Illisia Johnston, NP-C
NPI 1003486556 · Family Nurse Practitioner · Laurel, MS
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Illisia Johnston, NP-C is a Family Nurse Practitioner provider in Laurel, MS (NPI 1003486556).
Provider details
- NPI number
- 1003486556
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- F06212134 (MS)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
4 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 344 | 128 |
| Metformin Hclbrand: Metformin Hcl Er | 318 | 119 |
| Tirzepatidebrand: Mounjaro | 188 | 59 |
| Ondansetron Hcl | 115 | 86 |
| Topiramate | 87 | 37 |
| Linaclotidebrand: Linzess | 50 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$440 across 22 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
- 2021-06-28
- Last updated
- 2024-10-03
- Certified
- 2024-10-03
Frequently asked questions
- What is Illisia Johnston's NPI number?
- Illisia Johnston's National Provider Identifier (NPI) is 1003486556, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Illisia Johnston's specialty?
- Illisia Johnston is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Illisia Johnston located?
- Illisia Johnston's practice location on file with NPPES is 1008 N 15th Ave, Laurel, MS 39440-2656.
- What is Illisia Johnston's phone number?
- The practice phone number listed in the NPPES registry for Illisia Johnston is (601) 426-5125.
- Does Illisia Johnston accept Medicare?
- Illisia Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Illisia Johnston's NPI active?
- Yes — Illisia Johnston's NPI (1003486556) is active in the NPPES registry as of the last update on 2024-10-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.