Thomas B. Day, M.d.,p.a.
NPI 1689727240 · Medical Specialty Clinic/Center · Windsor Mill, MD
Thomas B. Day, M.d.,p.a. is a Medical Specialty Clinic/Center organization in Windsor Mill, MD (NPI 1689727240).
Provider details
- NPI number
- 1689727240
- Entity type
- Organization
- Primary specialty
- Medical Specialty Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Thomas Day, President(410) 747-4711
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-18
- Last updated
- 2023-03-07
Frequently asked questions
- What is Thomas B. Day, M.d.,p.a.'s NPI number?
- Thomas B. Day, M.d.,p.a.'s National Provider Identifier (NPI) is 1689727240, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Thomas B. Day, M.d.,p.a.?
- Thomas B. Day, M.d.,p.a. is classified in the NPPES registry as Medical Specialty Clinic/Center (Ambulatory Health Care Facilities).
- Where is Thomas B. Day, M.d.,p.a. located?
- Thomas B. Day, M.d.,p.a.'s practice location on file with NPPES is 7001 Johnnycake Rd Ste 104, Windsor Mill, MD 21244-2419.
- What is Thomas B. Day, M.d.,p.a.'s phone number?
- The practice phone number listed in the NPPES registry for Thomas B. Day, M.d.,p.a. is (410) 747-4711.
- Who is the authorized official for Thomas B. Day, M.d.,p.a.?
- The authorized official listed on Thomas B. Day, M.d.,p.a.'s NPPES record is Thomas Day, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Thomas B. Day, M.d.,p.a.'s NPI active?
- Yes — Thomas B. Day, M.d.,p.a.'s NPI (1689727240) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.