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

RATNASOTHY S RAJAH MD
NPI 1619932779
Internal Medicine in San Leandro, CA

Q: What is Ratnasothy Rajah's NPI number?

The NPI number for Ratnasothy Rajah is 1619932779. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Q: What is Ratnasothy Rajah's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Ratnasothy Rajah was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 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.

Active since April 19, 2006

13847 E 14TH ST, #112, SAN LEANDRO, CA 94578(510) 895-9721(510) 895-5283 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Ratnasothy S Rajah Md NPPES

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

RATNASOTHY S RAJAH MD (NPI 1619932779) is an individual internal medicine provider in San Leandro, California, licensed in California (A29661) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1619932779

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameRATNASOTHY S RAJAHCredential: MD

Location Address13847 E 14TH ST, #112San Leandro, CA 94578

Mailing Address13847 E 14th St, #112San Leandro, CA 94578 · (510) 895-9721 · Fax (510) 895-5283

Phone(510) 895-9721

Fax(510) 895-5283

Sole ProprietorNo

Enumeration DateApril 19, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1619932779 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 · A29661

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.

13847 E 14TH ST, San Leandro, CA 94578

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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.

JEFFREY SILVERS M.D.

Internal Medicine (Infectious Disease)

13847 E 14TH ST, SUITE 116
SAN LEANDRO, CA 94578

Alameda County (510) 895-0388

NAMRATA PATYAL

Internal Medicine

13847 E 14TH ST, STE 101
SAN LEANDRO, CA 94578

Alameda County (510) 351-6424

DR. JANE HELEN WARDZINSKA M.D.

Family Medicine

13847 E 14TH ST, SUITE 110
SAN LEANDRO, CA 94578

Alameda County (510) 895-8700

DR. OSTAP G MELNYK MD

Internal Medicine (Hematology & Oncology)

13847 E 14TH ST, SUITE 217
SAN LEANDRO, CA 94578

Alameda County (510) 483-2555

BRIAN WALKER MD

Surgery

13847 E 14TH ST, SUITE 118
SAN LEANDRO, CA 94578

Alameda County (510) 352-8400

DR. CLARENCE A. BOYD JR. M.D.

Orthopaedic Surgery

13847 E 14TH ST, SUITE 106
SAN LEANDRO, CA 94578

Alameda County (510) 483-3191

MEDICAL ARTS PHARMACY LLC

Pharmacy

13847 E 14TH ST, SUITE 103
SAN LEANDRO, CA 94578

Alameda County (510) 357-1881

ASIAN COMMUNITY MENTAL HEALTH BOARD

Community/Behavioral Health

13847 E 14TH ST, SUITE 116
SAN LEANDRO, CA 94578

Alameda County (510) 869-6000

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 Ratnasothy Rajah's NPI number?

The NPI number for Ratnasothy Rajah is 1619932779. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Where is Ratnasothy Rajah located?

Ratnasothy Rajah practices at 13847 E 14th St #112, San Leandro, CA 94578. The listed phone number is (510) 895-9721.

What is Ratnasothy Rajah'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 Ratnasothy Rajah was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 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.