Justin Leach, DO
NPI 1124580527 · Emergency Medicine Physician · Stockton, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Leach, DO is a Emergency Medicine Physician provider in Stockton, CA (NPI 1124580527).
Provider details
- NPI number
- 1124580527
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A009672 (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
7 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
380 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 | 260 | $167 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 82 | $115 |
| Critical Care, First 30-74 Minutes99291 | 26 | $203 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 12 | $68 |
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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 49 | 49 |
| Ondansetronbrand: Ondansetron Odt | 47 | 47 |
| Cefdinir | 43 | 42 |
| Ibuprofen | 34 | 34 |
| Prednisone | 20 | 20 |
| Cephalexin | 19 | 18 |
| Famotidine | 17 | 17 |
| Doxycycline Monohydrate | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-03
- Last updated
- 2022-06-08
- Certified
- 2022-06-08
Frequently asked questions
- What is Justin Leach's NPI number?
- Justin Leach's National Provider Identifier (NPI) is 1124580527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Leach's specialty?
- Justin Leach is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Leach located?
- Justin Leach's practice location on file with NPPES is 1800 N California St, Stockton, CA 95204-6019.
- What is Justin Leach's phone number?
- The practice phone number listed in the NPPES registry for Justin Leach is (209) 547-7146.
- Does Justin Leach accept Medicare?
- Justin Leach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Leach's NPI active?
- Yes — Justin Leach's NPI (1124580527) is active in the NPPES registry as of the last update on 2022-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.