Ricardo Diaz, MD
NPI 1427017540 · Internal Medicine Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ricardo Diaz, MD is a Internal Medicine Physician provider in Dallas, TX (NPI 1427017540).
Provider details
- NPI number
- 1427017540
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- J0474 (TX)
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
27 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 15 | $89 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 12 | $126 |
Typical Medicare-allowed amounts for these services range $89–$126 (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 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 224 | 86 |
| Lisinopril | 223 | 76 |
| Levothyroxine Sodium | 190 | 60 |
| Metformin Hcl | 186 | 60 |
| Amlodipine Besylate | 180 | 64 |
| Pravastatin Sodium | 114 | 41 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ricardo Diaz's NPI number?
- Ricardo Diaz's National Provider Identifier (NPI) is 1427017540, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ricardo Diaz's specialty?
- Ricardo Diaz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ricardo Diaz located?
- Ricardo Diaz's practice location on file with NPPES is 5959 Harry Hines Blvd Ste 108, Dallas, TX 75235.
- What is Ricardo Diaz's phone number?
- The practice phone number listed in the NPPES registry for Ricardo Diaz is (214) 879-8920.
- Does Ricardo Diaz accept Medicare?
- Ricardo Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ricardo Diaz's NPI active?
- Yes — Ricardo Diaz's NPI (1427017540) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.