Jose Diaz, M.D.
NPI 1306880836 · Emergency Medicine Physician · Chino, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jose Diaz, M.D. is a Emergency Medicine Physician provider in Chino, CA (NPI 1306880836).
Provider details
- NPI number
- 1306880836
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A64744 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
270 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 Moderate Level of Medical Decision Making99284 | 83 | $120 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 81 | $174 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 50 | $8 |
| Critical Care, First 30-74 Minutes99291 | 35 | $213 |
| X-Ray of Chest, 1 View71045 | 21 | $9 |
Typical Medicare-allowed amounts for these services range $8–$213 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tramadol Hcl | 67 | 67 |
| Prednisone | 34 | 32 |
| Naproxen | 31 | 30 |
| Cephalexin | 20 | 20 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 17 | 17 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 16 | 16 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim |
Practice location
Mailing address
Additional practice locations (1)
- 7720 Rancho Santa Fe Rd#225Carlsbad, CA 92009Phone: (626) 524-3865
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2022-11-16
- Certified
- 2022-11-09
Frequently asked questions
- What is Jose Diaz's NPI number?
- Jose Diaz's National Provider Identifier (NPI) is 1306880836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jose Diaz's specialty?
- Jose Diaz is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jose Diaz located?
- Jose Diaz's practice location on file with NPPES is 5451 Walnut Ave, Chino, CA 91710-2609.
- What is Jose Diaz's phone number?
- The practice phone number listed in the NPPES registry for Jose Diaz is (909) 464-8667.
- Does Jose Diaz accept Medicare?
- Jose Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jose Diaz's NPI active?
- Yes — Jose Diaz's NPI (1306880836) is active in the NPPES registry as of the last update on 2022-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.