?
- William Johnstone's National Provider Identifier (NPI) is 1326433046, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Johnstone's specialty?
- William Johnstone is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Johnstone located?
- William Johnstone's practice location on file with NPPES is 101 Heart Dr, Greenville, NC 27834-8982.
- What is William Johnstone's phone number?
- The practice phone number listed in the NPPES registry for William Johnstone is (252) 744-4611.
- Does William Johnstone accept Medicare?
- William Johnstone is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Johnstone's NPI active?
- Yes — William Johnstone's NPI (1326433046) is active in the NPPES registry as of the last update on 2021-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.