NPPES file of Aug 9, 2026

William S. Ferguson, MD

Pediatric Hematology & Oncology Physician · Saint Louis, MO

William S. Ferguson, MD is a pediatric hematology & oncology physician with a practice address in Saint Louis, Missouri, and NPI 1538263140, issued on Sep 12, 2006. Check the license (Missouri 2004006664, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1538263140
Name
William S. Ferguson
Credential
MD
Primary taxonomy
Pediatric Hematology & Oncology Physician 2080P0207X
License number
2004006664 MO
Self-reported in NPPES; status is on the state search
Practice location
1465 S Grand Blvd, Saint Louis, MO 63104
Phone
(314) 577-5638
Enumerated
Sep 12, 2006
Record last updated
Jan 11, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(314) 268-4081
Medicare enrollment
Enrolled (PECOS I20040819000009); accepts Medicare assignment
Medical or professional school
New York University School Of Medicine, 1982
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.
Download card Updates feed

Also registered at 1465 S Grand Blvd

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

  1. Nabil Abboud, MDAnesthesiology Physician1386660504
  2. Elaf AbdelmagidPediatrics Physician1831077627
  3. Michel Adonis, M.D.Pediatrics Physician1497190854
  4. Attila Ahmad, MDPediatric Cardiology Physician1245842699
  5. Emily Ahmad, CPNP-PCPediatric Nurse Practitioner1871875104
  6. Muteen Ahmed, M.B.B.S.Student in an Organized Health Care Education/Training Program1437950466

Verify William S. Ferguson 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 2004006664
    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

The practice group's MIPS final score for 2023 (Medicare payment program): 81.6 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.

  1. Qualityout of 100 · 30% of the final score76.1
  2. Costout of 100 · 30%54.3
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $3,247.10

3 payments; by number, the most common kind was compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was Uswm, LLC. The 1,215 providers of this specialty with any payment received $7,404.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Ferguson$3,247.10
  2. Specialty average$7,404.07

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

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 S. Ferguson among 99 pediatric hematology & oncology physician records in Missouri

William S. Ferguson, MD is one of 99 pediatric hematology & oncology physician records with a practice address in Missouri. 59% 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 2% of them.

  • NPI issued2006 · 2% of these records are older, 73% newer
  • In a Medicare fileYes · 59% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated1982 · median 2010 among the 38 with a school on file
  • Record last updated2021 · 30% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0207X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Hematology & Oncology Physician providers in Missouri

There are 99 pediatric hematology & oncology physician records in Missouri.

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

  1. Deepika Bhatla, M.DSt Louis, MO 631041841417680
  2. Jen Yih Chu, MDSaint Louis, MO 631041528199304
  3. Lily Dolatshahi, MDSaint Louis, MO 631041477743607
  4. Gordon GaleSt Louis, MO 631041396849907
  5. Christopher Hugge, MDSt Louis, MO 631041235140328
  6. Shermini Saini, MDSaint Louis, MO 631041578752010
  7. Jorge Dipaola, MDSaint Louis, MO 631101740277409
  8. Robert Hayashi, MDSaint Louis, MO 631101386662062

Common questions

What is William S. Ferguson, MD's NPI number?

William S. Ferguson, MD's National Provider Identifier (NPI) is 1538263140, issued on Sep 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William S. Ferguson, MD located?

The NPPES record lists a practice address at 1465 S Grand Blvd, Saint Louis, MO, 63104. Phone: (314) 577-5638. Providers update this record themselves, so call before visiting.

How can I verify William S. Ferguson, MD's license?

NPPES lists Missouri license number 2004006664, 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.

What is William S. Ferguson, MD's MIPS final score?

The 2023 MIPS final score is 81.6 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.