James Winn, D.O.
NPI 1336183730 · Emergency Medicine Physician · Chino, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Winn, D.O. is a Emergency Medicine Physician provider in Chino, CA (NPI 1336183730).
Provider details
- NPI number
- 1336183730
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A5927 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
365 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 | 164 | $173 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 80 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 72 | $119 |
| X-Ray of Chest, 1 View71045 | 37 | $8 |
| Critical Care, First 30-74 Minutes99291 | 12 | $211 |
Typical Medicare-allowed amounts for these services range $8–$211 (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 |
|---|---|---|
| Ibuprofen | 51 | 48 |
| Tramadol Hcl | 48 | 47 |
| Ondansetron Hcl | 31 | 30 |
| Prednisone | 26 | 26 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 19 | 19 |
| Levocetirizine Dihydrochloride | 16 | 16 |
| Azithromycin | 14 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2012-04-27
Frequently asked questions
- What is James Winn's NPI number?
- James Winn's National Provider Identifier (NPI) is 1336183730, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Winn's specialty?
- James Winn is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Winn located?
- James Winn's practice location on file with NPPES is 5451 Walnut Ave, Chino, CA 91710-2609.
- What is James Winn's phone number?
- The practice phone number listed in the NPPES registry for James Winn is (909) 464-8666.
- Does James Winn accept Medicare?
- James Winn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Winn's NPI active?
- Yes — James Winn's NPI (1336183730) is active in the NPPES registry as of the last update on 2012-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.