NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Kathryn L Huyssoon, MD

Internal Medicine Physician in Gresham, OR · enumerated 2005 · practices at Mth Clinic PC.

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

National Provider Identifier

1023000387

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Kathryn L Huyssoon
Credential MD
Sex Female
Practice address 24988 Se Stark St, Ste 300, Gresham, OR, 97030
Fax (503) 674-6709
Enumeration date Aug 22, 2005
Last updated in NPPES Dec 19, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD17970 (OR) 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
080697 Medicaid OR -

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 Kathryn Huyssoon practice?
The practice location on file with NPPES is in Gresham, OR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Kathryn Huyssoon?
The National Provider Identifier (NPI) for Kathryn Huyssoon is 1023000387, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-19.