Antonio M. Diaz, MD
Specialist · Bayamon, PR
Antonio M. Diaz, MD is a specialist with a practice address in Bayamon, Puerto Rico, and NPI 1700920766, issued on Feb 16, 2007. Check the license (Puerto Rico 8186, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Antonio M. Diaz
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- 8186 PR
Self-reported in NPPES; status is on the state search - Practice location
- B24 Calle 25, Bayamon, PR 00959
- Phone
- (787) 780-9670
- Enumerated
- Feb 16, 2007
- Record last updated
- Apr 6, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (787) 785-2264
- Entity
- Type 1 · individual
8 nearest specialist records → All 574 in Puerto Rico → Look up another NPI →
Verify Antonio M. Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
Search for license 8186Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average specialist in 2024
52 Medicare Part D claims for 18 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin14 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.
Antonio M. Diaz among 574 specialist records in Puerto Rico
Antonio M. Diaz, MD is one of 574 specialist records with a practice address in Puerto Rico. 54% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 63% of them.
- NPI issued2007 · 63% of these records are older, 10% newer
- In a Medicare fileYes · 54% of these records are
- In the CMS Doctors and Clinicians fileNo · 26% of these records are
- Record last updated2014 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
55 specialist records list a practice address in Bayamon
They are 55 of the 2,958 NPPES records with a practice address in Bayamon, and 574 specialist records in Puerto Rico.
All 574 in Puerto Rico → Every provider in Bayamon → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Angel Arizmendi, M.D.Bayamon, PR 009591821291642
- Carlos Barreto, M.D.Bayamon, PR 009591407867138
- Elias Bou Gauthier, MDBayamon, PR 009591750342960
- Pilar Cabrera-Rodriguez, MDBayamon, PR 009591780663310
- Oscar Cardona, M.D.Bayamon, PR 009591194721258
- Jose Flaque, M.D.Bayamon, PR 009591841375375
- Rafael Gonzalez-Gpmzalez, M.D.Bayamon, PR 009591942276936
- Ignacio Jaca Montijo, M.D.Bayamon, PR 009591477650893
Common questions
What is Antonio M. Diaz, MD's NPI number?
Antonio M. Diaz, MD's National Provider Identifier (NPI) is 1700920766, issued on Feb 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Antonio M. Diaz, MD located?
The NPPES record lists a practice address at B24 Calle 25, Bayamon, PR, 00959. Phone: (787) 780-9670. Providers update this record themselves, so call before visiting.
How can I verify Antonio M. Diaz, MD's license?
NPPES lists Puerto Rico license number 8186, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Antonio M. Diaz, MD prescribe under Medicare Part D?
In 2024, Antonio M. Diaz, MD had 52 Medicare Part D claims for 18 beneficiaries; the average among specialist prescribers was 1,380. 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.