NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Xiaoyue Mona Guo, MD

Gynecologic Oncology Physician in Los Angeles, CA · enumerated 2016.

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

National Provider Identifier

1477915601

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Xiaoyue Mona Guo
Credential MD
Sex Female
Practice address 1516 San Pablo St Fl 3, Los Angeles, CA, 90033
Phone (323) 276-3705
Fax (323) 865-0062
Enumeration date Mar 26, 2016
Last updated in NPPES Nov 16, 2023

Taxonomy & licenses

207VX0201X Gynecologic Oncology Physician Allopathic & Osteopathic Physicians · License A167916 (CA) Primary
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License A167916 (CA) Secondary
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

Is NPI 1477915601 active?
Yes, as of the latest NPPES snapshot, NPI 1477915601 is active (record last updated 2023-11-16).
How do I verify Xiaoyue Guo's NPI record?
Cross-check NPI 1477915601 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-16.