Theodore Seth Thomas, MD
Medical Oncology Physician · Saint Louis, MO
Theodore Seth Thomas, MD is a medical oncology physician with a practice address in Saint Louis, Missouri, and NPI 1326359837, issued on Jun 30, 2010. Check the license on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Theodore Seth Thomas
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 036166718 IL
Self-reported in NPPES; status is on the state search - Practice location
- 915 N Grand Blvd, Saint Louis, MO 63106
- Phone
- (314) 652-4100
- Enumerated
- Jun 30, 2010
- Record last updated
- Feb 3, 2026
- Medicaid ID
- 200008314 MO
- Medicare enrollment
- Enrolled (PECOS I20240105003998); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Columbia School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 156 in Missouri → Look up another NPI →
Also registered at 915 N Grand Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nagla Abdelmalek, M.D.Emergency Medicine Physician1003847591
- Stephanie AdamsRegistered Nurse1003755810
- Jessica Addai, RNRegistered Nurse1225475171
- Bernadette Addison-TannerCase Management Registered Nurse1750143566
- Oluwafunmilayo Adebayo-Adonis, MDCritical Care Medicine (Anesthesiology) Physician1437593613
- Oluwatoyin Adegboyega, FNPFamily Nurse Practitioner1932724614
Verify Theodore Seth Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing ArtsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average medical oncology physician in 2024
297 Medicare Part D claims for 57 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. 33 claims were for opioids.
Most prescribed
- Prochlorperazine Maleate52 claims
- Dexamethasone50 claims
- Ondansetron Hcl41 claims
- Oxycodone Hcl21 claims
- Prednisone21 claims
- Lidocaine-Prilocaine13 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 practice group's MIPS final score for 2023 (Medicare payment program): 92.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Washington University Physicians IN Illinois IncBelleville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theodore Seth Thomas among 156 medical oncology physician records in Missouri
Theodore Seth Thomas, MD is one of 156 medical oncology physician records with a practice address in Missouri. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 64% of them.
- NPI issued2010 · 64% of these records are older, 32% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2010 · median 2003 among the 127 with a school on file
- Record last updated2026 · 23% 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 Missouri 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 Missouri
There are 156 medical oncology physician records in Missouri.
All 156 in Missouri → Every provider in Saint Louis → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Giordano Cittolin Santos, MD PHDSaint Louis, MO 631061649767799
- Taneemul Haque, M.D.Saint Louis, MO 631061871521054
- Jesse Keller, MDSaint Louis, MO 631061174787162
- Eric Knoche, MDSaint Louis, MO 631061184834624
- Camille Abboud, MDSaint Louis, MO 631081316965320
- Douglas Adkins, MDSaint Louis, MO 631081164440616
- Amanda Cashen, MDSaint Louis, MO 631081215953534
- John Dipersio, MDSaint Louis, MO 631081730106295
Common questions
What is Theodore Seth Thomas, MD's NPI number?
Theodore Seth Thomas, MD's National Provider Identifier (NPI) is 1326359837, issued on Jun 30, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Theodore Seth Thomas, MD located?
The NPPES record lists a practice address at 915 N Grand Blvd, Saint Louis, MO, 63106. Phone: (314) 652-4100. Providers update this record themselves, so call before visiting.
How can I verify Theodore Seth Thomas, MD's license?
Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Theodore Seth Thomas, MD prescribe under Medicare Part D?
In 2024, Theodore Seth Thomas, MD had 297 Medicare Part D claims for 57 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Theodore Seth Thomas, MD's MIPS final score?
The 2023 MIPS final score is 92.4 of 100, reported for the practice group. 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.