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

DR. FEN TITTY SAJ MD, DM
NPI 1558265140
Internal Medicine - Medical Oncology in Redwood City, CA

Q: What is Fen Saj's NPI number?

The NPI number for Fen Saj is 1558265140. It was assigned to this individual provider in the NPPES registry on October 6, 2026.

Q: What is Fen Saj's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Q: When was this NPI record last updated?

The NPPES record for Fen Saj was last updated on October 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 October 06, 2026

440 BROADWAY ST, REDWOOD CITY, CA 94063(650) 498-6000(650) 368-0254 Get Directions Write a Review

NPPES record added: October 6, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

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About Dr. Fen Titty Saj Md, Dm NPPES

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

DR. FEN TITTY SAJ MD, DM (NPI 1558265140) is an individual medical oncology provider in Redwood City, California, licensed in California (SPI999) and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1558265140

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameDR. FEN TITTY SAJCredential: MD, DM

Location Address440 BROADWAY STRedwood City, CA 94063-3123

Mailing Address7010 Staffordshire BlvdHouston, TX 77030-4129

Phone(650) 498-6000

Fax(650) 368-0254

Sole ProprietorNo

Enumeration DateOctober 6, 2026

NPPES CertifiedOctober 6, 2026

✔ NPI 1558265140 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in CA · SPI999

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

440 BROADWAY ST, Redwood City, CA 94063

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Other Providers at the Same Location NPPES

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

DR. WAN-LING WU DNP, FNP-C, CWCN

Nurse Practitioner (Family)

440 BROADWAY ST
REDWOOD CITY, CA 94063

San Mateo County (650) 721-8800

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 Fen Saj's NPI number?

The NPI number for Fen Saj is 1558265140. It was assigned to this individual provider in the NPPES registry on October 6, 2026.

Where is Fen Saj located?

Fen Saj practices at 440 Broadway St, Redwood City, CA 94063. The listed phone number is (650) 498-6000.

What is Fen Saj's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

When was this NPI record last updated?

The NPPES record for Fen Saj was last updated on October 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.