William T. Marshall, DO
Surgical Critical Care Physician · Valhalla, NY
William T. Marshall, DO is a surgical critical care physician with a practice address in Valhalla, New York, and NPI 1174533061, issued on Aug 9, 2006. Check the license (New York 296662, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William T. Marshall
- Credential
- DO
- Primary taxonomy
- Surgical Critical Care Physician 2086S0102X
- License numbers
- 296662 NY
044420 CT
Self-reported in NPPES; status is on the state search - Practice location
- 100 Woods RD # A, Valhalla, NY 10595
- Phone
- (914) 493-7000
- Enumerated
- Aug 9, 2006
- Record last updated
- Jan 24, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20060824000330); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 1999
- Entity
- Type 1 · individual
8 nearest surgical critical care physician records → All 151 in New York → Look up another NPI →
Also registered at 100 Woods RD # A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fawaz Al-Mufti, MDNeurology Physician1376776153
- Sana Ali, M.D.Neuroradiology Physician1619268448
- Christeena ForteVascular Neurology Physician1548655889
- Ryan Malcom, MDSurgical Critical Care Physician1992898217
- Carrie Muh, M.D., M.S.Neurological Surgery Physician1558548719
- Luis Munoz, PHYSICIAN ASSISTANTSurgical Physician Assistant1487019279
Verify William T. Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 296662Check 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% fewer Medicare Part D claims than the average surgical critical care physician in 2024
61 Medicare Part D claims for 53 beneficiaries, against an average of 64 among the 606 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Peg 3350-Electrolyte34 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: $2,394.80
23 payments; by number, the most common kind was food and beverage; the largest payer was Smith+Nephew, Inc. The 1,092 providers of this specialty with any payment received $2,183.62 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
- Bristol Hospital Multi Specialty Group, Inc.Bristol, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William T. Marshall among 151 surgical critical care physician records in New York
William T. Marshall, DO is one of 151 surgical critical care physician records with a practice address in New York. 83% 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, 64% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1999 · median 2009 among the 117 with a school on file
- Record last updated2019 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0102X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Critical Care Physician providers in New York
There are 151 surgical critical care physician records in New York.
All 151 in New York → Every provider in Valhalla → Surgical Critical Care Physician nationwide →
The 8 surgical critical care physician records with the nearest ZIP codes
- Vincent Blood, M.D.Valhalla, NY 105951508111667
- Matthew Bronstein, M.D.Valhalla, NY 105951386058394
- Jordan Kirsch, DOValhalla, NY 105951376920538
- Joshua Klein, D.O.Valhalla, NY 105951497190375
- Gary Lombardo, MDValhalla, NY 105951023174471
- Jacob LowryValhalla, NY 105951568966398
- Ryan Malcom, MDValhalla, NY 105951992898217
- Christian Moya, M.D.Valhalla, NY 105951417260845
Common questions
What is William T. Marshall, DO's NPI number?
William T. Marshall, DO's National Provider Identifier (NPI) is 1174533061, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William T. Marshall, DO located?
The NPPES record lists a practice address at 100 Woods RD # A, Valhalla, NY, 10595. Phone: (914) 493-7000. Providers update this record themselves, so call before visiting.
How can I verify William T. Marshall, DO's license?
NPPES lists New York license number 296662, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William T. Marshall, DO prescribe under Medicare Part D?
In 2024, William T. Marshall, DO had 61 Medicare Part D claims for 53 beneficiaries; the average among surgical critical care physician prescribers was 64. 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.