NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mary Preston Darby, PHARMD

Pharmacist in San Angelo, TX · enumerated 2019.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1205473030

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Mary Preston Darby
Credential PHARMD
Sex Female
Practice address San Angelo, TX, 76903
Fax (325) 747-2207
Enumeration date Nov 27, 2019
Last updated in NPPES Aug 7, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 24281111028 (MI) Secondary
183500000X Pharmacist Pharmacy Service Providers · License 230083 (AK) Secondary
1835P1200X Pharmacotherapy Pharmacist Pharmacy Service Providers · License 3159977 (TX) Secondary
183500000X Pharmacist Pharmacy Service Providers · License 53215 (TX) Primary
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mary Darby?
The National Provider Identifier (NPI) for Mary Darby is 1205473030, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Darby practice?
The practice location on file with NPPES is in San Angelo, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-07.