Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William Stiers, PHD

Individual provider Clinical Neuropsychologist · NPI 1801826599

William Stiers, PHD is a Clinical Neuropsychologist in Baltimore, Maryland. Licensed in Maryland. Registered with an NPI since 2006.

Licensed in
MD
In the registry since
2006
Specialties on file
3
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

5601 Loch Raven Blvd
Baltimore, MD 21239-2905
Phone: (410) 532-4701
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence O4077 (MD)
Clinical Neuropsychologist Taxonomy 103G00000X · Licence 04077 (MD)
Rehabilitation Psychologist Taxonomy 103TR0400X · Licence 04077 (MD)

Record details

NPI number1801826599
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJuly 5, 2006
Last updated in NPPESJune 10, 2019

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients126
Services billed 308 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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