Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ellen Marie Whitaker, M.D.
Specialist in Washington, DC · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1104803329
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Registry record
Entity type Individual (Type 1)
Name Ellen Marie Whitaker
Credential M.D.
Sex Female
Practice address 106 Irving St Nw, Suite 4400 North, Washington, DC, 20010
Phone (202) 877-6935
Fax (202) 829-3190
Enumeration date Dec 29, 2005
Last updated in NPPES Mar 15, 2012
Taxonomy & licenses
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
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.
What specialty is Ellen Whitaker?
Ellen Whitaker is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-15.