Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William Geiger III, PHD
Psychologist in Baltimore, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750316840
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Registry record
Entity type Individual (Type 1)
Name Dr. William Geiger III
Credential PHD
Sex Male
Practice address 6310 Harford Rd, Baltimore, MD, 21214
Phone (410) 426-6370
Fax (410) 426-3491
Enumeration date Jul 11, 2006
Last updated in NPPES Jul 8, 2007
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 is the NPI number for William Geiger?
The National Provider Identifier (NPI) for William Geiger is 1750316840, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Geiger practice?
The practice location on file with NPPES is in Baltimore, MD. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Robert Benedek Clinical Psychologist · Baltimore, MD NPI 1629003710 Ronald Heaton Clinical Psychologist · Baltimore, MD NPI 1538194626 David Michelson Psychologist · Baltimore, MD NPI 1487689576 June Peterson Clinical Social Worker · Baltimore, MD NPI 1043245137 James Meredith Psychologist · Baltimore, MD NPI 1093738262 Anne Gibson Clinical Social Worker · Baltimore, MD NPI 1417180696 Nicole Mcgill Clinical Social Worker · Baltimore, MD NPI 1881588556
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.