John R. Demais, MD
Anesthesiology Physician · Millburn, NJ
John R. Demais, MD is an anesthesiology physician with a practice address in Millburn, New Jersey, and NPI 1558320564, issued on Mar 20, 2006. Check the license (New Jersey 25MA40996, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John R. Demais
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 25MA40996 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 187 Millburn Avenue, Millburn, NJ 07041
- Phone
- (973) 467-1466
- Enumerated
- Mar 20, 2006
- Record last updated
- Dec 11, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (973) 467-1422
- Medicaid ID
- 183231 NJ
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,714 in New Jersey → Look up another NPI →
Also registered at 187 Millburn Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maureen Wilhelm, PTPhysical Therapist1679519466
Verify John R. Demais 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 25MA40996Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average anesthesiology physician in 2024
25 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D.
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.
John R. Demais among 1,714 anesthesiology physician records in New Jersey
John R. Demais, MD 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 fileNo · 69% of these records are
- Record last updated2009 · 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).
10 anesthesiology physician records list a practice address in Millburn
They are 10 of the 403 NPPES records with a practice address in Millburn, and 1,714 anesthesiology physician records in New Jersey.
All 1,714 in New Jersey → Every provider in Millburn → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Arnold Bodner, M.D.Millburn, NJ 070411174621866
- Pavithra Ellison, M.DMillburn, NJ 070411871620674
- Sumeet Goswami, MDMillburn, NJ 070411922198498
- Robert Levine, MDMillburn, NJ 070411801844998
- Steven Paganessi, M.D.Millburn, NJ 070411306944079
- Amul Patel, D.O.Millburn, NJ 070411013158047
- Valery Rivas Cuesta, MDMillburn, NJ 070411134570716
- Vickie Verea, MDMillburn, NJ 070411558505925
Common questions
What is John R. Demais, MD's NPI number?
John R. Demais, MD's National Provider Identifier (NPI) is 1558320564, issued on Mar 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John R. Demais, MD located?
The NPPES record lists a practice address at 187 Millburn Avenue, Millburn, NJ, 07041. Phone: (973) 467-1466. Providers update this record themselves, so call before visiting.
How can I verify John R. Demais, MD's license?
NPPES lists New Jersey license number 25MA40996, 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.
How much does John R. Demais, MD prescribe under Medicare Part D?
In 2024, John R. Demais, MD had 25 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. 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.