NPPES file of Aug 9, 2026

Thomas H. Fong, M.D.

Hematology & Oncology Physician · Saint Louis, MO

Thomas H. Fong, M.D. is a hematology & oncology physician with a practice address in Saint Louis, Missouri, and NPI 1790812642, issued on Feb 27, 2007. Check the license (Missouri 2004012109, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; 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
1790812642
Name
Thomas H. Fong
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
2004012109 MO
Self-reported in NPPES; status is on the state search
Practice location
660 S Euclid Ave, Saint Louis, MO 63110
Phone
(314) 747-8479
Enumerated
Feb 27, 2007
Record last updated
Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20081017000168); accepts Medicare assignment
Medical or professional school
Washington University School Of Medicine, 2001
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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8 nearest hematology & oncology physician records → All 237 in Missouri → Look up another NPI →

Also registered at 660 S Euclid Ave

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

  1. Brooj Abro, MDHematology (Pathology) Physician1205312972
  2. Benjamin AdamsStudent in an Organized Health Care Education/Training Program1275320285
  3. Loren AdlerStudent in an Organized Health Care Education/Training Program1134988488
  4. Garima Agrawal, M.D.Nuclear Medicine Physician1104132331
  5. Kelly Ahern, MDPsychiatry Physician1740178177
  6. Mueed Ahmad, M.D.Otolaryngology Physician1841329661

Verify Thomas H. Fong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 2004012109    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 Missouri 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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86% more Medicare Part D claims than the average hematology & oncology physician in 2024

1,631 Medicare Part D claims for 326 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 29 claims were for opioids.

  1. Thomas Fong1,631
  2. Specialty average877

Most prescribed

  1. Anastrozole244 claims
  2. Prednisone121 claims
  3. Dexamethasone107 claims
  4. Abiraterone Acetate102 claims
  5. Ondansetron Odt98 claims
  6. Lenalidomide74 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. Southern California Permanente Medical GroupFontana, CA

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

Thomas H. Fong among 237 hematology & oncology physician records in Missouri

Thomas H. Fong, M.D. is one of 237 hematology & oncology physician records with a practice address in Missouri. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.

  • NPI issued2007 · 44% of these records are older, 40% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2001 · median 2003 among the 168 with a school on file
  • Record last updated2021 · 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 207RH0003X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Missouri

There are 237 hematology & oncology physician records in Missouri.

All 237 in Missouri → Every provider in Saint Louis → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Mark Fesler, MDSaint Louis, MO 631101235204066
  2. Sagun Goyal, M.D.St Louis, MO 631101316032741
  3. Barbra Horn, M.D.Saint Louis, MO 631101295738961
  4. Bassel Jallad, MBBSSaint Louis, MO 631101124282306
  5. Gerald Linette, MDSaint Louis, MO 631101114943420
  6. Mudresh Mehta, MDSaint Louis, MO 631101982932083
  7. Steven Pincus, MDSaint Louis, MO 631101063420933
  8. Hans Reimers, MDSaint Louis, MO 631101770591653

Common questions

What is Thomas H. Fong, M.D.'s NPI number?

Thomas H. Fong, M.D.'s National Provider Identifier (NPI) is 1790812642, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Thomas H. Fong, M.D. located?

The NPPES record lists a practice address at 660 S Euclid Ave, Saint Louis, MO, 63110. Phone: (314) 747-8479. Providers update this record themselves, so call before visiting.

How can I verify Thomas H. Fong, M.D.'s license?

NPPES lists Missouri license number 2004012109, as entered by the provider. 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 Thomas H. Fong, M.D. prescribe under Medicare Part D?

In 2024, Thomas H. Fong, M.D. had 1,631 Medicare Part D claims for 326 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.