What is Siew Tso's NPI number?

Siew Tso's National Provider Identifier (NPI) is 1043315104, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Siew Tso's specialty?

Siew Tso is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Siew Tso located?

Siew Tso's practice location on file with NPPES is 728 Pacific Ave, San Francisco, CA 94133-4457.

What is Siew Tso's phone number?

The practice phone number listed in the NPPES registry for Siew Tso is (415) 398-6728.

Is Siew Tso's NPI active?

Yes — Siew Tso's NPI (1043315104) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Siew Tso, M.D.

NPI 1043315104 · Family Medicine Physician · San Francisco, CA

Siew Tso, M.D. is a Family Medicine Physician provider in San Francisco, CA (NPI 1043315104).

Provider details

NPI number: 1043315104
Entity type: Individual
Primary specialty: Family Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: A35108 (CA)

Specialties & taxonomies

Family Medicine PhysicianPrimary207Q00000XLicense A35108 (CA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

728 Pacific Ave

Suite 507

San Francisco, CA 94133-4457

Phone: (415) 398-6728

Fax: (415) 398-6783

Street-level locationGet directions

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Mailing address