Samantha Johnston, PA-C
NPI 1336514645 · Medical Physician Assistant · Cottonwood, AZ
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Samantha Johnston, PA-C is a Medical Physician Assistant provider in Cottonwood, AZ (NPI 1336514645).
Provider details
- NPI number
- 1336514645
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 6297 (AZ)
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 tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 91 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 183 | 46 |
| Lisinopril | 168 | 48 |
| Losartan Potassium | 149 | 40 |
| Atorvastatin Calcium | 132 | 39 |
| Gabapentin | 126 | 33 |
| Metformin Hcl | 120 | 39 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-12-11
- Last updated
- 2026-06-02
- Certified
- 2026-06-02
Frequently asked questions
- What is Samantha Johnston's NPI number?
- Samantha Johnston's National Provider Identifier (NPI) is 1336514645, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Samantha Johnston's specialty?
- Samantha Johnston is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Samantha Johnston located?
- Samantha Johnston's practice location on file with NPPES is 51 Brian Mickelsen Pkwy, Cottonwood, AZ 86326-3610.
- What is Samantha Johnston's phone number?
- The practice phone number listed in the NPPES registry for Samantha Johnston is (928) 639-8132.
- Does Samantha Johnston accept Medicare?
- Samantha Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Samantha Johnston's NPI active?
- Yes — Samantha Johnston's NPI (1336514645) is active in the NPPES registry as of the last update on 2026-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.