William J. Stewart, M.D.
Anesthesiology Physician · Delaware, OH
William J. Stewart, M.D. is an anesthesiology physician with a practice address in Delaware, Ohio, and NPI 1538107313, issued on Jun 3, 2006. Check the license (Ohio 35046238S, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- William J. Stewart
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 35046238S OH
Self-reported in NPPES; status is on the state search - Practice location
- 561 W Central Ave, Delaware, OH 43015
- Phone
- (740) 615-1000
- Enumerated
- Jun 3, 2006
- Record last updated
- May 2, 2023
- Medicaid ID
- 0543559 OH
- Medicare enrollment
- Enrolled (PECOS I20101012000169); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 2,068 in Ohio → Look up another NPI →
Also registered at 561 W Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Misty Arnold, MDEmergency Medicine Physician1366406696
- David Ashman, RD, LDRegistered Dietitian1871850958
- Gwynn Barnes, PTOrthopedic Physical Therapist1689157596
- Richard Belch, M.D.Anesthesiology Physician1396755906
- Erica BorstelmanPhysical Therapist1457834103
- Margaret Cook, RPHPharmacist1669820015
Verify William J. Stewart in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35046238SCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 83 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).
Bills Medicare through 2 group practices
- Midwest Physician Anesthesia Services, Inc.Columbus, OH
- Ohiohealth CorporationDelaware, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William J. Stewart among 2,068 anesthesiology physician records in Ohio
William J. Stewart, M.D. is one of 2,068 anesthesiology physician records with a practice address in Ohio. 74% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 51% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1980 · median 2005 among the 1,382 with a school on file
- Record last updated2023 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in Ohio
There are 2,068 anesthesiology physician records in Ohio.
All 2,068 in Ohio → Every provider in Delaware → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Richard Belch, M.D.Delaware, OH 430151396755906
- Shawn CuevasDelaware, OH 430151700279171
- Nicolay Kazimirko, M.D.Delaware, OH 430151881697142
- Samar Singh, DODelaware, OH 430151518168764
- Nestor Narcelles, M.D.Dublin, OH 430161508971961
- Azam Shah, D.O.Dublin, OH 430161659535045
- Matthew Treece, M.D.Dublin, OH 430161780808394
- Navin Goyal, M.D.Dublin, OH 430171346377090
Common questions
What is William J. Stewart, M.D.'s NPI number?
William J. Stewart, M.D.'s National Provider Identifier (NPI) is 1538107313, issued on Jun 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Stewart, M.D. located?
The NPPES record lists a practice address at 561 W Central Ave, Delaware, OH, 43015. Phone: (740) 615-1000. Providers update this record themselves, so call before visiting.
How can I verify William J. Stewart, M.D.'s license?
NPPES lists Ohio license number 35046238S, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is William J. Stewart, M.D.'s MIPS final score?
The 2023 MIPS final score is 83 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.