Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Thomas B. Day, MD, PA

Organization Medical Specialty Clinic/Center · NPI 1689727240

Thomas B. Day, MD, PA is a Medical Specialty Clinic/Center in Windsor Mill, Maryland. Registered with an NPI since 2007.

In the registry since
2007
What do these letters mean?
PA — Professional association
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

7001 Johnnycake Rd Ste 104
Windsor Mill, MD 21244-2419
Phone: (410) 747-4711
Fax: (410) 747-4766
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Specialty Clinic/Center (primary) Taxonomy 261QM2500X

Record details

NPI number1689727240
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Thomas Day — President · (410) 747-4711
NPI enumeratedJanuary 18, 2007
Last updated in NPPESMarch 7, 2023
Mailing addressPo Box 47756, Windsor Mill, MD 21244-0756