Eduardo J. Diaz, MD
Nephrology Physician · Rio Piedras, PR
Eduardo J. Diaz, MD is a nephrology physician with a practice address in Rio Piedras, Puerto Rico, and NPI 1942328596, issued on Mar 26, 2007. Check the license (Puerto Rico 13894, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Eduardo J. Diaz
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 13894 PR
Self-reported in NPPES; status is on the state search - Practice location
- Avenida Americo Miranda, Rio Piedras, PR 00924
- Phone
- (787) 754-8500
- Enumerated
- Mar 26, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120924000318); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 152 in Puerto Rico → Look up another NPI →
Verify Eduardo J. 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 13894Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average nephrology physician in 2024
17 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
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: $125.00
1 payment: food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 8,230 providers of this specialty with any payment received $3,091.37 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.
Eduardo J. Diaz among 152 nephrology physician records in Puerto Rico
Eduardo J. Diaz, MD is one of 152 nephrology physician records with a practice address in Puerto Rico. 92% 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 38% of them.
- NPI issued2007 · 38% of these records are older, 47% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated1995 · median 2004 among the 124 with a school on file
- Record last updated2007 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Puerto Rico
There are 152 nephrology physician records in Puerto Rico.
All 152 in Puerto Rico → Every provider in Rio Piedras → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Rafael Ramirez, M.D.San Juan, PR 009261417071929
- Jose Santiago-Santiago, MDSan Juan, PR 009261619071859
- Francisco Torre, MDSan Juan, PR 009261063577385
- Hector Cordova-Rivera, M.D.San Juan, PR 009211023060563
- Deniz Garcia-De La Rosa, MDRio Piedras, PR 009211811992712
- Ileana Ocasio Melendez, M.D.San Juan, PR 009211013140292
- Giuliani Oliveras MaldonadoSan Juan, PR 009211912560194
- Enrique Ortiz-Kidd, M.D.San Juan, PR 009271538289897
Common questions
What is Eduardo J. Diaz, MD's NPI number?
Eduardo J. Diaz, MD's National Provider Identifier (NPI) is 1942328596, issued on Mar 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Eduardo J. Diaz, MD located?
The NPPES record lists a practice address at Avenida Americo Miranda, Rio Piedras, PR, 00924. Phone: (787) 754-8500. Providers update this record themselves, so call before visiting.
How can I verify Eduardo J. Diaz, MD's license?
NPPES lists Puerto Rico license number 13894, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Eduardo J. Diaz, MD prescribe under Medicare Part D?
In 2024, Eduardo J. Diaz, MD had 17 Medicare Part D claims; the average among nephrology physician prescribers was 1,465. 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.