William Edward Holloway, MD
Vascular & Interventional Radiology Physician · Saint Louis, MO
William Edward Holloway, MD is a vascular & interventional radiology physician with a practice address in Saint Louis, Missouri, and NPI 1649396334, issued on Mar 22, 2007. Check the license (Missouri 2004028836, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- William Edward Holloway
- Credential
- MD
- Primary taxonomy
- Vascular & Interventional Radiology Physician 2085R0204X
- License number
- 2004028836 MO
Self-reported in NPPES; status is on the state search - Practice location
- 226 N Boyle Ave Apt 2N, Saint Louis, MO 63108
- Phone
- (314) 535-3601
- Enumerated
- Mar 22, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090714000103); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest vascular & interventional radiology physician records → All 95 in Missouri → Look up another NPI →
Verify William Edward Holloway in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2004028836Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average vascular & interventional radiology physician in 2024
22 Medicare Part D claims, against an average of 75 among the 1,444 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Clopidogrel21 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Neuro Interventional And Diagnostic Associates, PCLake Lotawana, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Edward Holloway among 95 vascular & interventional radiology physician records in Missouri
William Edward Holloway, MD is one of 95 vascular & interventional radiology physician records with a practice address in Missouri. 89% 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 29% of them.
- NPI issued2007 · 29% of these records are older, 62% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2002 · median 2009 among the 75 with a school on file
- Record last updated2007 · 15% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0204X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular & Interventional Radiology Physician providers in Missouri
There are 95 vascular & interventional radiology physician records in Missouri.
All 95 in Missouri → Every provider in Saint Louis → Vascular & Interventional Radiology Physician nationwide →
The 8 vascular & interventional radiology physician records with the nearest ZIP codes
- Ahmed Abdelbaki, M.D.Saint Louis, MO 631101396152005
- Michael Darcy, MDSaint Louis, MO 631101700804341
- James Duncan, MDSaint Louis, MO 631101437176997
- Jennifer Gould, MDSaint Louis, MO 631101154347383
- Jerome Kao, M.D.Saint Louis, MO 631101306131974
- John Karageorgiou, MDSaint Louis, MO 631101861789778
- Pavan Kavali, MDSaint Louis, MO 631101609192277
- Naganathan Mani, MDSaint Louis, MO 631101841463650
Common questions
What is William Edward Holloway, MD's NPI number?
William Edward Holloway, MD's National Provider Identifier (NPI) is 1649396334, issued on Mar 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Edward Holloway, MD located?
The NPPES record lists a practice address at 226 N Boyle Ave Apt 2N, Saint Louis, MO, 63108. Phone: (314) 535-3601. Providers update this record themselves, so call before visiting.
How can I verify William Edward Holloway, MD's license?
NPPES lists Missouri license number 2004028836, 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 Edward Holloway, MD prescribe under Medicare Part D?
In 2024, William Edward Holloway, MD had 22 Medicare Part D claims; the average among vascular & interventional radiology physician prescribers was 75. Part D covers Medicare prescriptions only.
What is William Edward Holloway, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.