Alan Diaz, M.D.
Internal Medicine Physician · Bronx, NY
Alan Diaz, M.D. is an internal medicine physician with a practice address in Bronx, New York, and NPI 1104936335, issued on Aug 30, 2006. Check the license (New York 188017, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Alan Diaz
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 188017 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2494 Williamsbridge RD, Bronx, NY 10469
- Phone
- (718) 652-1802
- Enumerated
- Aug 30, 2006
- Record last updated
- Jan 2, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (718) 652-1889
- Medicaid ID
- 01725548 NY
- Medicare enrollment
- Enrolled (PECOS I20041018000768); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 1990
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 2494 Williamsbridge RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Realba Rodriguez Iglesias, M.DInternal Medicine Physician1780978213
- Arvi Marie VillanuevaPhysical Therapist1376753483
Verify Alan Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 188017Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
6,996 Medicare Part D claims for 405 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 189 claims were for opioids.
Most prescribed
- Albuterol Sulfate Hfa332 claims
- Atorvastatin Calcium306 claims
- Omeprazole195 claims
- Vitamin D2183 claims
- Zolpidem Tartrate177 claims
- Losartan Potassium165 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $819.73
30 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Salud Medical PCBronx, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alan Diaz among 12,067 internal medicine physician records in New York
Alan Diaz, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1990 · median 2002 among the 7,221 with a school on file
- Record last updated2010 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
960 internal medicine physician records list a practice address in Bronx
They are 960 of the 32,017 NPPES records with a practice address in Bronx, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Bronx → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Yvonne Ablorh-Odjidja, M.D.Bronx, NY 104691568405504
- Reynaldo Alonso, MDBronx, NY 104691295735553
- Marcello Dibona, MDBronx, NY 104691427056761
- Eduardo Espinosa, MDBronx, NY 104691598721482
- John Fernandez, M.D.Bronx, NY 104691770518920
- Howard Hochster, MDBronx, NY 104691497768808
- James Maffucci, M.D.Bronx, NY 104691548244585
- Marcia Morgan, MDBronx, NY 104691043210230
Common questions
What is Alan Diaz, M.D.'s NPI number?
Alan Diaz, M.D.'s National Provider Identifier (NPI) is 1104936335, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alan Diaz, M.D. located?
The NPPES record lists a practice address at 2494 Williamsbridge RD, Bronx, NY, 10469. Phone: (718) 652-1802. Providers update this record themselves, so call before visiting.
How can I verify Alan Diaz, M.D.'s license?
NPPES lists New York license number 188017, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alan Diaz, M.D. prescribe under Medicare Part D?
In 2024, Alan Diaz, M.D. had 6,996 Medicare Part D claims for 405 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.