NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karl Frederick Welke, MD

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Charlotte, NC · enumerated 2006.

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

National Provider Identifier

1285649780

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Karl Frederick Welke
Credential MD
Sex Male
Practice address 1001 Blythe Blvd, Ste 500, Charlotte, NC, 28203
Enumeration date Jul 31, 2006
Last updated in NPPES Jul 15, 2024

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 2010-01908 (NC) Secondary
208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 2010-01908 (NC) 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

What is the NPI number for Karl Welke?
The National Provider Identifier (NPI) for Karl Welke is 1285649780, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karl Welke practice?
The practice location on file with NPPES is in Charlotte, NC. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-15.