Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Stephanie Rae Byrne, MD, MPH, MBA

Pediatrics Physician in Alamo, CA · enumerated 2019.

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

National Provider Identifier

1821550609

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Registry record

Entity type Individual (Type 1)

Name Stephanie Rae Byrne

Credential MD, MPH, MBA

Sex Female

Practice address Alamo, CA, 94507

Phone (925) 838-7337

Enumeration date Apr 2, 2019

Last updated in NPPES Aug 18, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD485561 (PA) Secondary

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

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A177273 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Stephanie Byrne practice?

The practice location on file with NPPES is in Alamo, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Stephanie Byrne?

The National Provider Identifier (NPI) for Stephanie Byrne is 1821550609, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-18.