Stephen Usala is an Endocrinology/Metabolic physician affiliated with Texas Tech University. OpenAlex indexes 52 publications with 2,762 citations (h-index 25).
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
1215 S Coulter St
Ste 405
Amarillo, TX 791061758
Telephone
806-358-8437Registry record last updated 19 Nov 2019.
Industry payments
1 company reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Dexcom, Inc.Program year20231 payment
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
Medicare prescribing footprint (2024)
The drugs this prescriber writes for Medicare patients, grouped by drug class and therapeutic area. Every percentage is a share of their total prescribing, so you can see what they prescribe most. These are proportions, not patient counts or dollar amounts. No condition is inferred: the claims record what was prescribed, never why.
Hormonal (systemic)
64.1%l-Thyroxine51.4%Levothyroxine Sodium100%Part D≥27 patientsThyroid Hormone Synthesis Inhibitor12.7%Methimazole100%Part D<11 patientsSensory organs
35.9%Corticosteroid35.9%Hydrocortisone100%Part D≥29 patients
Drug classes come from the WHO ATC and U.S. National Library of Medicine (RxClass) classifications; prescribing counts come from the CMS Medicare Part D Prescribers file. Each drug is counted once, under its primary class. Medicare fee-for-service only, so no Medicare Advantage, commercial, or pediatric prescribing is included. CMS publishes this data about 17 months after the fact.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
Similar KOLs
Other experts from the same institution or the same specialty.
Debabrata Mukherjee, MD
Texas Tech University
Kenneth Nugent, MD
Texas Tech University
Javier Corral, MD
Texas Tech University
Marc Zuckerman, MD
Texas Tech University
A basic profile from our physician directory: identity and practice contact from the federal NPPES registry, research from OpenAlex, trials from ClinicalTrials.gov, payments from CMS Open Payments — shown itemized where we have matched records, as a count where we only have a total. This person hasn't been through our full identity-adjudication pipeline yet, so funding, congress activity and public presence aren't shown. Absence of a section means “not yet looked,” never “none found.”