Marco Diaz, MD
NPI 1104015577 · Emergency Medicine Physician · El Paso, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marco Diaz, MD is a Emergency Medicine Physician provider in El Paso, TX (NPI 1104015577).
Provider details
- NPI number
- 1104015577
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- N0730 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
325 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 | 147 | $167 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 84 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 38 | $116 |
| Critical Care, First 30-74 Minutes99291 | 31 | $202 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 25 | $118 |
Typical Medicare-allowed amounts for these services range $8–$202 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 73 | 33 |
| Ibuprofen | 46 | 45 |
| Ondansetronbrand: Ondansetron Odt | 38 | 38 |
| Lisinopril | 32 | 17 |
| Dicyclomine Hcl | 29 | 20 |
| Metformin Hcl | 29 | 14 |
| Acetaminophen With Codeinebrand: Acetaminophen-Codeine | 25 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$193 across 11 records (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
Registry dates
- Enumerated
- 2007-10-22
- Last updated
- 2017-01-23
Frequently asked questions
- What is Marco Diaz's NPI number?
- Marco Diaz's National Provider Identifier (NPI) is 1104015577, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marco Diaz's specialty?
- Marco Diaz is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marco Diaz located?
- Marco Diaz's practice location on file with NPPES is 6283 Franklin Point Dr, El Paso, TX 79912-8180.
- What is Marco Diaz's phone number?
- The practice phone number listed in the NPPES registry for Marco Diaz is (915) 929-1069.
- Does Marco Diaz accept Medicare?
- Marco Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marco Diaz's NPI active?
- Yes — Marco Diaz's NPI (1104015577) is active in the NPPES registry as of the last update on 2017-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.