William Stewart Steinhardt, MD
Surgery Physician · Marrero, LA
William Stewart Steinhardt, MD is a surgery physician with a practice address in Marrero, Louisiana, and NPI 1811286610, issued on Apr 1, 2011. Check the license (Louisiana 206158, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Stewart Steinhardt
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 206158 LA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 Avenue G, Marrero, LA 70072
- Phone
- (504) 349-6713
- Enumerated
- Apr 1, 2011
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180413000167); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 2011
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 432 in Louisiana → Look up another NPI →
Also registered at 1200 Avenue G
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jayme Boudreaux, NPFamily Nurse Practitioner1598010589
- Robert Cummiskey, MDSurgery Physician1215985213
- Otholino Remedios, M.D.Pediatric Adolescent Medicine Physician1952486987
- Charles Thomas, M.D.Surgery Physician1326043084
Verify William Stewart Steinhardt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 206158Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average surgery physician in 2024
149 Medicare Part D claims for 81 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 49 claims were for opioids.
Most prescribed
- Pantoprazole Sodium34 claims
- Tramadol Hcl19 claims
- Hydrocodone-Acetaminophen18 claims
- Ondansetron Odt12 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: $39.74
1 payment: food and beverage; the largest payer was Medical Device Business Services, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Southern Surgical Specialists, LLCMarrero, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Stewart Steinhardt among 432 surgery physician records in Louisiana
William Stewart Steinhardt, MD is one of 432 surgery physician records with a practice address in Louisiana. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2011 · median 2004 among the 278 with a school on file
- Record last updated2018 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Louisiana
There are 432 surgery physician records in Louisiana.
All 432 in Louisiana → Every provider in Marrero → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Robert Cummiskey, MDMarrero, LA 700721215985213
- Frank Divincenti, M.D.Marrero, LA 700721508861642
- Peter Lundberg, M.D.Marrero, LA 700721619267952
- Vaughn Nossaman, M.D.Marrero, LA 700721114345931
- Charles Thomas, M.D.Marrero, LA 700721326043084
- David Treen, M.D.Marrero, LA 700721235152828
- Charles McGaff, MDLutcher, LA 700711730116716
- Jennifer Malsbury, D.O.La Place, LA 700681295984961
Common questions
What is William Stewart Steinhardt, MD's NPI number?
William Stewart Steinhardt, MD's National Provider Identifier (NPI) is 1811286610, issued on Apr 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is William Stewart Steinhardt, MD located?
The NPPES record lists a practice address at 1200 Avenue G, Marrero, LA, 70072. Phone: (504) 349-6713. Providers update this record themselves, so call before visiting.
How can I verify William Stewart Steinhardt, MD's license?
NPPES lists Louisiana license number 206158, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Stewart Steinhardt, MD prescribe under Medicare Part D?
In 2024, William Stewart Steinhardt, MD had 149 Medicare Part D claims for 81 beneficiaries; the average among surgery physician prescribers was 147. 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.