Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Ignacio Alberto Portales Castillo, MD

Individual provider Internal Medicine Physician · NPI 1740631183

Dr. Ignacio Alberto Portales Castillo, MD is a Nephrology in Saint Louis, Missouri. Qualified in 2016, 10 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
10
Licensed in
MO
In the registry since
2016
Specialties on file
2
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

1 Barnes Jewish Hospital Plz Div Im Nephrology
Saint Louis, MO 63110-1003
Phone: (314) 362-7603
Fax: (314) 747-5213
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 2021040899 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2021040899 (MO)

Record details

NPI number1740631183
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 27, 2016
Last updated in NPPESApril 17, 2025
Certification dateAugust 2, 2022

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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