William Caceres, MD
Hematology & Oncology Physician · San Juan, PR
William Caceres, MD is a hematology & oncology physician with a practice address in San Juan, Puerto Rico, and NPI 1518910801, issued on May 18, 2006. Check the license (Puerto Rico 11027, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Caceres
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 11027 PR
Self-reported in NPPES; status is on the state search - Practice location
- VA Caribbean Healthcare System, San Juan, PR 00921
- Phone
- (787) 641-3693
- Enumerated
- May 18, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (787) 641-4568
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 134 in Puerto Rico → Look up another NPI →
Also registered at VA Caribbean Healthcare System
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Caceres 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 11027Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $252.93
7 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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.
William Caceres among 134 hematology & oncology physician records in Puerto Rico
William Caceres, MD 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 51% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2007 · 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 San Juan → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Natalia Almodovar Arbelo, MDSan Juan, PR 009211114381902
- Norma Arroyo, M.D.San Juan, PR 009211750391454
- Elizabeth Calderon-Alicea, MDSan Juan, PR 009211285883520
- Miguel Colon Donate, MDSan Juan, PR 009211609262781
- Armando Garcia, M.D.San Juan, PR 009211346347515
- Awilda Maldonado-Mercado, MDSan Juan, PR 009211316930431
- Natalia Mestres FrancoSan Juan, PR 009211013416056
- Dalianie Nieves, MDSan Juan, PR 009211073044517
Common questions
What is William Caceres, MD's NPI number?
William Caceres, MD's National Provider Identifier (NPI) is 1518910801, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Caceres, MD located?
The NPPES record lists a practice address at VA Caribbean Healthcare System, San Juan, PR, 00921. Phone: (787) 641-3693. Providers update this record themselves, so call before visiting.
How can I verify William Caceres, MD's license?
NPPES lists Puerto Rico license number 11027, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity 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.