OrganizationActive
Elizabeth Loudon, MD PA
NPI 1538386701 · Dermatology Physician · San Antonio, TX
Elizabeth Loudon, MD PA is a Dermatology Physician organization in San Antonio, TX (NPI 1538386701).
Provider details
- NPI number
- 1538386701
- Entity type
- Organization
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Gerard Calderon, Office Manager(210) 615-9494
- License
- J6161 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
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
7434 Louis Pasteur Dr
Suite 220
San Antonio, TX 78229-4538
Phone: (210) 615-9494
Fax: (210) 615-1514
Street-level locationGet directions
Mailing address
7434 Louis Pasteur Dr
San Antonio, TX 78229-4538
Registry dates
- Enumerated
- 2007-04-19
- Last updated
- 2020-08-22
Frequently asked questions
- What is Elizabeth Loudon, MD PA's NPI number?
- Elizabeth Loudon, MD PA's National Provider Identifier (NPI) is 1538386701, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Elizabeth Loudon, MD PA?
- Elizabeth Loudon, MD PA is classified in the NPPES registry as Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Elizabeth Loudon, MD PA located?
- Elizabeth Loudon, MD PA's practice location on file with NPPES is 7434 Louis Pasteur Dr, San Antonio, TX 78229-4538.
- What is Elizabeth Loudon, MD PA's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Loudon, MD PA is (210) 615-9494.
- Who is the authorized official for Elizabeth Loudon, MD PA?
- The authorized official listed on Elizabeth Loudon, MD PA's NPPES record is Gerard Calderon, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Elizabeth Loudon, MD PA's NPI active?
- Yes — Elizabeth Loudon, MD PA's NPI (1538386701) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.