Alan Diaz, M.D.
NPI 1104936335 · Internal Medicine Physician · Bronx, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Diaz, M.D. is a Internal Medicine Physician provider in Bronx, NY (NPI 1104936335).
Provider details
- NPI number
- 1104936335
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 188017 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
174 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $146 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 24 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 22 | $147 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 21 | $9 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 21 | $22 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 115 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 332 | 69 |
| Atorvastatin Calcium | 306 | 108 |
| Omeprazole | 195 | 63 |
| Ergocalciferol (vitamin D2)brand: Vitamin D2 | 183 | 87 |
| Zolpidem Tartrate | 177 | 35 |
| Losartan Potassium | 165 | 63 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$820 across 30 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
- 2006-08-30
- Last updated
- 2010-01-02
Frequently asked questions
- What is Alan Diaz's NPI number?
- Alan Diaz's National Provider Identifier (NPI) is 1104936335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Diaz's specialty?
- Alan Diaz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Diaz located?
- Alan Diaz's practice location on file with NPPES is 2494 Williamsbridge Rd, Bronx, NY 10469-4806.
- What is Alan Diaz's phone number?
- The practice phone number listed in the NPPES registry for Alan Diaz is (718) 652-1802.
- Does Alan Diaz accept Medicare?
- Alan Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Diaz's NPI active?
- Yes — Alan Diaz's NPI (1104936335) is active in the NPPES registry as of the last update on 2010-01-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.