Eileen I. Pacheco - Hernandez, MD
Hematology & Oncology Physician · Rio Piedras, PR
Eileen I. Pacheco - Hernandez, MD is a hematology & oncology physician with a practice address in Rio Piedras, Puerto Rico, and NPI 1831107317, issued on Aug 3, 2006. Check the license (Puerto Rico 6439, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Eileen I. Pacheco - Hernandez
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 6439 PR
Self-reported in NPPES; status is on the state search - Practice location
- Hematologia Y Oncologia Rcm, Rio Piedras, PR 00935
- Phone
- (787) 754-0101
- Enumerated
- Aug 3, 2006
- Record last updated
- Nov 8, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (787) 756-5866
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 134 in Puerto Rico → Look up another NPI →
Verify Eileen I. Pacheco - Hernandez 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 6439Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
65 Medicare Part D claims for 25 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 65% of 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: $16.95
1 payment: food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. 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.
Eileen I. Pacheco - Hernandez among 134 hematology & oncology physician records in Puerto Rico
Eileen I. Pacheco - Hernandez, 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 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 Rio Piedras → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Jose Abreu Arbelo, MDSan Juan, PR 009351851656441
- Noridza Rivera-RodriguezSan Juan, PR 009351023210200
- Maribel Tirado-Gomez, MDSan Juan, PR 009351659303527
- Margarita Bruno-Padilla, M.D.Hato Rey, PR 009361639119357
- Ernie Diaz Rivera, MDSan Juan, PR 009361992330831
- Omayra Gonzalez, MDSan Juan, PR 009361053304279
- Jose Lopez-PueblaSan Juan, PR 009361659828473
- Luis Baez Vallecillo, MDSan Juan, PR 009271265788855
Common questions
What is Eileen I. Pacheco - Hernandez, MD's NPI number?
Eileen I. Pacheco - Hernandez, MD's National Provider Identifier (NPI) is 1831107317, issued on Aug 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Eileen I. Pacheco - Hernandez, MD located?
The NPPES record lists a practice address at Hematologia Y Oncologia Rcm, Rio Piedras, PR, 00935. Phone: (787) 754-0101. Providers update this record themselves, so call before visiting.
How can I verify Eileen I. Pacheco - Hernandez, MD's license?
NPPES lists Puerto Rico license number 6439, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Eileen I. Pacheco - Hernandez, MD prescribe under Medicare Part D?
In 2024, Eileen I. Pacheco - Hernandez, MD had 65 Medicare Part D claims for 25 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.