Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Katherine J Blake, PHD
Psychologist in Rockville, MD · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861511727
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Registry record
Entity type Individual (Type 1)
Name Katherine J Blake
Credential PHD
Sex Female
Practice address 3202 Tower Oaks Blvd, Suite 260, Rockville, MD, 20852
Phone (301) 528-8575
Enumeration date Mar 29, 2007
Last updated in NPPES Sep 26, 2014
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
Is NPI 1861511727 active?
Yes, as of the latest NPPES snapshot, NPI 1861511727 is active (record last updated 2014-09-26).
How do I verify Katherine Blake's NPI record?
Cross-check NPI 1861511727 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-26.