NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marissa Lynn Saengsamran, APRN, BC

Gerontology Nurse Practitioner in Saint Louis, MO · enumerated 2006 · practices at Clayton Dermatology LLC.

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

National Provider Identifier

1609931963

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Marissa Lynn Saengsamran
Credential APRN, BC
Sex Female
Practice address 816 S Kirkwood Rd Ste 210, Saint Louis, MO, 63122
Fax (314) 645-5907
Enumeration date Dec 27, 2006
Last updated in NPPES Dec 30, 2021

Taxonomy & licenses

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2001015646 (MO) Primary
APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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 Marissa Saengsamran practice?
The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marissa Saengsamran?
The National Provider Identifier (NPI) for Marissa Saengsamran is 1609931963, 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 2021-12-30.