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

Dr. Guillermo Alfred Balfour, MD

Individual provider Pediatrics Physician · NPI 1366412520

Dr. Guillermo Alfred Balfour, MD is a Pediatrics Physician in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2006.

Licensed in
DC
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 checks out

3301 New Mexico Ave NW Ste 238
Washington, DC 20016
Phone: (202) 537-1180
Fax: (202) 244-7410
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence MD3823 (DC)

Record details

NPI number1366412520
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 23, 2006
Last updated in NPPESJuly 13, 2026

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