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SEAN S. TO, MD INC
NPI 1831708254
Internal Medicine in Chino, CA

Active since July 31, 2020
5562 PHILADELPHIA ST STE 201, CHINO, CA 91710(909) 988-1000(909) 988-1001 Get Directions Write a Review

NPPES record last updated: July 31, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Sean S. To, Md Inc NPPES

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

SEAN S. TO, MD INC (NPI 1831708254), doing business as Sean S. To, Md, is a healthcare organization registered as an internal medicine in Chino, California and active in the NPI registry since July 2020. The organization lists Sean To, President, as its authorized official.

NPPES Registry Identity

NPI1831708254
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSEAN S. TO, MD INC
Location Address5562 PHILADELPHIA ST STE 201Chino, CA 91710-2482
Mailing Address1317 S Diamond Bar Blvd Unit 4462Diamond Bar, CA 91765-5620 · (909) 573-2035
Phone(909) 988-1000
Fax(909) 988-1001
Organization SubpartNo
Authorized OfficialSean ToPresident · (626) 652-8871
Enumeration DateJuly 31, 2020
NPPES CertifiedJuly 31, 2020
✔ NPI 1831708254 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
5562 PHILADELPHIA ST STE 201, Chino, CA 91710
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Other Names 2

Former Legal Business NameSean S. To, Md
Former Legal Business NameSean S. To, Md Inc

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SEAN S. TO., M.D., INC
Internal Medicine
5562 PHILADELPHIA ST STE 201
CHINO, CA 91710
San Bernardino County (909) 988-1000
DR. SEAN S TO M.D.
Internal Medicine
5562 PHILADELPHIA ST STE 201
CHINO, CA 91710
San Bernardino County (909) 988-1000

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 Sean S. To, MD Inc's NPI number?

The NPI number for Sean S. To, MD Inc is 1831708254. It was assigned to this organization in the NPPES registry on July 31, 2020. The provider was formerly known as Sean S. TO, MD.

Where is Sean S. To, MD Inc located?

Sean S. To, MD Inc is located at 5562 Philadelphia St Ste 201, Chino, CA 91710. The listed phone number is (909) 988-1000.

What is Sean S. To, MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Sean S. To, MD Inc was last updated on July 31, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.