Justin Lo, D.O.
NPI 1740667526 · Emergency Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Lo, D.O. is a Emergency Medicine Physician provider in Phoenix, AZ (NPI 1740667526).
Provider details
- NPI number
- 1740667526
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- OP61155048 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
536 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 292 | $172 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 162 | $8 |
| Critical Care, First 30-74 Minutes99291 | 62 | $209 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 20 | $118 |
Typical Medicare-allowed amounts for these services range $8–$209 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 36 | 36 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 35 | 35 |
| Naproxen | 32 | 32 |
| Methocarbamol | 31 | 30 |
| Cephalexin | 28 | 28 |
| Cefdinir | 20 | 20 |
| Dicyclomine Hcl | 18 | 16 |
| Azithromycin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24 across 1 record (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
Additional practice locations (1)
- 5740 Southwood DrLake Oswego, OR 97035-6736Phone: (503) 539-9132
Registry dates
- Enumerated
- 2015-04-30
- Last updated
- 2022-07-13
- Certified
- 2022-07-13
Frequently asked questions
- What is Justin Lo's NPI number?
- Justin Lo's National Provider Identifier (NPI) is 1740667526, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Lo's specialty?
- Justin Lo is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Lo located?
- Justin Lo's practice location on file with NPPES is 1111 E Mcdowell Rd, Phoenix, AZ 85006-2612.
- What is Justin Lo's phone number?
- The practice phone number listed in the NPPES registry for Justin Lo is (480) 500-2540.
- Does Justin Lo accept Medicare?
- Justin Lo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Lo's NPI active?
- Yes — Justin Lo's NPI (1740667526) is active in the NPPES registry as of the last update on 2022-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.