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

Dr. Calvin L Day Jr., MD

Individual provider Procedural Dermatology Physician · NPI 1831379692

Dr. Calvin L Day Jr., MD is a Dermatology in San Antonio, Texas. Graduated from University of Texas Southwestern Medical School at Dallas in 1976, 50 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
50
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
TX
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7979 Broadway Ste 202
San Antonio, TX 78209-2657
Phone: (210) 601-6502
Fax: (830) 885-6691
Show map & directions

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

Specialties & licences

MOHS-Micrographic Surgery Physician (primary) Taxonomy 207ND0101X · Licence G1883 (TX)
Procedural Dermatology Physician Taxonomy 207NS0135X · Licence G1883 (TX)

Record details

NPI number1831379692
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 9, 2007
Last updated in NPPESAugust 25, 2023
Certification dateAugust 25, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDERMATOLOGY
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 1976 (50 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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