Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
James Robert Siemen, PHD
Psychologist in Chestertown, MD · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821276320
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Registry record
Entity type Individual (Type 1)
Name James Robert Siemen
Credential PHD
Sex Male
Practice address 300 Sheeler Road, Chestertown, MD, 21620
Phone (410) 778-6800
Fax (410) 778-7344
Enumeration date Feb 6, 2008
Last updated in NPPES Feb 6, 2008
Taxonomy & licenses
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD 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 James Siemen?
James Siemen is registered in NPPES with the primary taxonomy of Psychologist. 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-06.