Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Sistrunk, RD
Registered Dietitian in Waldorf, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811083884
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mary Sistrunk
Credential RD
Sex Female
Practice address 3510 Old Washington Rd, Suite #100, Waldorf, MD, 20602
Phone (301) 609-5200
Fax (301) 609-5220
Enumeration date Oct 5, 2006
Last updated in NPPES Apr 28, 2008
Taxonomy & licenses
133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License D01770 (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
What specialty is Mary Sistrunk?
Mary Sistrunk is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Joel Sewchand Specialist · Waldorf, MD NPI 1528065653 Rita Grover Specialist · Waldorf, MD NPI 1255320529 Heart Center of Southern Maryland, L.L.P. Cardiovascular Disease Physician · Waldorf, MD NPI 1669451175 The Waldorf Endoscopy Asc, LLC Ambulatory Surgical Clinic/Center · Waldorf, MD NPI 1003889379 Christina Neal Medical Physician Assistant · Waldorf, MD NPI 1750320990 Bio-Medical Applications of Maryland, Inc. End-Stage Renal Disease (ESRD) Treatment Clinic/Center · Waldorf, MD NPI 1154425924 Betty Siu Internal Medicine Physician · Waldorf, MD NPI 1073609038 Civista Partners Ambulatory Surgery Center Ambulatory Surgical Clinic/Center · Waldorf, MD NPI 1902984321
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-28.