Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Karen Elizabeth Hollis, RD,LDN,CDE
Registered Dietitian in Easton, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649296435
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Registry record
Entity type Individual (Type 1)
Name Mrs. Karen Elizabeth Hollis
Credential RD,LDN,CDE
Sex Female
Practice address 219 S Washington St, Center for Diabetes and Endocrinology, Easton, MD, 21601
Phone (410) 822-1000
Fax (410) 822-5117
Enumeration date Jul 14, 2006
Last updated in NPPES Aug 28, 2013
Taxonomy & licenses
133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License DO1177 (MD) Primary
RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration.
About the RD 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 Karen Hollis practice?
The practice location on file with NPPES is in Easton, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Karen Hollis?
The National Provider Identifier (NPI) for Karen Hollis is 1649296435, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Mark Downey Anesthesiology Physician · Easton, MD NPI 1013907450 Ona Kareiva Anesthesiology Physician · Easton, MD NPI 1225010267 John Snell Anesthesiology Physician · Easton, MD NPI 1194707166 John Mulflur Anesthesiology Physician · Easton, MD NPI 1780666768 Kathryn Meyer Anesthesiology Physician · Easton, MD NPI 1124000153 Kasinathan Shanmugam Anesthesiology Physician · Easton, MD NPI 1902889223 Robert Middleton Anesthesiology Physician · Easton, MD NPI 1326021403 David Smith Diagnostic Radiology Physician · Easton, MD NPI 1366414146
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-08-28.