Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Vivian Emily Saper, M.D.

Pediatric Rheumatology Physician in Palo Alto, CA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1942359310

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Registry record

Entity type Individual (Type 1)

Name Vivian Emily Saper

Credential M.D.

Sex Female

Practice address 730 Welch Rd, Palo Alto, CA, 94304

Phone (650) 723-5227

Enumeration date Jan 8, 2007

Last updated in NPPES Oct 23, 2012

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License G43328 (CA) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License G43328 (CA) Secondary

2080P0201X Pediatric Allergy/Immunology Physician Allopathic & Osteopathic Physicians · License G43328 (CA) Secondary

2080P0216X Pediatric Rheumatology Physician Allopathic & Osteopathic Physicians · License G43328 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Vivian Saper's NPI record?

Cross-check NPI 1942359310 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1942359310 active?

Yes, as of the latest NPPES snapshot, NPI 1942359310 is active (record last updated 2012-10-23).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-23.