Aaron Johnson, DO
NPI 1477909521 · Emergency Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aaron Johnson, DO is a Emergency Medicine Physician provider in Phoenix, AZ (NPI 1477909521).
Provider details
- NPI number
- 1477909521
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 007736 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
674 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 323 | $167 |
| Critical Care, First 30-74 Minutes99291 | 180 | $203 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 142 | $115 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 16 | $68 |
| Emergent Insertion of Breathing Tube Into Windpipe Using an Endoscope31500 | 13 | $133 |
Typical Medicare-allowed amounts for these services range $68–$203 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 52 | 52 |
| Cefdinir | 48 | 48 |
| Ondansetronbrand: Ondansetron Odt | 27 | 27 |
| Pantoprazole Sodium | 19 | 19 |
| Azithromycin | 16 | 16 |
| Prednisone | 16 | 16 |
| Lactulose | 14 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-05-09
- Last updated
- 2018-10-19
Frequently asked questions
- What is Aaron Johnson's NPI number?
- Aaron Johnson's National Provider Identifier (NPI) is 1477909521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aaron Johnson's specialty?
- Aaron Johnson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aaron Johnson located?
- Aaron Johnson's practice location on file with NPPES is 2601 E Roosevelt St, Phoenix, AZ 85008-4973.
- What is Aaron Johnson's phone number?
- The practice phone number listed in the NPPES registry for Aaron Johnson is (208) 201-1301.
- Does Aaron Johnson accept Medicare?
- Aaron Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aaron Johnson's NPI active?
- Yes — Aaron Johnson's NPI (1477909521) is active in the NPPES registry as of the last update on 2018-10-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.