Michael Stephen Williams, M.D.
Vascular Surgery Physician · Saint Louis, MO
Michael Stephen Williams, M.D. is a vascular surgery physician with a practice address in Saint Louis, Missouri, and NPI 1750544011, issued on Jul 8, 2008. Check the license (Missouri 2008016771, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Michael Stephen Williams
- Credential
- M.D.
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License number
- 2008016771 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1225 S Grand Blvd Dept OF, Saint Louis, MO 63104
- Phone
- (314) 977-4730
- Enumerated
- Jul 8, 2008
- Record last updated
- Mar 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (314) 977-1642
- Medicare enrollment
- Enrolled (PECOS I20150717002548); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 101 in Missouri → Look up another NPI →
Also registered at 1225 S Grand Blvd Dept OF
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joshua Hentzelman, M.D.Otolaryngology Physician1588865091
Verify Michael Stephen Williams 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 2008016771Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average vascular surgery physician in 2024
130 Medicare Part D claims for 41 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Atorvastatin Calcium27 claims
- Cilostazol24 claims
- Clopidogrel19 claims
- Gabapentin18 claims
- Eliquis16 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.
Industry payments in 2024: $147.61
6 payments; by number, the most common kind was food and beverage; the largest payer was Idorsia Pharmaceuticals US Inc. The 4,059 providers of this specialty with any payment received $6,178.00 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
- 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).
Michael Stephen Williams among 101 vascular surgery physician records in Missouri
Michael Stephen Williams, M.D. is one of 101 vascular 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 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 41% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2008 · median 2005 among the 75 with a school on file
- Record last updated2021 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular Surgery Physician providers in Missouri
There are 101 vascular surgery physician records in Missouri.
All 101 in Missouri → Every provider in Saint Louis → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- Justin D'Addario, MDSaint Louis, MO 631041477059772
- David Ebertz, MDSaint Louis, MO 631041497215818
- Khanjan Nagarsheth, MDSaint Louis, MO 631041275789430
- Pavitra Ravishankar, MDSaint Louis, MO 631041669121448
- Matthew Smeds, MDSaint Louis, MO 631041003067240
- Brianna Whithorn, DOSaint Louis, MO 631041568923332
- Catherine Wittgen, MDSaint Louis, MO 631041184728305
- Katherine Holzem, MDSaint Louis, MO 631061861912529
Common questions
What is Michael Stephen Williams, M.D.'s NPI number?
Michael Stephen Williams, M.D.'s National Provider Identifier (NPI) is 1750544011, issued on Jul 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Michael Stephen Williams, M.D. located?
The NPPES record lists a practice address at 1225 S Grand Blvd Dept OF, Saint Louis, MO, 63104. Phone: (314) 977-4730. Providers update this record themselves, so call before visiting.
How can I verify Michael Stephen Williams, M.D.'s license?
NPPES lists Missouri license number 2008016771, 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 Michael Stephen Williams, M.D. prescribe under Medicare Part D?
In 2024, Michael Stephen Williams, M.D. had 130 Medicare Part D claims for 41 beneficiaries; the average among vascular surgery physician prescribers was 201. 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.
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.