John Kouvaras, D.O.
Anesthesiology Physician · Newton, NJ
John Kouvaras, D.O. is an anesthesiology physician with a practice address in Newton, New Jersey, and NPI 1437194081, issued on Jun 18, 2006. Check the license (New Jersey 25MB07754400, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John Kouvaras
- Credential
- D.O.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 25MB07754400 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 175 High St, Newton, NJ 07860
- Phone
- (973) 383-2121
- Enumerated
- Jun 18, 2006
- Record last updated
- Jul 13, 2026
- Medicare enrollment
- Enrolled (PECOS I20060713000271); accepts Medicare assignment
- Medical or professional school
- University Of Nevada, Las Vegas School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,714 in New Jersey → Look up another NPI →
Also registered at 175 High St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Kouvaras in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MB07754400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Garden State Healthcare Associates LLCHoboken, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Kouvaras among 1,714 anesthesiology physician records in New Jersey
John Kouvaras, D.O. is one of 1,714 anesthesiology physician records with a practice address in New Jersey. 76% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 44% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2002 · median 2002 among the 1,178 with a school on file
- Record last updated2026 · 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 207L00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 anesthesiology physician records list a practice address in Newton
They are 12 of the 503 NPPES records with a practice address in Newton, and 1,714 anesthesiology physician records in New Jersey.
All 1,714 in New Jersey → Every provider in Newton → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Donald Delong, MDNewton, NJ 078601841261609
- Araz Ibragimov, DONewton, NJ 078601689883159
- Rongjie Jiang, M.DNewton, NJ 078601851527733
- Stephen Landauer, MDNewton, NJ 078601093747081
- Rebecca Martinez, D.O.Newton, NJ 078601629097340
- Nish Patel, MDNewton, NJ 078601750677993
- Marisa Petrucelli, D.O.Newton, NJ 078601043506637
- Sara Sedgwick-O'Donnell, MDNewton, NJ 078601285674069
Common questions
What is John Kouvaras, D.O.'s NPI number?
John Kouvaras, D.O.'s National Provider Identifier (NPI) is 1437194081, issued on Jun 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Kouvaras, D.O. located?
The NPPES record lists a practice address at 175 High St, Newton, NJ, 07860. Phone: (973) 383-2121. Providers update this record themselves, so call before visiting.
How can I verify John Kouvaras, D.O.'s license?
NPPES lists New Jersey license number 25MB07754400, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.