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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

COLLEEN HAMILTON MD
NPI 1083302939
Internal Medicine in Torrance, CA

Active since April 28, 2023
1000 W CARSON ST, TORRANCE, CA 90502(310) 222-2345 Get Directions Write a Review

NPPES record last updated: June 22, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Colleen Hamilton Md NPPES

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

COLLEEN HAMILTON MD (NPI 1083302939) is an individual internal medicine provider in Torrance, California, licensed in California (A209906) and active in the NPI registry since April 2023.

NPPES Registry Identity

NPI1083302939
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameCOLLEEN HAMILTONCredential: MD
Location Address1000 W CARSON STTorrance, CA 90502-2004
Mailing Address1845 White Oak DrMenlo Park, CA 94025-6130 · (650) 387-0096
Phone(310) 222-2345
Sole ProprietorYes
Enumeration DateApril 28, 2023
Last NPPES UpdateJune 22, 2026
NPPES CertifiedJune 22, 2026
✔ NPI 1083302939 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A209906
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.
1000 W CARSON ST, Torrance, CA 90502
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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 20

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

MISS BRITTANY IRVINE M.A.
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
DEPAREMENT OF MANTAL HEALTH
Case Management
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-1648
DINA M MEZA
Nurse Practitioner (Family)
1000 W CARSON ST, HEAD AND NECK BOX 6
TORRANCE, CA 90502
Los Angeles County (310) 222-2741
MARIA GUADALUPE VALADEZ
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (559) 789-1327
ESTEBAN COTA
Specialist
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
MS. DAWN MARIE TLUSTY RN
Registered Nurse (Infusion Therapy)
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-1906
DR. NICOLE MOORE MD
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
KENTON YUJI SAKURAI
Psychiatry & Neurology (Psychiatry)
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (424) 306-4000

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 Colleen Hamilton's NPI number?

The NPI number for Colleen Hamilton is 1083302939. It was assigned to this individual provider in the NPPES registry on April 28, 2023.

Where is Colleen Hamilton located?

Colleen Hamilton practices at 1000 W Carson St, Torrance, CA 90502. The listed phone number is (310) 222-2345.

What is Colleen Hamilton'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 Colleen Hamilton was last updated on June 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 58 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.