William Cavanaugh Chapman, MD
Transplant Surgery Physician · Saint Louis, MO
William Cavanaugh Chapman, MD is a transplant surgery physician with a practice address in Saint Louis, Missouri, and NPI 1790703270, issued on Jul 17, 2006. Check the license (Missouri 2002007882, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Cavanaugh Chapman
- Credential
- MD
- Primary taxonomy
- Transplant Surgery Physician 204F00000X
- License number
- 2002007882 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4921 Parkview PL, Saint Louis, MO 63110
- Phone
- (314) 747-9889
- Enumerated
- Jul 17, 2006
- Record last updated
- Apr 15, 2025
- Fax
- (314) 361-4197
- Medicaid ID
- 206660516 MO
- Medicare enrollment
- Enrolled (PECOS I20081104000476); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest transplant surgery physician records → All 16 in Missouri → Look up another NPI →
Also registered at 4921 Parkview PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Muyibat Adelani, MDAdult Reconstructive Orthopaedic Surgery Physician1396908042
- Foluso Ademuyiwa, MDMedical Oncology Physician1083875538
- Syed Adil, MDAdult Reconstructive Orthopaedic Surgery Physician1467942953
- Homaa Ahmad, MDCardiovascular Disease Physician1477635092
Verify William Cavanaugh Chapman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2002007882Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.3 times the Medicare Part D claims of the average transplant surgery physician in 2024
1,368 Medicare Part D claims for 134 beneficiaries, against an average of 260 among the 541 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Sulfamethoxazole-Trimethoprim265 claims
- Pantoprazole Sodium159 claims
- Valganciclovir Hcl123 claims
- Entecavir92 claims
- Famotidine55 claims
- Prednisone50 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): 79.3 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).
Industry payments in 2024: $65.67
2 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 524 providers of this specialty with any payment received $3,913.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Cavanaugh Chapman among 16 transplant surgery physician records in Missouri
William Cavanaugh Chapman, MD is one of 16 transplant surgery physician records with a practice address in Missouri. 88% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 44% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1984 · median 2001 among the 12 with a school on file
- Record last updated2025 · 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 204F00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Transplant Surgery Physician providers in Missouri
There are 16 transplant surgery physician records in Missouri.
All 16 in Missouri → Every provider in Saint Louis → Transplant Surgery Physician nationwide →
The 8 transplant surgery physician records with the nearest ZIP codes
- Jesse Davidson, MDSaint Louis, MO 631101881009835
- Martin Jendrisak, MDSaint Louis, MO 631101942226253
- Brendan Lovasik, MDSaint Louis, MO 631101538522990
- Surendra Shenoy, MDSaint Louis, MO 631101972521490
- Harvey Solomon, MDSaint Louis, MO 631101184727372
- Jason Wellen, MDSaint Louis, MO 631101134331382
- Mustafa Nazzal, M.D., MLS, FACSSaint Louis, MO 631041952558926
- Paul Garvin, MDSaint Louis, MO 631281407950017
Common questions
What is William Cavanaugh Chapman, MD's NPI number?
William Cavanaugh Chapman, MD's National Provider Identifier (NPI) is 1790703270, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Cavanaugh Chapman, MD located?
The NPPES record lists a practice address at 4921 Parkview PL, Saint Louis, MO, 63110. Phone: (314) 747-9889. Providers update this record themselves, so call before visiting.
How can I verify William Cavanaugh Chapman, MD's license?
NPPES lists Missouri license number 2002007882, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does William Cavanaugh Chapman, MD prescribe under Medicare Part D?
In 2024, William Cavanaugh Chapman, MD had 1,368 Medicare Part D claims for 134 beneficiaries; the average among transplant surgery physician prescribers was 260. Part D covers Medicare prescriptions only.
What is William Cavanaugh Chapman, MD's MIPS final score?
The 2023 MIPS final score is 79.3 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.