NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melissa Tiyouh, M.D.

Infectious Disease Physician in Chambersburg, PA · enumerated 2014.

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

National Provider Identifier

1265846679

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Melissa Tiyouh
Credential M.D.
Sex Female
Practice address 111 Chambers Hill Dr Ste 102, Chambersburg, PA, 17201
Phone (177) 097-9097
Fax (717) 709-7984
Enumeration date Jun 13, 2014
Last updated in NPPES Apr 23, 2025

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License MD466393 (PA) 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

Is NPI 1265846679 active?
Yes, as of the latest NPPES snapshot, NPI 1265846679 is active (record last updated 2025-04-23).
How do I verify Melissa Tiyouh's NPI record?
Cross-check NPI 1265846679 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 2025-04-23.