Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Monika Marie Sullivan, DO

Pediatric Nephrology Physician in Palo Alto, CA · enumerated 2020.

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

National Provider Identifier

1083243919

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Registry record

Entity type Individual (Type 1)

Name Monika Marie Sullivan

Credential DO

Sex Female

Practice address 453 Quarry Rd, Palo Alto, CA, 94304

Phone (415) 529-0255

Enumeration date Apr 3, 2020

Last updated in NPPES May 24, 2023

Taxonomy & licenses

2080P0210X Pediatric Nephrology Physician Allopathic & Osteopathic Physicians · License 20A20873 (CA) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1083243919 active?

Yes, as of the latest NPPES snapshot, NPI 1083243919 is active (record last updated 2023-05-24).

How do I verify Monika Sullivan's NPI record?

Cross-check NPI 1083243919 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-24.