Vivian B. Diaz Melendez, M.D
Hematology & Oncology Physician · Humacao, PR
Vivian B. Diaz Melendez, M.D is a hematology & oncology physician with a practice address in Humacao, Puerto Rico, and NPI 1265633135, issued on May 30, 2007. Check the license (Puerto Rico 16706, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Vivian B. Diaz Melendez
- Credential
- M.D
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 16706 PR
Self-reported in NPPES; status is on the state search - Practice location
- #3 Calle Font Martelo, Humacao, PR 00791
- Phone
- (787) 960-3314
- Enumerated
- May 30, 2007
- Record last updated
- Aug 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110929000525); accepts Medicare assignment
- Medical or professional school
- University Central Del Caribe Escuela De Medicina, 2004
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 134 in Puerto Rico → Look up another NPI →
Verify Vivian B. Diaz Melendez 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 16706Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,146 Medicare Part D claims for 209 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Anastrozole467 claims
- Tamoxifen Citrate299 claims
- Alendronate Sodium199 claims
- Famotidine112 claims
- Letrozole96 claims
- Dexamethasone83 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: $594.97
27 payments; by number, the most common kind was food and beverage; the largest payer was Eli Lilly Export S.A. Puerto Rico Branch. The 8,560 providers of this specialty with any payment received $7,481.41 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.
Vivian B. Diaz Melendez among 134 hematology & oncology physician records in Puerto Rico
Vivian B. Diaz Melendez, M.D is one of 134 hematology & oncology physician records with a practice address in Puerto Rico. 91% 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 49% of them.
- NPI issued2007 · 49% of these records are older, 36% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2004 · median 2001 among the 98 with a school on file
- Record last updated2011 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Puerto Rico
There are 134 hematology & oncology physician records in Puerto Rico.
All 134 in Puerto Rico → Every provider in Humacao → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ivan Aponte-Aponte, M.D.Humacao, PR 007911427139013
- Ivelisse Irizarry, M.D.Humacao, PR 007911700884566
- Joel Lopez-FigueroaHumacao, PR 007911811271463
- Graciany Miranda, MD.Humacao, PR 007911386639995
- Alma Rivera, M.D.Humacao, PR 007911902919830
- Deana Hallman, M.D.Humacao, PR 007921780697094
- Nelson Matos-Fernandez, MDSanta Isabel, PR 007971124214903
- Samuel Gonzalez, MDGuayama, PR 007841861474223
Common questions
What is Vivian B. Diaz Melendez, M.D's NPI number?
Vivian B. Diaz Melendez, M.D's National Provider Identifier (NPI) is 1265633135, issued on May 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Vivian B. Diaz Melendez, M.D located?
The NPPES record lists a practice address at #3 Calle Font Martelo, Humacao, PR, 00791. Phone: (787) 960-3314. Providers update this record themselves, so call before visiting.
How can I verify Vivian B. Diaz Melendez, M.D's license?
NPPES lists Puerto Rico license number 16706, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Vivian B. Diaz Melendez, M.D prescribe under Medicare Part D?
In 2024, Vivian B. Diaz Melendez, M.D had 2,146 Medicare Part D claims for 209 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.