Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. George Marshall Cowan III, PSY.D.
Clinical Psychologist in Jessup, MD · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1215283833
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Registry record
Entity type Individual (Type 1)
Name Dr. George Marshall Cowan III
Credential PSY.D.
Sex Male
Practice address 8450 Dorsey Run Rd, Jessup, MD, 20794
Phone (410) 724-3067
Enumeration date Aug 1, 2012
Last updated in NPPES Jun 29, 2026
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 04056 (MD) Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD 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 George Cowan?
George Cowan is registered in NPPES with the primary taxonomy of Clinical Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Marie Mackowick Psychiatric Pharmacist · Jessup, MD NPI 1275530081 Clifton T. Perkins Hospital Center Special Hospital · Jessup, MD NPI 1538151477 Lisa Sloat Forensic Psychiatry Physician · Jessup, MD NPI 1417942541 Danielle Robinson Psychiatry Physician · Jessup, MD NPI 1952397168 Kiumars Elyasi General Practice Dentistry · Jessup, MD NPI 1669468500 Syed Karim Geriatric Medicine (Internal Medicine) Physician · Jessup, MD NPI 1316934755 Pedro Coto Legal Medicine · Jessup, MD NPI 1629065800 Srirupa Ghoshtagore Psychiatry Physician · Jessup, MD NPI 1912994948
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-29.