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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MR. ROMULO DE CASTRO SANTOS JR.
NPI 1376451872
Internal Medicine - Hematology & Oncology in Colma, CA

Active since August 28, 2026
7800 EL CAMINO REAL APT 1125, COLMA, CA 94014(415) 850-2536 Get Directions Write a Review

NPPES record added: August 28, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Mr. Romulo De Castro Santos Jr. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. ROMULO DE CASTRO SANTOS JR. (NPI 1376451872) is an individual hematology & oncology provider in Colma, California, licensed in California (95422701) and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1376451872
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameMR. ROMULO DE CASTRO SANTOS JR.
Location Address7800 EL CAMINO REAL APT 1125Colma, CA 94014-3178
Mailing Address7800 El Camino Real Apt 1125Colma, CA 94014-3178
Phone(415) 850-2536
Sole ProprietorYes
Enumeration DateAugust 28, 2026
NPPES CertifiedAugust 28, 2026
✔ NPI 1376451872 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · 95422701
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
7800 EL CAMINO REAL APT 1125, Colma, CA 94014
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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Romulo Santos's NPI number?

The NPI number for Romulo Santos is 1376451872. It was assigned to this individual provider in the NPPES registry on August 28, 2026.

Where is Romulo Santos located?

Romulo Santos practices at 7800 El Camino Real Apt 1125, Colma, CA 94014. The listed phone number is (415) 850-2536.

What is Romulo Santos's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

When was this NPI record last updated?

The NPPES record for Romulo Santos was last updated on August 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.