NPI Portal NPI Lookup & Verification

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

Guihua Cao, M.D.

Anatomic Pathology & Clinical Pathology Physician in Saint Louis, MO · enumerated 2005.

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

National Provider Identifier

1821071978

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Registry record

Entity type Individual (Type 1)
Name Guihua Cao
Credential M.D.
Sex Male
Practice address Saint Louis, MO, 63117
Phone (314) 768-8202
Fax (314) 768-7145
Enumeration date Nov 22, 2005
Last updated in NPPES Oct 29, 2020

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

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 2002021161 (MO) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
1100694 Other MO UNITED HEALTH CARE
H72159 Other MO MERCY
115261 Other MO BCBS
208341313 Medicaid MO -
220033561 Other MO TRAVELERS
042938 Other MO HEALTH ALLIANCE
29381 Other MO GHP
373987 Other MO HEALTHLINK

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

What is the NPI number for Guihua Cao?
The National Provider Identifier (NPI) for Guihua Cao is 1821071978, a Type 1 (individual) record in the CMS NPPES registry.
Where does Guihua Cao practice?
The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-29.