Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Katherine Sahm, MD
Surgery Physician in Wilmington, DE · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649201849
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Registry record
Entity type Individual (Type 1)
Name Katherine Sahm
Credential MD
Sex Female
Practice address 1100 N Grant Ave, 2nd Floor, Wilmington, DE, 19805
Phone (302) 421-4100
Fax (302) 421-4100
Enumeration date Jul 5, 2006
Last updated in NPPES May 12, 2014
Taxonomy & licenses
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License DE-C1-0007575 (DE) 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.
Frequently asked questions
Where does Katherine Sahm practice?
The practice location on file with NPPES is in Wilmington, DE. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Katherine Sahm?
The National Provider Identifier (NPI) for Katherine Sahm is 1649201849, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Amanda Fichter Optometrist · Wilmington, DE NPI 1588660351 St. Francis Hospital Inc. Obstetrics & Gynecology Physician · Wilmington, DE NPI 1700885928 Waleed Shalaby Gynecologic Oncology Physician · Wilmington, DE NPI 1407969587 St Francis Hospital Inc Surgery Physician · Wilmington, DE NPI 1811210222
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-05-12.