Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Barbara Wishart Derr, R.D., L.D.
Registered Dietitian in Berlin, MD · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1285617811
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Registry record
Entity type Individual (Type 1)
Name Barbara Wishart Derr
Credential R.D., L.D.
Sex Female
Practice address 9733 Healthway Dr, Berlin, MD, 21811
Phone (410) 641-9773
Enumeration date Nov 29, 2005
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License DX2456 (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
Is NPI 1285617811 active?
Yes, as of the latest NPPES snapshot, NPI 1285617811 is active (record last updated 2007-07-08).
How do I verify Barbara Derr's NPI record?
Cross-check NPI 1285617811 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Tidalhealth Atlantic, Inc General Acute Care Hospital · Berlin, MD NPI 1053309120 John Gillespie Family Medicine Physician · Berlin, MD NPI 1013998202 Darlene Jameson Registered Dietitian · Berlin, MD NPI 1578546198 Susan Andrews Pulmonary Disease Physician · Berlin, MD NPI 1295786184 Razaak Eniola Internal Medicine Physician · Berlin, MD NPI 1518902014 Atif Zeeshan Pulmonary Disease Physician · Berlin, MD NPI 1033154125 Andrea Baier MD Hospitalist Physician · Berlin, MD NPI 1427181593 Jennifer Hoffman Speech-Language Pathologist · Berlin, MD NPI 1447373188
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.