Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Steven C Zimmerman, PH.D.
Family Psychologist in Abingdon, MD · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1164575551
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Registry record
Entity type Individual (Type 1)
Name Dr. Steven C Zimmerman
Credential PH.D.
Sex Male
Practice address 3105 Emmorton Rd, Abingdon, MD, 21009
Phone (410) 569-5900
Fax (410) 569-7751
Enumeration date Jan 19, 2007
Last updated in NPPES Sep 11, 2025
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 01971 (MD) Secondary
103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License 01971 (MD) Primary
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
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 Steven Zimmerman?
Steven Zimmerman is registered in NPPES with the primary taxonomy of Family Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.