Stephen Johnston, MD
NPI 1730525841 · Diagnostic Radiology Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Johnston, MD is a Diagnostic Radiology Physician provider in Tucson, AZ (NPI 1730525841).
Provider details
- NPI number
- 1730525841
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 330999 (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
3,375 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 726 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 356 | $39 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 177 | $87 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 153 | $36 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 141 | $83 |
| Ct Scan of Upper Spine Without Contrast72125 | 136 | $47 |
Practice location
Mailing address
Additional practice locations (1)
- 4250 Hospital DrMarianna, FL 32446-1917Phone: (850) 526-2200Fax: (850) 718-2844
Registry dates
- Enumerated
- 2013-05-15
- Last updated
- 2026-02-06
- Certified
- 2026-02-06
Frequently asked questions
- What is Stephen Johnston's NPI number?
- Stephen Johnston's National Provider Identifier (NPI) is 1730525841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Johnston's specialty?
- Stephen Johnston is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Johnston located?
- Stephen Johnston's practice location on file with NPPES is 2492 E River Rd, Tucson, AZ 85718-9552.
- What is Stephen Johnston's phone number?
- The practice phone number listed in the NPPES registry for Stephen Johnston is (520) 722-8994.
- Does Stephen Johnston accept Medicare?
- Stephen Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Johnston's NPI active?
- Yes — Stephen Johnston's NPI (1730525841) is active in the NPPES registry as of the last update on 2026-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.