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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 30 days.

TAMESIS MEDICAL CORPORATION
NPI 1265354336
Internal Medicine in Roseville, CA

Active since July 29, 2026
151 N SUNRISE AVE STE 1103, ROSEVILLE, CA 95661(562) 640-2300 Get Directions Write a Review

NPPES record added: July 29, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Tamesis Medical Corporation NPPES

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

TAMESIS MEDICAL CORPORATION (NPI 1265354336) is a healthcare organization registered as an internal medicine in Roseville, California and active in the NPI registry since July 2026. The organization lists James Tamesis, Ceo, as its authorized official.

NPPES Registry Identity

NPI1265354336
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameTAMESIS MEDICAL CORPORATION
Location Address151 N SUNRISE AVE STE 1103Roseville, CA 95661-2931
Mailing Address151 N Sunrise Ave Ste 1103Roseville, CA 95661-2931
Phone(562) 640-2300
Organization SubpartNo
Authorized OfficialJames TamesisCeo · (562) 640-2300
Enumeration DateJuly 29, 2026
NPPES CertifiedJuly 29, 2026
✔ NPI 1265354336 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.
151 N SUNRISE AVE STE 1103, Roseville, CA 95661
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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

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 Tamesis Medical Corporation's NPI number?

The NPI number for Tamesis Medical Corporation is 1265354336. It was assigned to this organization in the NPPES registry on July 29, 2026.

Where is Tamesis Medical Corporation located?

Tamesis Medical Corporation is located at 151 N Sunrise Ave Ste 1103, Roseville, CA 95661. The listed phone number is (562) 640-2300.

What is Tamesis Medical Corporation'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 Tamesis Medical Corporation was last updated on July 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.