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

Isabel Cristina Vallecillo-Viejo, MD, PHD

Individual provider Pediatric Allergy/Immunology Physician · NPI 1982133930

Isabel Cristina Vallecillo-Viejo, MD, PHD is a Pediatric Allergy/Immunology Physician in Bethesda, Maryland. Licensed in District of Columbia. Registered with an NPI since 2017.

Licensed in
DC
In the registry since
2017
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Partly verified

Some contact details are missing from the federal record.

National Institutes Of Health 9000 Rockville Pike 10 Center Dr
Bethesda, MD 20892
Phone: (301) 761-7685
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Allergy/Immunology Physician (primary) Taxonomy 2080P0201X · Licence MD210011543 (DC)

Record details

NPI number1982133930
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 5, 2017
Last updated in NPPESJune 15, 2023
Certification dateMarch 27, 2021

Other providers in Bethesda