Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Guillermo Villarmarzo-Garcia, MD

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1518928738

Dr. Guillermo Villarmarzo-Garcia, MD practises Pathology in San Juan, Puerto Rico. Qualified in 1974, 52 years ago. Practices with Hato Rey Pathology Associates Inc, a 21-clinician group and accepts Medicare assignment. Licensed in Puerto Rico.

Years since qualifying
52
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.

300 Ave Manuel Domenech Hrplabs
San Juan, PR 00918-3509
Phone: (787) 765-7320
Fax: (787) 753-7656

No coordinates on file. Search this address in Google Maps

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence 4780 (PR)

Record details

NPI number1518928738
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 29, 2006
Last updated in NPPESJanuary 29, 2020
Certification dateJanuary 29, 2020

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolOTHER
Graduated 1974 (52 years in practice)
Group practice Hato Rey Pathology Associates Inc — 21 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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 patients75
Services billed 404 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Hato Rey Pathology Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 21 clinicians in the practice; 12 are shown here.

Other providers in San Juan