NPPES file of Aug 9, 2026

William James Kelly, MD

Medical Oncology Physician · San Antonio, TX

William James Kelly, MD is a medical oncology physician with a practice address in San Antonio, Texas, and NPI 1720422421, issued on Apr 24, 2013. Check the license (Texas S7897, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720422421
Name
William James Kelly
Credential
MD
Primary taxonomy
Medical Oncology Physician 207RX0202X
License numbers
S7897 TX
BP10047120 TX
MD043981 DC
Self-reported in NPPES; status is on the state search
Practice location
7979 Wurzbach RD, San Antonio, TX 78229
Phone
(210) 450-1812
Enumerated
Apr 24, 2013
Record last updated
Dec 8, 2025
Medicare enrollment
Enrolled (PECOS I20200821001160); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 7979 Wurzbach RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Christina Agyin, APRN-BC FNPFamily Nurse Practitioner1386831386
  2. Brittany Altermatt, ANPAdult Health Nurse Practitioner1902939358
  3. Elise Alvarez, MS, GCGenetic Counselor (M.S.)1609691005
  4. Shammi Anholt, PTPhysical Therapist1821745712
  5. Athanassios Argiris, MDHematology & Oncology Physician1174608509
  6. Sukeshi Arora, MDMedical Oncology Physician1386805604

Verify William James Kelly in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license S7897
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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52% fewer Medicare Part D claims than the average medical oncology physician in 2024

337 Medicare Part D claims for 63 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D.

  1. William Kelly337
  2. Specialty average703

Most prescribed

  1. Levetiracetam42 claims
  2. Ondansetron Hcl33 claims
  3. Dexamethasone27 claims
  4. Tagrisso19 claims
  5. Pantoprazole Sodium18 claims
  6. Escitalopram Oxalate16 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.

Bills Medicare through one group practice

  1. University OF Texas Health Science Center AT San AntonioSan Antonio, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William James Kelly among 547 medical oncology physician records in Texas

William James Kelly, MD is one of 547 medical oncology physician records with a practice address in Texas. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 85% of them.

  • NPI issued2013 · 85% of these records are older, 13% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated2013 · median 2000 among the 414 with a school on file
  • Record last updated2025 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Oncology Physician providers in Texas

There are 547 medical oncology physician records in Texas.

The 8 medical oncology physician records with the nearest ZIP codes

  1. Muralidhar Beeram, M.D.San Antonio, TX 782291265426282
  2. Ronald Drengler, M.D.San Antonio, TX 782291265459168
  3. Virginia Kaklamani, MDSan Antonio, TX 782291841235439
  4. Anand Karnad, M.D.San Antonio, TX 782291023011624
  5. Amy Lang, M.D.San Antonio, TX 782291104850486
  6. Charles Lemaistre, M.D.San Antonio, TX 782291033176946
  7. Daruka Mahadevan, MD, PHDSan Antonio, TX 782291841398302
  8. Robert Marciniak, M.D.San Antonio, TX 782291700889201

Common questions

What is William James Kelly, MD's NPI number?

William James Kelly, MD's National Provider Identifier (NPI) is 1720422421, issued on Apr 24, 2013. An NPI identifies a provider in billing; it is not a license.

Where is William James Kelly, MD located?

The NPPES record lists a practice address at 7979 Wurzbach RD, San Antonio, TX, 78229. Phone: (210) 450-1812. Providers update this record themselves, so call before visiting.

How can I verify William James Kelly, MD's license?

NPPES lists Texas license number S7897, 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 William James Kelly, MD prescribe under Medicare Part D?

In 2024, William James Kelly, MD had 337 Medicare Part D claims for 63 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.

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.