NPI age
20 years
Enumerated 2005-09-13
● Active Type 2 · Organization
Calvin L. Day, Jr., M.d., P.A.
Calvin L. Day, Jr., M.d., P.A. is 1 of 1632 dermatology organizations in Texas.
Primary specialty
Dermatology
Practice locations
1
0 secondary on file
Status
Active
No deactivations on record
Authorized official
Day
President
Last NPPES update
2008-02-19
Source: monthly bulk 2026-05
How this organization compares
Across 1632 active dermatology providers in Texas.
NPI age
20 years
↑ 4 yr above median
Practice locations
1
0 secondary on file
Subspecialties
0
NPI lifetime · 2005 → 2026
2005-09Enumerated in NPPES
2005
2026
Where they practice
Primary practice location
7711 Louis Pasteur Dr Suite 104
San Antonio, TX 782293411
Mailing address
7711 Louis Pasteur Dr Suite 104
San Antonio, TX 782293411
Authorized official
Calvin L. Day
President
📞 2106158345
Specialties
-
Dermatology PrimaryA dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The...
Practice context
Single-site organization. Only one practice location on file.
Provyx · Custom healthcare lists
Need all 1632 Dermatology providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
Request a quote →How to verify this organization
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Verify the organization is in good standing.Cross-check with the state's business registration and any applicable licensing boards.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.