DR. CATHERINE DAY
NPI 1699636720
Psychologist in Frederick, MD
About Dr. Catherine Day NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CATHERINE DAY (NPI 1699636720) is an individual psychologist in Frederick, Maryland, licensed in Maryland (A01225) and active in the NPI registry since November 2025. She maintains a secondary practice location in Rockville.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FREDERICK, MD 21701
FREDERICK, MD 21701
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Catherine Day's NPI number?
The NPI number for Catherine Day is 1699636720. It was assigned to this individual provider in the NPPES registry on November 19, 2025.
Where is Catherine Day located?
Catherine Day practices at 10 N Jefferson St Ste 203, Frederick, MD 21701. The listed phone number is (202) 750-1028.
What is Catherine Day's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
When was this NPI record last updated?
The NPPES record for Catherine Day was last updated on May 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.