NPPES file of Aug 9, 2026

William John Moriconi, M.D.

Medical Oncology Physician · Saint Louis, MO

William John Moriconi, M.D. is a medical oncology physician with a practice address in Saint Louis, Missouri, and NPI 1952379224, issued on Mar 10, 2006. Check the license (Missouri RIB83, 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
1952379224
Name
William John Moriconi
Credential
M.D.
Primary taxonomy
Medical Oncology Physician 207RX0202X
License number
RIB83 MO
Self-reported in NPPES; status is on the state search
Practice location
12700 Southfork RD, Saint Louis, MO 63128
Phone
(314) 842-6472
Enumerated
Mar 10, 2006
Record last updated
Apr 1, 2025
Fax
(314) 842-5921
Medicaid ID
201373925 MO
Medicare enrollment
Enrolled (PECOS I20060124000524); accepts Medicare assignment
Medical or professional school
University Of Kansas School Of Med (Kc/Wich/Sal), 1979
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 medical oncology physician records → All 156 in Missouri → Look up another NPI →

Also registered at 12700 Southfork RD

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

  1. Iqbal Amin, M.D.Geriatric Medicine (Internal Medicine) Physician1184619835
  2. Stephen Benz, M.D.Orthopaedic Surgery Physician1952354706
  3. Nancy Birner, MDPediatrics Physician1043214778
  4. James Brennan, M.D.Obstetrics & Gynecology Physician1699714360
  5. Richard Brennan, M.D.Obstetrics & Gynecology Physician1316986540
  6. David Fagan, M.D.Orthopaedic Surgery Physician1952354763

Verify William John Moriconi 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 RIB83    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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3% fewer Medicare Part D claims than the average medical oncology physician in 2024

684 Medicare Part D claims for 112 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 37 claims were for opioids.

  1. William Moriconi684
  2. Specialty average703

Most prescribed

  1. Hydroxyurea101 claims
  2. Anastrozole71 claims
  3. Prednisone63 claims
  4. Anagrelide Hcl53 claims
  5. Imatinib Mesylate35 claims
  6. Acyclovir30 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. Ssm Health Care GroupSaint Louis, MO

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

William John Moriconi among 156 medical oncology physician records in Missouri

William John Moriconi, M.D. 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 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 61% newer
  • In a Medicare fileYes · 92% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated1979 · median 2003 among the 127 with a school on file
  • Record last updated2025 · 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

  1. Stephen Allen, M.D.Saint Louis, MO 631281912999160
  2. Craig Hildreth, M.D.Saint Louis, MO 631281851393136
  3. Amy Cyr, MDSaint Louis, MO 631291528181997
  4. Charles Kaufman, MDSaint Louis, MO 631291003953613
  5. Bruce Roth, MDSaint Louis, MO 631291740496660
  6. Belal Firwana, M.D.Saint Louis, MO 631311639424211
  7. Dilan Patel, MDSaint Louis, MO 631361356757736
  8. Somasekhar Bandi, M.D.Saint Louis, MO 631411922034321

Common questions

What is William John Moriconi, M.D.'s NPI number?

William John Moriconi, M.D.'s National Provider Identifier (NPI) is 1952379224, issued on Mar 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William John Moriconi, M.D. located?

The NPPES record lists a practice address at 12700 Southfork RD, Saint Louis, MO, 63128. Phone: (314) 842-6472. Providers update this record themselves, so call before visiting.

How can I verify William John Moriconi, M.D.'s license?

NPPES lists Missouri license number RIB83, 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 William John Moriconi, M.D. prescribe under Medicare Part D?

In 2024, William John Moriconi, M.D. had 684 Medicare Part D claims for 112 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.

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.