NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Marilyn Mason Mcmillen MD Psc

Anatomic Pathology & Clinical Pathology Physician in Somerset, KY · enumerated 2006 · authorized official Marilyn Mcmillen, President.

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

National Provider Identifier

1386605798

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Marilyn Mason Mcmillen MD Psc
Practice address 305 Langdon St, Somerset, KY, 42501
Fax (606) 679-5238
Enumeration date Mar 28, 2006
Last updated in NPPES May 8, 2013

Taxonomy & classification

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Marilyn Mcmillen
Title President

Other identifiers

Identifier Type State Issuer
65928145 Medicaid KY -
220031591 Other KY MEDICARE RAILROAD

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 Marilyn Mason Mcmillen MD Psc?
The NPI for Marilyn Mason Mcmillen MD Psc is 1386605798, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Marilyn Mason Mcmillen MD Psc?
NPPES lists Marilyn Mcmillen (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-08.