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

Mr. Guillermo E Ulmos Sr., MD

Individual provider Surgery Physician · NPI 1144429416

Mr. Guillermo E Ulmos Sr., MD is a Surgery Physician in San Juan, Puerto Rico. Licensed in Puerto Rico. Registered with an NPI since 2007.

Licensed in
PR
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address may be wrong

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

4097 Street Emiliano Pol Ste 574
San Juan, PR 00926
Phone: (787) 760-1262

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 4242 (PR)

Record details

NPI number1144429416
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 16, 2007
Last updated in NPPESJuly 16, 2007

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