Stephen J. Usala, MD PHD
Endocrinology, Diabetes & Metabolism Physician · Amarillo, TX
Stephen J. Usala, MD PHD is an endocrinology, diabetes & metabolism physician with a practice address in Amarillo, Texas, and NPI 1992879563, issued on Nov 17, 2006. Check the license (Texas J9835, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Stephen J. Usala
- Credential
- MD PHD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- J9835 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1215 S Coulter St, Amarillo, TX 79106
- Phone
- (806) 358-8437
- Enumerated
- Nov 17, 2006
- Record last updated
- Nov 19, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 110634601 TX
- Medicare enrollment
- Enrolled (PECOS I20091125000536); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 743 in Texas → Look up another NPI →
Also registered at 1215 S Coulter St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Grace Archer, M.D.Obstetrics & Gynecology Physician1467523290
- Stephanie Archer, APRNFamily Nurse Practitioner1295489466
- Brandy Bahn, LVNLicensed Vocational Nurse1669781316
- Traci BighamLicensed Vocational Nurse1205144359
- Victor Bravo, M.D.Family Medicine Physician1528012044
- David Brister, M.D.Family Medicine Physician1568409589
Verify Stephen J. Usala in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J9835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
288 Medicare Part D claims for 68 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium129 claims
- Hydrocortisone90 claims
- Methimazole32 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Texas Tech University Health Sciences Center AmarilloAmarillo, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen J. Usala among 743 endocrinology, diabetes & metabolism physician records in Texas
Stephen J. Usala, MD PHD is one of 743 endocrinology, diabetes & metabolism physician records with a practice address in Texas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 61% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1982 · median 2004 among the 560 with a school on file
- Record last updated2019 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Texas
There are 743 endocrinology, diabetes & metabolism physician records in Texas.
All 743 in Texas → Every provider in Amarillo → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Cesar Arias, M.D.Amarillo, TX 791061942393871
- Debora Carrizo, M.D.Amarillo, TX 791061295819720
- Harold Werner, MDAmarillo, TX 791061467484667
- Susan Wingo, MDAmarillo, TX 791061457397697
- William Biggs, M.D.Amarillo, TX 791241033280862
- Kenny Brantley, M.D.Amarillo, TX 791241255408936
- Maria Cristina Caga-Anan, M.D.Amarillo, TX 791241992002778
- Margo GriffinTarpley, TX 788831346223005
Common questions
What is Stephen J. Usala, MD PHD's NPI number?
Stephen J. Usala, MD PHD's National Provider Identifier (NPI) is 1992879563, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen J. Usala, MD PHD located?
The NPPES record lists a practice address at 1215 S Coulter St, Amarillo, TX, 79106. Phone: (806) 358-8437. Providers update this record themselves, so call before visiting.
How can I verify Stephen J. Usala, MD PHD's license?
NPPES lists Texas license number J9835, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen J. Usala, MD PHD prescribe under Medicare Part D?
In 2024, Stephen J. Usala, MD PHD had 288 Medicare Part D claims for 68 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Stephen J. Usala, MD PHD's MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.