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

Calvin L. Day, Jr , MD, PA

Organization Dermatology Physician · NPI 1861487167

Calvin L. Day, Jr , MD, PA provides Dermatology Physician services in San Antonio, Texas. Licensed in Texas. Registered with an NPI since 2005.

Licensed in
TX
In the registry since
2005
What do these letters mean?
PA — Professional association
A form of business registration, not a clinical qualification.

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Practice location Address checks out

7711 Louis Pasteur Dr Ste 104
San Antonio, TX 78229-3411 Not confirmed with CMS for 18 years — call before visiting
Phone: (210) 615-8345
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence G1883 (TX)

Record details

NPI number1861487167
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Calvin Day — President · (210) 615-8345
NPI enumeratedSeptember 13, 2005
Last updated in NPPESFebruary 19, 2008
Mailing address7711 Louis Pasteur Dr Suite 104, San Antonio, TX 78229-3411

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