NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark R Druffner, MD

Family Medicine Physician in Amery, WI · enumerated 2006.

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

National Provider Identifier

1154392447

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Mark R Druffner
Credential MD
Sex Male
Practice address 265 Griffin St E, Amery, WI, 54001
Enumeration date Jan 27, 2006
Last updated in NPPES May 10, 2019

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 36268 (MN) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 39223 (WI) 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
32406100 Medicaid WI -

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 Mark Druffner practice?
The practice location on file with NPPES is in Amery, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Druffner?
The National Provider Identifier (NPI) for Mark Druffner is 1154392447, 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 2019-05-10.