Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Lourdes Marrero Diaz, MD

Individual provider General Practice Physician · NPI 1205800216

Dr. Lourdes Marrero Diaz, MD is registered under General Practice in Trujillo Alto, Puerto Rico. Qualified in 2003, 23 years ago. Practices with Hospital Espanol Auxilio Mutuo De Puerto Rico, Inc, a 54-clinician group and accepts Medicare assignment. Licensed in Puerto Rico.

Years since qualifying
23
Licensed in
PR
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

305 Calle Cruz
Trujillo Alto, PR 00976-5941
Phone: (787) 293-2700
Fax: (787) 998-3685

No coordinates on file. Search this address in Google Maps

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence 16259 (PR)

Record details

NPI number1205800216
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 15, 2006
Last updated in NPPESAugust 23, 2021
Certification dateAugust 4, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL PRACTICE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Hospital Espanol Auxilio Mutuo De Puerto Rico, Inc. — 54 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of tissue 360 times · 95th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients31
Services billed 371 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $189 4 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $22 1 payment · travel or lodging paid or reimbursed, such as to attend a conference

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Auxilio Mutuo Hospital Hospital · San Juan, PR

Colleagues at Hospital Espanol Auxilio Mutuo De Puerto Rico, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 54 clinicians in the practice; 12 are shown here.

Other providers in Trujillo Alto